12 CRR-NY 800.5NY-CRR
12 CRR-NY 800.5
12 CRR-NY 800.5
800.5 Possible exposure limits.
An employee's exposure to any substance listed in Table Z-1-A, Z-2, or Z-3 of this section shall be limited in accordance with the requirements of the following paragraphs of this section.
(a) Table Z-1-A.
(1) Substances in transitional limits columns with limits preceded by “ C”—ceiling values. An employee's exposure to any substance in Table Z-1-A under the transitional limits column, the exposure limit of which is preceded by a “C”, shall at no time exceed the exposure limit given for that material in Table Z-1-A under the transitional limits columns.
(2) Other substances in transitional limits columns—8-hour time weighted average. An employee's exposure to any substance in table Z-1-A under the transitional limits columns, the exposure limit of which is not preceded by a “C”, shall not exceed the 8-hour time weighted average given for that substance in table Z-1-A under the transitional limits columns in any 8-hour work shift of a 40-hour work week.
(3) Final rule limits columns. An employee's exposure to any substance listed in table Z-1-A shall not exceed the time weighted average (TWA), short term exposure limit (STEL), and ceiling limit specified for that substance in table Z-1-A under the final limits columns.
(4) Skin designation. To prevent or reduce skin absorption, an employee's skin exposure to substances listed in table Z-1-A with an “X” in one or both of the skin designation columns following the substance name shall be prevented or reduced to the extent necessary in the circumstances through the use of gloves, coveralls, goggles, or other appropriate personal protective equipment, engineering controls or work practices.
(5) Definitions. The following definitions are applicable to the final rule limits columns of table Z-1-A:
(i) Time weighted average (TWA) is the employee's average airborne exposure in any 8-hour work shift of a 40-hour work week which shall not be exceeded.
(ii) Short term exposure limit (STEL) is the employee's 15-minute time weighted average exposure which shall not be exceeded at any time during a work day unless another time limit is specified in a parenthetical notation below the limit. If another time period is specified, the time weighted average exposure over that time period shall not be exceeded at any time during the working day.
(iii) Ceiling is the employee's exposure which shall not be exceeded during any part of the work day. If instantaneous monitoring is not feasible, then the ceiling shall be assessed as a 15-minute time weighted average exposure which shall not be exceeded at any time over a working day.
(6) Additional definition. The terms substance, air contaminant,and material are equivalent in meaning for 29 CFR 1910.1000. (29 CFR 1910 was previously filed with the Secretary of State on February 2, 1988, under File Number 240. It is available for inspection at the NYS Department of State and the NYS Department of Labor, and can be obtained from the U.S. Government Printing Office in Federal Register, Volume 52, No. 176, pp. 34460-34578, September 11, 1987).
(b) Table Z-2. Table Z-2 is applicable for the transitional period and to the extent set forth in subdivision (f) of this section.
(1) Eight-hour time weighted averages. An employee's exposure to any material listed in table Z-2, in any 8-hour work shift of a 40-hour work week, shall not exceed the 8-hour time weighted average limit given for that material in table Z-2.
(2) Acceptable ceiling concentrations. An employee's exposure to a material listed in table Z-2 shall not exceed at any time during an 8-hour shift the acceptable ceiling concentration limit given for the material in the table, except for a time period, and up to a concentration not exceeding the maximum duration and concentration allowed in the column under “acceptable maximum peak above the acceptable ceiling concentration for an 8-hour shift”.
(3) Example. During an 8-hour work shift, an employee may be exposed to a concentration of Substance A (with a 10 ppm TWA, 25 ppm ceiling and 50 ppm peak) above 25 ppm (but never above 50 ppm) only for a maximum period of 10 minutes. Such exposure must be compensated by exposures to concentrations less than 10 ppm so that the cumulative exposure for the entire 8-hour work shift does not exceed a weighted average of 10 ppm.
(c) Table Z-3.
Table Z-3 is applicable for the transitional period and to the extent set forth in subdivision (f) of this section. An employee's exposure to any substance listed in table Z-3, in any 8-hour work shift of a 40-hour work week shall not exceed the 8-hour time weighted average limit given for that substance in the table.
(d) Computation formulae.
The computation formula which shall apply to employee exposure to more than one substance for which 8-hour time weighted averages are listed in subpart Z of 29 CFR part 1910 in order to determine whether an employee is exposed over the regulatory limit is as follows:
(1)
(i) The cumulative exposure for an 8-hour work shift shall be computed as follows:
(E = C(a) T(a) + C(b) T(b) + . . . . C(n) T(n)) divided by 8
Where:
E is the equivalent exposure for the working shift.
C is the concentration during any period of time T where the concentration remains constant.
T is the duration in hours of the exposure at the concentration C.
The value of E shall not exceed the 8-hour time weighted average specified in Subpart Z or 29 CFR part 1910 for the material involved.
(ii) To illustrate the formula prescribed in subparagraph (i) of this paragraph, assume that Substance A has an 8-hour time weighted average limit of 100 ppm noted in table Z-1-A. Assume than an employee is subject to the following exposure: Substituting this information in the formula, we have
Two hours exposure at 150 p/m
Two hours exposure at 75 p/m
Four hours exposure at 50 p/m
(2 × 150 + 2 × 75 + 4 × 50) divided by 8 = 81.25 p/m
Since 81.25 p.p.m. is less than 100 p.p.m., the 8-hour time weighted average limit, the exposure is acceptable.
(2)
(i) In case of a mixture of air contaminants an employer shall compute the equivalent exposure as follows:
E(m) = (C(1) divided by L(1) + C(2) divided by L(2)) + . . . (C)(n) divided by L(n))
Where:
E(m) is the equivalent exposure for the mixture.
C is the concentration of a particular contaminant.
L is the exposure limit for that substance specified in Subpart Z of 29 CFR part 1910.
The value of E(m) shall not exceed unity (1).
(ii) To illustrate the formula prescribed in subparagraph (d)(2)(i) of this section, consider the following exposures:
Substance | Actual concentration of 8-hour exposure (ppm) | 8 hr.TWA PEL (ppm) |
---|---|---|
B | 500 | 1,000 |
C | 45 | 200 |
D | 40 | 200 |
Substituting in the formula, we have: E(m) = 500 divided by 1,000 + 45 divided by 200 + 40 divided by 200 E(m) = 0.500 + 0.225 + 0.200 E(m) = 0.925
Since E(m) is less than unity (1), the exposure combination is within acceptable limits.
(e) To achieve compliance with subdivisions (a) through (d) of this section, administrative or engineering controls must first be determined and implemented whenever feasible. When such controls are not feasible to achieve full compliance, protective equipment or any other protective measures shall be used to keep the exposure of employees to air contaminants within the limits prescribed in this section. Any equipment and/or technical measures used for this purpose must be approved for each particular use by a competent industrial hygienist or other technically qualified person. Whenever respirators are used, their use shall comply with 1910.134.
(f) Effective dates, start-up dates and transitional provisions.
(1) Effective date. The effective date for the permissible exposure limits specified in the final rule limits columns of table Z-1-A is March 1, 1989.
(2)
(i) The permissible exposure limits specified in the final rule columns of table Z-1-A shall be achieved by any reasonable combination of engineering controls, work practices and personal protective equipment effective September 1, 1989, through December 30, 1992. (See note at end of table Z-1-A).
(ii)
(a) The permissible exposure limits specified in the final rule limits columns of table Z-1-A shall be achieved by the method of compliance specified in subdivision (e) of this section effective December 31, 1992, if by December 31, 1991, a final rule has been published in the Federal Register amending or determining not to amend subdivision (e) of this section.
(b) If no final rule has been published in the Federal Register by December 31, 1991, amending or determining not to amend subdivision (e) of this section, then the permissible limits specified in the final rule limits columns of table Z-1-A shall be achieved by the methods of compliance specified by subdivision (e) of this section effective December 31, 1993, and subparagraph (f)(2)(i) of this section shall remain in effect through December 30, 1993.
(iii) The skin designations in the final rule limits columns become effective September 1, 1989. The skin designations in the transitional limits columns are in effect from March 1, 1989, through August 31, 1989.
(3) Transitional provisions.
(i) The permissible exposure limits specified in the transitional limits columns of table Z-1-A, table Z-2 and table Z-3 shall continue to be achieved by the methods of compliance specified in subdivision (e) of this section through December 30, 1992. If clause (2)(ii)(b) of this subdivision takes effect, this provision is extended through December 30, 1993. The permissible exposure limits specified in tables Z-2 and Z-3 for substances mentioned in the final rule limits column of table Z-1-A only by cross reference to table Z-2 or Z-3 shall remain in effect indefinitely and continue to be achieved by the methods of compliance specified in subdivision (e) of this section.
(ii) The permissible exposure limits specified in the transitional limits columns of table Z-1-A, Z-2 and Z-3 shall be applicable to the extent cross referenced in 29 CFR parts 1915, 1917 and 1918.
(iii) If any new or amended provisions or new or revised limits for any substance or substances are either administratively stayed or judicially stayed or vacated, then the existing provisions or limits for those substances specified in the transitional limits columns of table Z-1-A, table Z-2 or table Z-3 shall remain in effect until such stay is lifted, or indefinitely, if the limit is vacated.
(4) Enforcement of the limits are indefinitely stayed for: aluminum alkyls; ethylidene norbornene; hexafluoracetone; mercury (alkyl compounds); oxygen difluoride; phenylphosphine; and sulfur pentafluoride; until OSHA publishes in the Federal Register a notice that a sampling and analytical technique is available.
TABLE Z-1-A. LIMITS FOR AIR CONTAMINANTS
NOTE: Footnotes specfic only to a limited number of substances are also shown within the table.
* The transitional PELs are 8-hour TWAs unless otherwise noted; a (C) designation denotes a celing limit.
** Unless otherwise noted, employers in General Industry (i.e., those covered by 29 CFR 1910) may use any combination of controls to achieve these limits until December 31, 1993 as set forth in 29 CFR 1910.1000(f).
*** As determined from breathing-zone air samples;
a Parts of vapor or gas per million parts of contaminated air by volume at 25 degrees C and 760 torr.
b Milligrams of substance per cubic meter of air. When a numerical entry for a substance is in the mg/m(3) column and not in the ppm column, then the number in the mg/m(3) is exact. When numerical entries for a substance are in both the ppm and mg/m(3) columns, then the number in the ppm column is exact and the number in the mg/m(3) column may be rounded off.
c Duration is for 15 minutes, unless otherwise noted.
d The final benzene standard in 1910.1028 applies to all occupational exposures to benzene except some subsegments of industry where exposures are consistently under the action level (i.e., distribution and sale of fuels, sealed containers and pipelines, coke production, oil and gas drilling and production, natural gas processing, and the percentage exclusion for liquid mixtures); for the excepted subsegment, the benzene limits in table Z-2 apply.
e Exposures under 10,000 ppm ato be cited de minimus.
f The CAS number is for information only. Enforcement is based on the substance name. For an entry covering more than one metal compound measured as the metal, the CAS number for the metal is given-not CAS numbers for the individual compounds.
g Compliance with the subtilisins PEL is assessed by sampling with a high volume sampler (600-800 liters per minute) for at least 60 minutes.
h The Acetone STEL does not apply to the cellulose acetate fiber industry. It is in effect for all other sectors.
i The final rule limit STEL of 5 mg/m(3) is not in effect as a result of reconsideration. Calcium hydroxide is covered by the exposure limits for particulates not otherwise regulated of 5 mg/m(3) respirable dust and 5 mg/m(3) total dust.
j The final rule limit TWA of 5 mg/m(3) is not in effect as a result of reconsideration. The calcium oxide transitional limit of 5 mg/m(3) remains in effect and employee exposures shall be kept below that level pursuant to the methods of compliance specified in CFR 1910.1000(e).
k The final rule limit STEL of 0.1 mg/m(3) is not in effect as a result of reconsideration for the industrial sector of civilian manufacture and distribution of explosives and propellants for civilian use. The final rule limits skin designation and the transitional limits ceiling limit of 1 mg/m(3) remain in effect for this sector until completion to the reconsideration.
l The final rule limit STEL of 0.1 mg/m(3) is not in effect as a result of reconsideration for the industrial sector of civilian manufacture and distribution of explosives and propellants for civilian use. The final rule limits skin designation and the transitional limits ceiling limit of 2 mg/m(3) remain in effect for this sector until completion of the reconsideration.
m Sampling for the carbon monoxide ceiling shall be averaged over 5 minutes but an instantaneous reading over 1500 ppm shall not be exceeded.
Acetaldehyde | CAS NO (f): 75-07-0 | |
Transitional Limits: | ||
PEL* | 200 ppm(a) | 360 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 100 ppm (a) | 180 mg/m(3)(b) |
STEL(c) | 150 ppm (a) | 270 mg/m(3)(b) |
CEILING | - | - |
Skin Designation | - | |
Acetetic acid | CAS NO(f): 64-19-7 | |
Transitional Limits: | ||
PEL* | 10 ppm (a) | 25 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 10 ppm (a) | 25 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Acetic anhydride | CAS NO(f): 108-24-7 | |
Transitional Limits: | ||
PEL* | 5 ppm(a) | 20 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | - |
STEL(c) | - | - |
CEILING | 5 ppm(a) | 20 mg/m(3)(b) |
Skin Designation | - | |
Acetone (h) | CAS NO(f):67-64-1 | |
Transitional Limits: | ||
PEL* | 1000 ppm(a) | 2400 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 750 ppm (a) | 1800 mg/m(3)(b) |
STEL(c) | 1000 ppm (a) (h) | 2400 mg/m(3)(b) (h) |
CEILING | - | - |
Skin Designation | - | |
Footnote (h) The Acetone STEL does not apply to the cellulose acetate fiber industry. It is in effect for all other sectors. | ||
Acetonitrile* | CAS NO(f):75-05-8 | |
Transitional Limits: | ||
PEL* | 40 ppm(a) | 70 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 40 ppm(a) | 70 mg/m(3)(b) |
STEL(c) | 60 ppm (a) | 105 mg/m(3)(b) |
CEILING | - | - |
Skin Designation | - | |
2-Acetylaminofluorine; | CAS NO(f): 53-96-3 | |
see 1910.1014 | ||
Acetylene dichloride; | ||
see 1, 1-Dichloroethylene | ||
Acetylene tetrabromide | CAS NO(f):79-27-6 | |
Transitional Limits: | ||
PEL* | 1 ppm (a) | 14 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 1 ppm(a) | 14 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Acetylsalicylic acid (Aspirin) | CAS NO(f):50-78-2 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 5 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Acrolein | CAS NO(f):107-02-8 | |
Transitional Limits: | ||
PEL* | 0.1 ppm(a) | 0.25 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 0.1 ppm(a) | 0.25 mg/m(3)(b) |
STEL(c) | 0.3 ppm(a) | 0.8 mg/m(3)(b) |
CEILING | - | - |
Skin Designation | - | |
Acrylamide | CAS NO(f):79-06-1 | |
Transitional Limits: | ||
PEL* | - | 0.3 mg/m(3)(b) |
Skin Designation | X | |
Final Rule Limits**: | ||
TWA | - | 0.03 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | X | |
Acrylic acid | CAS NO(f):79-10-7 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 10 ppm(a) | 30 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | X | |
Acrylonitrile; | CAS NO(f): 107-13-1 | |
see 1910.1045 | ||
Aldrin | CAS NO(f):309-00-2 | |
Transitional Limits: | ||
PEL* | - | 0.25 mg/m(3)(b) |
Skin Designation | X | |
Final Rule Limits**: | ||
TWA | - | 0.25 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | X | |
Allyl alcohol | CAS NO(f):107-18-6 | |
Transitional Limits: | ||
PEL* | 2 ppm(a) | 5 mg/m(3)(b) |
Skin Designation | X | |
Final Rule Limits**: | ||
TWA | 2 ppm(a) | 5 mg/m(3)(b) |
STEL(c) | 4 ppm(a) | 10 mg/m(3)(b) |
CEILING | - | - |
Skin Designation | X | |
Allyl chloride | CAS NO(f):107-05-1 | |
Transitional Limits: | ||
PEL* | 1 ppm(a) | 3 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 1 ppm(a) | 3 mg/m(3)(b) |
STEL(c) | 2 ppm(a) | 6 mg/m(3)(b) |
CEILING | - | - |
Skin Designation | - | |
Allyl glycidyl ether (AGE) | CAS NO(f):106-92-3 | |
Transitional Limits: | ||
PEL* | (C) 10 ppm(a) | (C) 45 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 5 ppm(a) | 22 mg/m(3)(b) |
STEL(c) | 10 ppm(a) | 44 mg/m(3)(b) |
CEILING | - | - |
Skin Designation | - | |
Footnote (C) denotes a ceiling limit. | ||
Allyl propyl disulfide | CAS NO(f):2179-59-1 | |
Transitional Limits: | ||
PEL* | 2 ppm(a) | 12 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 2 ppm(a) | 12 mg/m(3)(b) |
STEL(c) | 3 ppm(a) | 18 mg/m(3)(b) |
CEILING | - | - |
Skin Designation | - | |
alpha-Alumina | CAS NO(f):1344-28-1 | |
Total Dust | ||
Transitional Limits: | ||
PEL* | - | 15 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 10 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Respirable fraction | ||
Transitional Limits: | ||
PEL* | - | 5 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 5 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Aluminum (as Al) Metal | CAS NO (f): 7429-90-5 | |
Total Dust | ||
Transitional Limits: | ||
PEL* | - | 15 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 15 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Respirable fraction | ||
Transitional Limits: | ||
PEL* | - | 5 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 5 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Pyro Powders | ||
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 5 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Welding Fumes*** | ||
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 5 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Footnote*** As determined from breathing-zone air samples. | ||
Soluble Salts | ||
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 2 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Alkyls | ||
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 2 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
4-Aminodiphenyl; | CAS NO(f):92-67-1 | |
see 1910.1011 | ||
2-Aminoethanol; | ||
see Ethanolamine | ||
2-Aminopyridine | CAS NO(f):504-29-0 | |
Transitional Limits: | ||
PEL* | 0.5 ppm(a) | 2 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 0.5 ppm(a) | 2 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Amitrole | CAS NO(f):61-82-5 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 0.2 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Ammonia | CAS NO(f):7664-41-7 | |
Transitional Limits: | ||
PEL* | 50 ppm(a) | 35 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | - |
STEL(c) | 35 ppm(a) | 27 mg/m(3)(b) |
CEILING | - | - |
Skin Designation | - | |
Ammonium chloride fume | CAS NO(f):12125-02-9 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 10 mg/m(3)(b) |
STEL(c) | 20 mg/m(3)(b) | |
CEILING | - | - |
Skin Designation | - | |
Ammonium sulfamate | CAS NO(f):7773-06-0 | |
Total Dust | ||
Transitional Limits: | ||
PEL* | - | 15 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 10 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Respirable fraction | ||
Transitional Limits: | ||
PEL* | - | 5 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 5 mg/m(3)(b) |
STEL(c) | 20 mg/m(3)(b) | |
CEILING | - | - |
Skin Designation | - | |
n-Amyl acetate | CAS NO(f): 628-63-7 | |
Transitional Limits: | ||
PEL* | 100 ppm(a) | 525 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 100 ppm(a) | 525 mg/m(3)(b) |
STEL(c) | 20 mg/m(3)(b) | |
CEILING | - | - |
Skin Designation | - | |
sec-Amyl acetate | CAS NO(f): 626-38-0 | |
Transitional Limits: | ||
PEL* | 125 ppm(a) | 650 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 125 ppm(a) | 650 mg/m(3)(b) |
STEL(c) | 20 mg/m(3)(b) | |
CEILING | - | - |
Skin Designation | - | |
Aniline and homologs | CAS NO(f): 62-53-3 | |
Transitional Limits: | ||
PEL* | 5 ppm(a) | 19 mg/m(3)(b) |
Skin Designation | 2X | |
Final Rule Limits**: | ||
TWA | ppm(a) | 8 mg/m(3)(b) |
STEL(c) | 20 mg/m(3)(b) | |
CEILING | - | - |
Skin Designation | X | |
Anisidine (o-,p-isomers) | CAS NO(f):29191-52-4 | |
Transitional Limits: | ||
PEL* | 0.5 mg/m(3)(b) | |
Skin Designation | X | |
Final Rule Limits**: | ||
TWA | - | 0.5 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | X | |
Antimony and compounds (as Sb) | CAS NO(f):7440-36-0 | |
Transitional Limits: | ||
PEL* | - | 0.5 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 0.5 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
ANTU (alpha Naphthylthiourea) | CAS NO(f):86-88-4 | |
Transitional Limits: | ||
PEL* | - | 0.3 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 0.3 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Arsenic, organic compounds (as As) | CAS NO(f):7440-38-2 | |
Transitional Limits: | ||
PEL* | - | 0.5 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 0.5 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Arsenic, inorganic compounds (as As); | ||
see 1910.1018 | ||
Arsine | CAS NO(f):7784-42-1 | |
Transitional Limits: | ||
PEL* | 0.05 ppm(a) | 0.2 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 0.05 ppm(a) | 0.2 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Asbestos | CAS NO (f): Varies | |
see 1910.1001 and 1910.1101 | ||
Atrazine | CAS NO(f):1912-24-9 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 5 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Azinphos-metyl | CAS NO(f):86-50-0 | |
Transitional Limits: | ||
PEL* | - | 0.2 mg/m(3)(b) |
Skin Designation | X | |
Final Rule Limits**: | ||
TWA | - | 0.2 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | X | |
Barium, soluble compounds (as Ba) | CAS NO(f):7440-39-3 | |
Transitional Limits: | ||
PEL* | - | 0.5 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 0.5 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Barium sulfate | CAS NO(f):7727-43-7 | |
Total Dust | ||
Transitional Limits: | ||
PEL* | - | 15 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 10 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Respirable fraction | ||
Transitional Limits: | ||
PEL* | - | 5 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 5 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Benomyl | CAS NO(f):17804-35-2 | |
Total Dust | ||
Transitional Limits: | ||
PEL* | - | 15 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 10 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Respirable fraction | ||
Transitional Limits: | ||
PEL* | - | 5 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 5 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Benzene | CAS NO(f):71-43-2 | |
see 1910.1028 | ||
See Table Z-2 for the limits applicable in the operations or sectors excluded in 1910.1028(d) Footnote (d) The final benzene standard in 1910.1028 applies to all occupational exposures to benzene except some subsegments of industry where exposures are consistently under the action level (i.e., distribution and sale of fuels, sealed containers and pipelines, coke production, oil and gas drilling and production, natural gas processing, and the percentage exclusion for liquid mixtures); for the excepted subsegments, the benzene limits in Table Z-2 apply. | ||
Benzidine | CAS NO(f):92-87-5 | |
see 1910.1010 | ||
p-Benzoquinone; | ||
see Quinone | ||
Benzo (a) pyrene; | ||
see Coal tar pitch volatiles | ||
Benzoyl peroxide | CAS NO(f):94-36-0 | |
Transitional Limits: | ||
PEL* | - | 5 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 5 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Benzyl chloride | CAS NO(f):100-44-7 | |
Transitional Limits: | ||
PEL* | 1 ppm(a) | 5 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 1 ppm(a) | 5 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Beryllium and beryllium compounds | ||
(as Be) | CAS NO(f):7440-41-7 | |
Transitional Limits: | ||
PEL* | Tbl. Z-2 | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | Tbl. Z-2 | Tbl. Z-2 |
STEL(c) | Tbl. Z-2 | |
CEILING | - | - |
Skin Designation | - | |
Biphenyl; | ||
see Diphenyl | ||
Bismuth telluride, Undoped | CAS NO(f):1304-82-1 | |
Total Dust | ||
Transitional Limits: | ||
PEL* | - | 15 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | - |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Respirable fraction | ||
Transitional Limits: | ||
PEL* | - | 5 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 5 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Bismuth telluride, Se-doped | ||
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 5 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Borates, tetra, sodium salts | ||
Anhydrous | CAS NO (f): 1330-43-4 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 10 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Decahydrate | CAS NO(f):1303-96-4 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 10 mg/m (3) (b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Pentahydrate | CAS NO(f):12179-04-3 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 10 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Boron oxide | CAS NO(f):1303-86-2 | |
Transitional Limits: | ||
PEL* | - | 15 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 10 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Boron tribromide | CAS NO(f):10294-33-4 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | - |
STEL(c) | - | - |
CEILING | 1 ppm(a) | 10 mg/m(3)(b) |
Skin Designation | - | |
Boron trifluoride | CAS NO(f):7637-07-2 | |
Transitional Limits: | ||
PEL* | (C) 1 ppm(a) | (C) 3 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | - |
STEL(c) | - | - |
CEILING | 1 ppm(a) | 3 mg/m(3)(b) |
Skin Designation | - | |
Footnote (C) denotes a ceiling limit. | ||
Bromacil | CAS NO(f):314-40-9 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 1 ppm(a) | 10 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Bromine | CAS NO(f):7726-95-6 | |
Transitional Limits: | ||
PEL* | 0.1 ppm(a) | 0.7 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 0.1 ppm(a) | 0.7 mg/m(3)(b) |
STEL(c) | 0.3 ppm(a) | 2 mg/m(3)(b) |
CEILING | - | - |
Skin Designation | - | |
Bromine pentafluoride | CAS NO(f):7789-30-2 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 0.1 ppm(a) | 0.7 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Bromoform | CAS NO(f):75-25-2 | |
Transitional Limits: | ||
PEL* | 0.5 ppm(a) | 5 mg/m(3)(b) |
Skin Designation | X | |
Final Rule Limits**: | ||
TWA | 0.5 ppm(a) | 5 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | X | |
Butadiene (1,3-Butadiene) | CAS NO(f):106-99-0 | |
Transitional Limits: | ||
PEL* | 1000 ppm(a) | 2200 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 1000 ppm(a) | 2200 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Butane | CAS NO(f):106-97-8 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 800 ppm(a) | 1900 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Butanethiol; | ||
see Butyl mercaptan | ||
2-Butanone (Methyl ethyl ketone) | CAS NO(f):78-93-3 | |
Transitional Limits: | ||
PEL* | 200 ppm(a) | 590 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 200 ppm(a) | 590 mg/m(3)(b) |
STEL(c) | 300 ppm(a) | 885 mg/m(3)(b) |
CEILING | - | - |
Skin Designation | - | |
2-Butoxyethanol | CAS NO(f):111-76-2 | |
Transitional Limits: | ||
PEL* | 50 ppm(a) | 240 mg/m(3)(b) |
Skin Designation | X | |
Final Rule Limits**: | ||
TWA | 25 ppm(a) | 120 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | X | |
n-Butyl-acetate | CAS NO(f):123-86-4 | |
Transitional Limits: | ||
PEL* | 150 ppm(a) | 710 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 150 ppm(a) | 710 mg/m(3)(b) |
STEL(c) | 200 ppm(a) | 950 mg/m(3)(b) |
CEILING | - | - |
Skin Designation | - | |
sec-Butyl acetate | CAS NO(f):105-46-4 | |
Transitional Limits: | ||
PEL* | 200 ppm(a) | 950 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 200 ppm(a) | 950 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
tert-Butyl-acetate | CAS NO(f):540-88-5 | |
Transitional Limits: | ||
PEL* | 200 ppm(a) | 950 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 200 ppm (a) | 950 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Butyl acrylate | CAS NO(f):141-32-2 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 10 ppm(a) | 55 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
n-Butyl alcohol | CAS NO(f):71-36-3 | |
Transitional Limits: | ||
PEL* | 100 ppm(a) | 300 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | - |
STEL(c) | - | - |
CEILING | 50 ppm(a) | 150 mg/m(3)(b) |
Skin Designation | X | |
sec-Butyl alcohol | CAS NO(f):78-92-2 | |
Transitional Limits: | ||
PEL* | 150 ppm(a) | 450 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 100 ppm(a) | 305 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
tert-Butyl alcohol | CAS NO(f):75-65-0 | |
Transitional Limits: | ||
PEL* | 100 ppm(a) | 300 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 100 ppm(a) | 300 mg/m(3)(b) |
STEL(c) | 150 ppm(a) | 450 mg/m(3)(b) |
CEILING | - | - |
Skin Designation | - | |
Butylamine | CAS NO (f): 109-73-9 | |
Transitional Limits: | ||
PEL* | (C) 5 ppm(a) | (C) 15 mg/m(3)(b) |
Skin Designation | X | |
Final Rule Limits**: | ||
TWA | - | - |
STEL(c) | - | - |
CEILING | 5 ppm(a) | 15 mg/m(3)(b) |
Skin Designation | X | |
Footnote (C) denotes a ceiling limit. | ||
tert-Butyl chromate (as CrO (3)) | CAS NO(f):1189-85-1 | |
Transitional Limits: | ||
PEL* | - | (C) 0.1 mg/m(3)(b) |
Skin Designation | X | |
Final Rule Limits**: | ||
TWA | - | - |
STEL(c) | - | - |
CEILING | 0.1 mg/m(3)(b) | |
Skin Designation | X | |
Footnote (C) denotes a ceiling limit. | ||
n-Butyl glycidyl ether (BGE) | CAS NO(f):2426-08-6 | |
Transitional Limits: | ||
PEL* | 50 ppm(a) | 270 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 25 ppm(a) | 135 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
n-Butyl lactate | CAS NO(f):138-22-7 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 5 ppm(a) | 25 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Butyl mercaptan | CAS NO(f):109-79-5 | |
Transitional Limits: | ||
PEL* | 10 ppm(a) | 35 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 0.5 ppm(a) | 1.5 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
o-sec-Butylphenol | CAS NO(f):89-72-5 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 5 ppm(a) | 30 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | X | |
p-tert-Butyltoluene | CAS NO(f):98-51-1 | |
Transitional Limits: | ||
PEL* | 10 ppm(a) | 60 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 10 ppm(a) | 60 mg/m(3)(b) |
STEL(c) | 20 ppm(a) | 120 mg/m(3)(b) |
CEILING | - | - |
Skin Designation | - | |
* Cadmium fume (as Cd) | CAS NO(f): 7440-43-9 | |
(This entire line has been replaced per 57 FR 42388, Sept. 14, 1992 by the following): | ||
Cadmium; see 1910.1027. See Table Z-2 for the exposure limits for any operations or sectors where the exposure limits in 1910.1027 are stayed or otherwise not in effect. | ||
Cadmium dust (as Cd) | CAS NO(f): 7440-43-9 | |
(This entire line has been replaced per 57 FR 42388, Sept. 14, 1992 by the following): | ||
Cadmium; see 1910.1027. See Table Z-2 for the exposure limits for any operations or sectors where the exposure limits in 1910.1027 are stayed or otherwise not in effect. | ||
Calcium Carbonate | CAS NO(f):1317-65-3 | |
Total Dust | ||
Transitional Limits: | ||
PEL* | - | 15 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 15 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Respirable fraction | ||
Transitional Limits: | ||
PEL* | - | 5 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 5 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Calcium cyanamide | CAS NO(f):156-62-7 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 0.5 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Calcium hydroxide (i) | CAS NO(f):1305-62-0 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 5 mg/m(3)(b)(i) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Footnote (i) The Final Rule Limit of 5 mg/m(3) is not in effect as a result of reconsideration. | ||
Calcium hydroxide is covered by the exposure limits for particulates not otherwise regulated of 5 mg/m(3) respirable dust and 5 mg/m(3) total dust. | ||
Calcium oxide (j) | CAS NO(f):1305-78-8 | |
Transitional Limits: | ||
PEL* | - | 5 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 5 mg/m(3)(b)(j) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Footnote (j) The Final Rule Limit TWA of 5 mg/m(3) is not in effect as a result of reconsideration. | ||
The calcium oxide Transitional Limit of 5 mg/m(3) remains in effect and employee exposures shall be kept below that level pursuant to the methods of compliance specified in 29 CFR 1910.1000(e). | ||
Calcium Silicate | CAS NO(f):1344-95-2 | |
Total Dust | ||
Transitional Limits: | ||
PEL* | - | 15 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 15 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Respirable fraction | ||
Transitional Limits: | ||
PEL* | - | 5 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 5 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Calcium sulfate | CAS NO(f):7778-18-9 | |
Total Dust | ||
Transitional Limits: | ||
PEL* | - | 15 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 15 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Respirable fraction | ||
Transitional Limits: | ||
PEL* | - | 5 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 5 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Camphor, synthetic | CAS NO(f):76-22-2 | |
Transitional Limits: | ||
PEL* | - | 2 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 2 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Caprolactam | CAS NO(f):105-60-2 | |
Dust | ||
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 1 mg/m(3)(b) |
STEL(c) | 3 mg/m(3)(b) | |
CEILING | - | - |
Skin Designation | - | |
Vapor | ||
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 5 ppm(a) | 20 mg/m(3)(b) |
STEL(c) | 10 ppm(a) | 40 mg/m(3)(b) |
CEILING | - | - |
Skin Designation | - | |
Captafol (Difolatan (R)) | CAS NO(f): 2425-06-1 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 0.1 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Captan | CAS NO(f): 133-06-2 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 5 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Carbaryl (Sevin (R)) | CAS NO(f): 63-25-2 | |
Transitional Limits: | ||
PEL* | - | 5 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 5 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Carbofuran (Furadan (R)) | CAS NO(f): 1563-66-2 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 0.1 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Carbon black | CAS NO(f): 1333-86-4 | |
Transitional Limits: | ||
PEL* | - | 3.5 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 3.5 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Carbon dioxide | CAS NO(f): 124-38-9 | |
Transitional Limits: | ||
PEL* | 5000(e) ppm(a) | 9,000 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 10,000 ppm(a) | 18,000 mg/m(3)(b) |
STEL(c) | 30,000 ppm(a) | 54,000 mg/m(3)(b) |
CEILING | - | - |
Skin Designation | - | |
Footnote (e) Exposures under 10,000 ppm to be cited de minimus. | ||
Carbon disulfide | CAS NO(f): 75-15-0 | |
Transitional Limits: | ||
PEL* | Tbl. Z-2 | |
Final Rule Limits**: | ||
TWA | 4 ppm(a) | 12 mg/m(3)(b) |
STEL(c) | 12 ppm(a) | 36 mg/m(3)(b) |
CEILING | - | - |
Skin Designation | X | |
Carbon monoxide | CAS NO(f): 630-08-0 | |
Transitional Limits: | ||
PEL* | 50 ppm(a) | 55 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 35 ppm(a) | 40 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | 200 ppm(a)(m) | 229 mg/m(3)(b)(m) |
Skin Designation | - | |
Note: Stayed CEILING for blast furnace operations, vessel blowing at basic oxygen furnaces and sinter plants in the steel industry (SIC 33), termination pending (FR 55: 3724, 2/5/90) | ||
Footnote (m) Sampling for the carbon monoxide ceiling shall be averaged over 5 minutes but an instantaneous reading over 1500 ppm shall not be exceeded. | ||
Carbon tetrabromide | CAS NO(f): 558-13-4 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 0.1 ppm(a) | 1.4 mg/m(3)(b) |
STEL(c) | 0.3 ppm(a) | 4 mg/m(3)(b) |
CEILING | - | - |
Skin Designation | - | |
Carbon tetrachloride | CAS NO(f): 56-23-5 | |
Transitional Limits: | ||
PEL* | Tbl. Z-2 | |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 2 ppm(a) | 12.6 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Carbonyl fluoride | CAS NO(f): 353-50-4 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 2 ppm(a) | 5 mg/m(3)(b) |
STEL(c) | 5 ppm(a) | 15 mg/m(3)(b) |
CEILING | - | - |
Skin Designation | - | |
Catechol (Pyrocatechol) | CAS NO(f): 120-80-9 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 5 ppm(a) | 20 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | X | |
Cellulose | CAS NO(f): 9004-34-6 | |
Total Dust | ||
Transitional Limits: | ||
PEL* | - | 15 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 15 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Respirable fraction | ||
Transitional Limits: | ||
PEL* | - | 5 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 5 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Cesium hydroxide | CAS NO(f): 21351-79-1 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 2 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Chlordane | CAS NO(f): 57-74-9 | |
Transitional Limits: | ||
PEL* | - | 0.5 mg/m(3)(b) |
Skin Designation | X | |
Final Rule Limits**: | ||
TWA | - | - |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | X | |
Chlorinated camphene | CAS NO(f): 8001-35-2 | |
Transitional Limits: | ||
PEL* | - | 0.5 mg/m(3)(b) |
Skin Designation | X | |
Final Rule Limits**: | ||
TWA | - | 0.5 mg/m(3)(b) |
STEL(c) | 1 mg/m(3)(b) | |
CEILING | - | - |
Skin Designation | X | |
Chlorinated diphenyl oxide | CAS NO(f): 55720-99-5 | |
Transitional Limits: | ||
PEL* | - | 0.5 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 0.5 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Chlorine | CAS NO(f): 7782-50-5 | |
Transitional Limits: | ||
PEL* | (C) 1 ppm(a) | (C) 3 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 0.5 ppm(a) | 1.5 mg/m(3)(b) |
STEL(c) | 1 ppm(a) | 3 mg/m(3)(b) |
CEILING | - | - |
Skin Designation | - | |
Footnote (C) denotes a ceiling limit. | ||
Chlorine dioxide | CAS NO(f): 10049-04-4 | |
Transitional Limits: | ||
PEL* | 0.1 ppm(a) | 0.3 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 0.1 ppm(a) | 0.3 mg/m(3)(b) |
STEL(c) | 0.3 ppm(a) | 0.9 mg/m(3)(b) |
CEILING | - | - |
Skin Designation | - | |
Chlorine trifluoride | CAS NO(f): 7790-91-2 | |
Transitional Limits: | ||
PEL* | (C) 0.1 ppm(a) | (C) 0.4 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | - |
STEL(c) | - | - |
CEILING | 0.1 ppm(a) | 0.4 mg/m(3)(b) |
Skin Designation | - | |
Footnote (C) denotes a ceiling limit. | ||
Chloroacetaldehyde | CAS NO(f): 107-20-0 | |
Transitional Limits: | ||
PEL* | (C) 1 ppm(a) | (C) 3 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | - |
STEL(c) | - | - |
CEILING | 1 ppm(a) | 3 mg/m(3)(b) |
Skin Designation | - | |
Footnote (C) denotes a ceiling limit. | ||
a-Chloroacetophenone (Phenacyl chloride) | CAS NO(f): 532-27-4 | |
Transitional Limits: | ||
PEL* | 0.05 ppm(a) | 0.3 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 0.05 ppm(a) | 0.3 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Chloroacetyl chloride | CAS NO(f): 79-04-9 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 0.05 ppm(a) | 0.2 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Chlorobenzene | CAS NO(f): 108-90-7 | |
Transitional Limits: | ||
PEL* | 75 ppm(a) | 350 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 75 ppm(a) | 350 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
o-Chlorobenzylidene malononitrile | CAS NO(f): 2698-41-1 | |
Transitional Limits: | ||
PEL* | 0.05 ppm(a) | 0.4 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | - |
STEL(c) | - | - |
CEILING | 0.05 ppm(a) | 0.4 mg/m(3)(b) |
Skin Designation | X | |
Chlorobromomethane | CAS NO(f): 74-97-5 | |
Transitional Limits: | ||
PEL* | 200 ppm(a) | 1050 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 200 ppm(a) | 1050 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
2-Chloro-1,3-butadiene; | ||
see b-Chloroprene | ||
Chlorodifluoromethane | CAS NO(f): 75-45-6 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 1000 ppm(a) | 3500 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Chlorodiphenyl (42% Chlorine) (PCB) | CAS NO(f): 53469-21-9 | |
Transitional Limits: | ||
PEL* | - | 1 mg/m(3)(b) |
Skin Designation | X | |
Final Rule Limits**: | ||
TWA | - | 1 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | X | |
Chlorodiphenyl (54% Chlorine) (PCB) | CAS NO(f): 11097-69-1 | |
Transitional Limits: | ||
PEL* | - | 0.5 mg/m(3)(b) |
Skin Designation | X | |
Final Rule Limits**: | ||
TWA | - | 0.5 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | X | |
1-Chloro, 2,3-epoxypropane; | ||
see Epichlorohydrin | ||
2-Chloroethanol; | ||
see Ethylene chlorohydrin | ||
Chloroethylene; | ||
see Vinyl chloride | ||
Chloroform (Trichloromethane) | CAS NO(f): 67-66-3 | |
Transitional Limits: | ||
PEL* | (C) 50 ppm(a) | (C) 240 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 2 ppm(a) | 9.78 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Footnote (C) denotes a ceiling limit. | ||
bis (Chloromethyl) ether | CAS NO(f): 542-88-1 | |
see 1910.1008 | ||
Chloromethyl methyl ether | CAS NO(f): 107-30-2 | |
see 1910.1006 | ||
1-Chloro-1-nitropropane | CAS NO(f): 600-25-9 | |
Transitional Limits: | ||
PEL* | 20 ppm(a) | 100 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 2 ppm(a) | 10 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Chloropentafluoroethane | CAS NO(f): 76-15-3 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 1000 ppm(a) | 6320 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Chloropicrin | CAS NO(f): 76-06-2 | |
Transitional Limits: | ||
PEL* | 0.1 ppm(a) | 0.7 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 0.1 ppm(a) | 0.7 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
beta-Chloroprene | CAS NO(f): 126-99-8 | |
Transitional Limits: | ||
PEL* | 25 ppm(a) | 90 mg/m(3)(b) |
Skin Designation | X | |
Final Rule Limits**: | ||
TWA | 10 ppm(a) | 35 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | X | |
o-Chlorostyrene | CAS NO(f): 2039-87-4 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 50 ppm(a) | 285 mg/m(3)(b) |
STEL(c) | 75 ppm(a) | 428 mg/m(3)(b) |
CEILING | - | - |
Skin Designation | - | |
o-Chlorotoluene | CAS NO(f): 95-49-8 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 50 ppm(a) | 250 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
2-Chloro-6-trichloro-methyl pyridine | CAS NO(f): 1929-82-4 | |
Total Dust | ||
Transitional Limits: | ||
PEL* | - | 15 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 15 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Respirable fraction | ||
Transitional Limits: | ||
PEL* | - | 5 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 5 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Chlorpyrifos | CAS NO(f): 2921-88-2 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 0.2 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | X | |
Chromic acid and chromates (as CrO (3)) | CAS NO(f): 7440-47-3 | |
Transitional Limits: | ||
PEL* | - | Tbl. Z-2 |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | - |
STEL(c) | - | - |
CEILING | 0.1 ppm(a) | |
Skin Designation | - | |
* Chromium (II) compounds (as Cr) | CAS NO(f): 7440-47-3 | |
(This entry removed by 57 FR 29205, July 1, 1992) | ||
Chromium, Sol. chromic, chromous salts (as Cr) | CAS NO(f): 7440-47-3 | |
Transitional Limits: | ||
PEL* | - | 0.5 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 0.5 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Chromium, metal and soluble salts | CAS NO(f): 7440-47-3 | |
Transitional Limits: | ||
PEL* | - | 1 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 1 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Chrysene: | ||
see Coal tar pitch volatiles | ||
Clopidol | CAS NO(f): 2971-90-6 | |
Total Dust | ||
Transitional Limits: | ||
PEL* | - | 15 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 15 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Respirable fraction | ||
Transitional Limits: | ||
PEL* | - | 5 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 5 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Coal dust (Less than 5% SiO (2)) | ||
Respirable fraction | ||
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 9 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Coal dust (Greater than or equal to 5% SiO (2)) | ||
Respirable quartz fraction | ||
Transitional Limits: | ||
PEL* | - | Tbl. Z-3 |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 0.1 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Coal tar pitch volatiles | CAS NO(f): 65996-93-2 | |
(Benzine soluble fraction), Anthracene, BaP, Phenanthrene, Acridine, Chrysene, Pyrene | ||
Transitional Limits: | ||
PEL* | - | 0.2 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 0.2 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Cobalt metal, dust, and fume (as Co) | CAS NO(f): 7440-48-4 | |
Transitional Limits: | ||
PEL* | - | 0.1 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 0.05 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Cobalt carbonyl (as Co) | CAS NO(f): 10210-68-1 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 0.1 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Cobalt hydrocarbonyl (as Co) | CAS NO(f): 16842-03-8 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 0.1 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Coke oven emissions; | ||
see 1910.1029 | ||
Copper | CAS NO(f): 7440-50-8 | |
Fume (as Cu) | ||
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 0.1 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Dusts and mists (as Cu) | ||
Transitional Limits: | ||
PEL* | - | 1 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 1 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Cotton dust (Raw) | ||
Transitional Limits: | ||
PEL* | 1 mg/m(3)(b) | |
TWA | - | 1 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
This 8-hour TWA applies to respirable dust as measured by a vertical elutriator cotton dust sampler or equivalent instrument. The time-weighted average applies to the cotton waste processing operations of waste recycling (sorting, blending, cleaning, and willowing) and garnetting. See also 1910.1043 for cotton dust limits applicable to other sectors. | ||
Crag herbicide (Sesone) | CAS NO(f): 136-78-7 | |
Total Dust | ||
Transitional Limits: | ||
PEL* | - | 15 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | - |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Respirable fraction | ||
Transitional Limits: | ||
PEL* | - | 5 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 5 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Cresol, all isomers | CAS NO(f): 1319-77-3 | |
Transitional Limits: | ||
PEL* | 5 ppm(a) | 22 mg/m(3)(b) |
Skin Designation | X | |
Final Rule Limits**: | ||
TWA | 5 ppm(a) | 22 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | X | |
Crotonaldehyde | CAS NO(f): 123-73-9; 4170-30-3 | |
Transitional Limits: | ||
PEL* | 2 ppm(a) | 6 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 2 ppm(a) | 6 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Crufomate | CAS NO(f): 299-86-5 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 5 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Cumene | CAS NO(f): 98-82-8 | |
Transitional Limits: | ||
PEL* | 50 ppm(a) | 245 mg/m(3)(b) |
Skin Designation | X | |
Final Rule Limits**: | ||
TWA | 50 ppm(a) | 245 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | X | |
Cyanamide | CAS NO(f): 420-04-2 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 2 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Cyanides (as CN) | CAS NO(f): Varies With Compound | |
Transitional Limits: | ||
PEL* | - | 5 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 5 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Cyanogen | CAS NO(f): 460-19-5 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 10 ppm(a) | 20 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Cyanogen chloride | CAS NO(f): 506-77-4 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | - |
STEL(c) | - | - |
CEILING | 0.3 ppm(a) | 0.6 mg/m(3)(b) |
Skin Designation | - | |
Cyclohexane | CAS NO(f): 110-82-7 | |
Transitional Limits: | ||
PEL* | 300 ppm(a) | 1050 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 300 ppm(a) | 1050 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Cyclohexanol | CAS NO(f): 108-93-0 | |
Transitional Limits: | ||
PEL* | 50 ppm(a) | 200 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 50 ppm(a) | 200 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | X | |
Cyclohexanone | CAS NO(f): 108-94-1 | |
Transitional Limits: | ||
PEL* | 50 ppm(a) | 200 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 25 ppm(a) | 100 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | X | |
Cyclohexene | CAS NO(f): 110-83-8 | |
Transitional Limits: | ||
PEL* | 300 ppm(a) | 1015 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 300 ppm(a) | 1015 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Cyclohexylamine | CAS NO(f): 108-91-8 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 10 ppm(a) | 40 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Cyclonite | CAS NO(f): 121-82-4 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 1.5 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | X | |
Cyclopentadiene | CAS NO(f): 542-92-7 | |
Transitional Limits: | ||
PEL* | 75 ppm(a) | 200 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 75 ppm(a) | 200 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Cyclopentane | CAS NO(f): 287-92-3 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 600 ppm(a) | 1720 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Cyhexatin | CAS NO(f): 13121-70-5 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 5 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
* 2,4-D (Dichlorophenoxyacetic acid) | CAS NO(f): 94-75-7 | |
Transitional Limits: | ||
PEL* | - | 10 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 10 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Decaborane | CAS NO(f): 17702-41-9 | |
Transitional Limits: | ||
PEL* | 0.05 ppm(a) | 0.3 mg/m(3)(b) |
Skin Designation | X | |
Final Rule Limits**: | ||
TWA | 0.05 ppm(a) | 0.3 mg/m(3)(b) |
STEL(c) | 0.15 ppm(a) | 0.9 mg/m(3)(b) |
CEILING | - | - |
Skin Designation | X | |
Demeton (Systox (R)) | CAS NO(f): 8065-48-3 | |
Transitional Limits: | ||
PEL* | - | 0.1 mg/m(3)(b) |
Skin Designation | X | |
Final Rule Limits**: | ||
TWA | - | 0.1 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | X | |
Dichlorodiphenyltrichloroethane (DDT) | CAS NO(f): 50-29-3 | |
Transitional Limits: | ||
PEL* | - | 1 mg/m(3)(b) |
Skin Designation | X | |
Final Rule Limits**: | ||
TWA | - | 1 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | X | |
Dichlorvos (DDVP) | CAS NO(f): 62-73-7 | |
Transitional Limits: | ||
PEL* | - | 1 mg/m(3)(b) |
Skin Designation | X | |
Final Rule Limits**: | ||
TWA | - | 1 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | X | |
Diacetone alcohol (4-Hydroxy-4-methyl-2-pentanone) | CAS NO(f): 123-42-2 | |
Transitional Limits: | ||
PEL* | 50 ppm(a) | 240 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 50 ppm(a) | 240 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
1,2-Diaminoethane; | ||
see Ethylenediamine | ||
Diazinon | CAS NO(f): 333-41-5 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 0.1 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | X | |
Diazomethane | CAS NO(f): 334-88-3 | |
Transitional Limits: | ||
PEL* | 0.2 ppm(a) | 0.4 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 0.2 ppm(a) | 0.4 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Diborane | CAS NO(f): 19287-45-7 | |
Transitional Limits: | ||
PEL* | 0.1 ppm(a) | 0.1 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 0.1 ppm(a) | 0.1 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
1,2-Dibromo-3-chloropropane | CAS NO(f): 96-12-8 | |
see 1910.1044 | ||
2-N-Dibutylaminoethanol | CAS NO(f): 102-81-8 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 2 ppm(a) | 14 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Dibutyl phosphate | CAS NO(f): 107-66-4 | |
Transitional Limits: | ||
PEL* | 1 ppm(a) | 5 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 1 ppm(a) | 5 mg/m(3)(b) |
STEL(c) | 2 ppm(a) | 10 mg/m(3)(b) |
CEILING | - | - |
Skin Designation | - | |
Dibutyl phthalate | CAS NO(f): 84-74-2 | |
Transitional Limits: | ||
PEL* | - | 5 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 5 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Dichloroacetylene | CAS NO(f): 7572-29-4 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | - |
STEL(c) | - | - |
CEILING | 0.1 ppm(a) | 0.4 mg/m(3)(b) |
Skin Designation | - | |
o-Dichlorobenzene | CAS NO(f): 95-50-1 | |
Transitional Limits: | ||
PEL* | (C) 50 ppm(a) | (C) 300 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | - |
STEL(c) | - | - |
CEILING | 50 ppm(a) | 300 mg/m(3)(b) |
Skin Designation | - | |
Footnote (C) denotes a ceiling limit. | ||
p-DICHLOROBENZENE | CAS NO(f): 106-46-7 | |
Transitional Limits: | ||
PEL* | 75 ppm(a) | 450 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 75 ppm(a) | 450 mg/m(3)(b) |
STEL(c) | 110 ppm(a) | 675 mg/m(3)(b) |
CEILING | - | - |
Skin Designation | - | |
3,3′ -Dichlorobenzidine; | CAS NO(f): 91-94-1 | |
see 1910.1007 | ||
Dichlorodifluoro-methane | CAS NO(f): 75-71-8 | |
Transitional Limits: | ||
PEL* | 1000 ppm(a) | 4950 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 1000 ppm(a) | 4950 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
1,3-Dichloro-5,5-dimethyl hydantoin | CAS NO(f): 118-52-5 | |
Transitional Limits: | ||
PEL* | - | 0.2 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 0.2 mg/m(3)(b) |
STEL(c) | - | 0.4 mg/m(3)(b) |
CEILING | - | - |
Skin Designation | - | |
1,1-Dichloroethane | CAS NO(f): 75-34-3 | |
Transitional Limits: | ||
PEL* | 100 ppm(a) | 400 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 100 ppm(a) | 400 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
1,2-Dichloroethylene | CAS NO(f): 540-59-0 | |
Transitional Limits: | ||
PEL* | 200 ppm(a) | 790 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 200 ppm(a) | 790 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Dichlorethyl ether | CAS NO(f): 111-44-4 | |
Transitional Limits: | ||
PEL* | (C) 15 ppm(a) | (C) 90 mg/m(3)(b) |
Skin Designation | X | |
Final Rule Limits**: | ||
TWA | 5 ppm(a) | 30 mg/m(3)(b) |
STEL(c) | 10 ppm(a) | 60 mg/m(3)(b) |
CEILING | - | - |
Skin Designation | X | |
Footnote (C) denotes a ceiling limit. | ||
Dichloromethane; see Methylene chloride | ||
Dichloromonofluoro-methane | CAS NO(f): 75-43-4 | |
Transitional Limits: | ||
PEL* | 1000 ppm(a) | 4200 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 10 ppm(a) | 40 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
1,1-Dichloro-1-nitroethane | CAS NO(f): 594-72-9 | |
Transitional Limits: | ||
PEL* | (C) 10 ppm(a) | (C) 60 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 2 ppm(a) | 10 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | ||
Footnote (C) denotes a ceiling limit. | ||
1,2-Dichloropropane; | ||
see Propylenedichloride | ||
1,3-Dichloropropene | CAS NO(f): 542-75-6 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 1 ppm(a) | 5 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | X | |
2,2-Dichloropropionic acid | CAS NO(f): 75-99-0 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 1 ppm(a) | 6 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Dichlorotetrafluoroethane | CAS NO(f): 76-14-2 | |
Transitional Limits: | ||
PEL* | 1000 ppm(a) | 7000 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 1000 ppm(a) | 7000 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Dicrotophos | CAS NO(f): 141-66-2 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 0.25 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | X | |
Dicyclopentadiene | CAS NO(f): 77-73-6 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 5 ppm(a) | 30 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Dicyclopentadienyl iron | CAS NO(f): 102-54-5 | |
Total Dust | ||
Transitional Limits: | ||
PEL* | - | 15 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 10 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Respirable fraction | ||
Transitional Limits: | ||
PEL* | - | 5 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 5 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | ||
Dieldrin | CAS NO(f): 60-57-1 | |
Transitional Limits: | ||
PEL* | 0.25 mg/m(3)(b) | |
Skin Designation | X | |
Final Rule Limits**: | ||
TWA | - | .025 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | X | |
Diethanolamine | CAS NO(f): 111-42-2 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 3 ppm(a) | 15 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Diethylamine | CAS NO(f): 109-89-7 | |
Transitional Limits: | ||
PEL* | 25 ppm(a) | 75 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 10 ppm(a) | 30 mg/m(3)(b) |
STEL(c) | 25 ppm(a) | 75 mg/m(3)(b) |
CEILING | - | - |
Skin Designation | - | |
2-Diethylaminoethanol | CAB NO(f): 100-37-8 | |
Transitional Limits: | ||
PEL* | 10 ppm(a) | 50 mg/m(3)(b) |
Skin Designation | X | |
Final Rule Limits**: | ||
TWA | 10 ppm(a) | 50 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | X | |
Diethylene triamine | CAS NO(f): 111-40-0 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 1 ppm(a) | 4 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Diethyl ether; | ||
see Ethyl ether | ||
Diethyl ketone | CAS NO(f): 96-22-0 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 200 ppm(a) | 705 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Diethyl phthalate | CAS NO(f): 84-66-2 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 5 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Difluorodibromomethane | CAS NO(f): 75-61-6 | |
Transitional Limits: | ||
PEL* | 100 ppm(a) | 860 mg/m(3)(b) |
Skin Designation | ||
Final Rule Limits**: | ||
TWA | 100 ppm(a) | 860 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Diglycidyl ether (DGE) | CAS NO(f): 2238-07-5 | |
Transitional Limits: | ||
PEL* | (C) 0.5 ppm(a) | (C) 2.8 mg/m(3)(b) |
Skin Designation | ||
Final Rule Limits**: | ||
TWA | 0.1 ppm(a) | 0.5 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Footnote (C) denotes a ceiling limit. | ||
Dihydroxybenzene; | ||
see Hydroquinone | ||
Diisobutyl ketone | CAS NO(f): 108-83-8 | |
Transitional Limits: | ||
PEL* | 50 ppm(a) | 290 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 25 ppm(a) | 150 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Diisopropylamine | CAS NO(f): 108-18-9 | |
Transitional Limits: | ||
PEL* | 5 ppm(a) | 20 mg/m(3)(b) |
Skin Designation | X | |
Final Rule Limits**: | ||
TWA | 5 ppm(a) | 20 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | X | |
4-Dimethylaminoazobenzene; | CAS NO(f): 60-11-7 | |
see 1910.1015 | ||
Dimethoxymethane; | ||
see Methylal | ||
Dimethyl acetamide | CAS NO(f): 127-19-5 | |
Transitional Limits: | ||
PEL* | 10 ppm(a) | 35 mg/m(3)(b) |
Skin Designation | ||
Final Rule Limits**: | ||
TWA | 10 ppm(a) | 35 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Dimethylamine | CAS NO(f): 124-40-3 | |
Transitional Limits: | ||
PEL* | 10 ppm(a) | 18 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 10 ppm(a) | 18 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Dimethylaminobenzene; | ||
see Xylidine | ||
* Dimethylaniline (N,N-Dimethylaniline) | CAS NO(f): 121-69-7 | |
Transitional Limits: | ||
PEL* | 5 ppm(a) | 25 mg/m(3)(b) |
Skin Designation | X | |
Final Rule Limits**: | ||
TWA | 5 ppm(a) | 25 mg/m(3)(b) |
STEL(c) | 10 ppm(a) | 50 mg/m(3)(b) |
CEILING | - | - |
Skin Designation | X | |
Dimethylbenzene; | ||
see Xylene | ||
Dimethyl-1,2-dibromo-2,2-dichloroethyl phosphate | CAS NO(f): 300-76-5 | |
Transitional Limits: | ||
PEL* | - | 3 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 3 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | X | |
Dimethyloformamide | CAS NO(f): 68-12-2 | |
Transitional Limits: | ||
PEL* | 10 ppm(a) | 30 mg/m(3)(b) |
Skin Designation | X | |
Final Rule Limits**: | ||
TWA | 10 ppm(a) | 30 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | X | |
2,6-Dimethyl-4-hepta-none; | ||
see Diisobutyl ketone | ||
1,1-Dimethylhydrazine | CAS NO(f): 57-14-7 | |
Transitional Limits: | ||
PEL* | 0.5 ppm(a) | 1 mg/m(3)(b) |
Skin Designation | X | |
Final Rule Limits**: | ||
TWA | 0.5 ppm(a) | 1 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | X | |
Dimethylphthalate | CAS NO(f): 131-11-3 | |
Transitional Limits: | ||
PEL* | - | 5 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 5 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Dimethyl sulfate | CAS NO(f): 77-78-1 | |
Transitional Limits: | ||
PEL* | 1 ppm(a) | 5 mg/m(3)(b) |
Skin Designation | X | |
Final Rule Limits**: | ||
TWA | 0.1 ppm(a) | 0.5 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | X | |
Dinitolmide (3,5-Dinitro-o-toluamide) | CAS NO(f): 148-01-6 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 5 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Dinitrobenzene (all isomers) | CAS NO(f): (alpha-) 528-29-0; (meta-) 99-65-0; (para-) 100-25-4 | |
Transitional Limits: | ||
PEL* | - | 1 mg/m(3)(b) |
Skin Designation | X | |
Final Rule Limits**: | ||
TWA | - | 1 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | X | |
Dinitro-o-cresol | CAS NO(f): 534-52-1 | |
Transitional Limits: | ||
PEL* | - | 0.2 mg/m(3)(b) |
Skin Designation | X | |
Final Rule Limits**: | ||
TWA | - | 0.2 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | X | |
Dinitrotoluene | CAS NO(f): 25321-14-6 | |
Transitional Limits: | ||
PEL* | - | 1.5 mg/m(3)(b) |
Skin Designation | X | |
Final Rule Limits**: | ||
TWA | - | 1.5 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | X | |
Dioxane (Diethylene dioxide) | CAS NO(f): 123-91-1 | |
Transitional Limits: | ||
PEL* | 100 ppm(a) | 360 mg/m(3)(b) |
Skin Designation | X | |
Final Rule Limits**: | ||
TWA | 25 ppm(a) | 90 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | X | |
Dioxathion (Delnav) | CAS NO(f): 78-34-2 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 0.2 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | X | |
Diphenyl (Biphenyl) | CAS NO(f): 92-52-4 | |
Transitional Limits: | ||
PEL* | 0.2 ppm(a) | 1 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 0.2 ppm(a) | 1 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Diphenylamine | CAS NO(f): 122-39-4 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 10 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Diphenylmethane diisocyanate; | ||
see Methylene bisphenyl isocyanate | ||
Dipropylene glycol methyl ether | CAS NO(f): 34590-94-8 | |
Transitional Limits: | ||
PEL* | 100 ppm(a) | 600 mg/m(3)(b) |
Skin Designation | X | |
Final Rule Limits**: | ||
TWA | 100 ppm(a) | 600 mg/m(3)(b) |
STEL(c) | 150 ppm(a) | 900 mg/m(3)(b) |
CEILING | - | - |
Skin Designation | X | |
Dipropyl ketone | CAS NO(f): 123-19-3 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 50 ppm(a) | 235 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Diquat | CAS NO(f): 86-00-7 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 0.5 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Di-sec octyl phthalate (Di-2-ethylhexyl-phthalate) | CAS NO(f): 117-81-7 | |
Transitional Limits: | ||
PEL* | - | 5 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 5 mg/m(3)(b) |
STEL(c) | - | 10 mg/m(3)(b) |
CEILING | - | - |
Skin Designation | - | |
Disulfiram | CAS NO(f): 97-77-8 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 2 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Disulfoton | CAS NO(f): 298-04-4 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 0.1 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | X | |
2,6-Di-tert-butyl-p-cresol | CAS NO(f): 128-37-0 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 10 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Diuron | CAS NO(f): 330-54-1 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 10 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Divinyl benzene | CAS NO(f): 1321-74-0 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 10 ppm(a) | 50 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
* Emery | CAS NO(f): 12415-34-8 | |
Total Dust | ||
Transitional Limits: | ||
PEL* | - | 15 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 10 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Respirable fraction | ||
Transitional Limits: | ||
PEL* | - | 5 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 5 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Endosulfan | CAS NO(f): 115-29-7 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 0.1 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | X | |
Endrin | CAS NO(f): 72-20-8 | |
Transitional Limits: | ||
PEL* | - | 0.1 mg/m(3)(b) |
Skin Designation | X | |
Final Rule Limits**: | ||
TWA | - | 0.1 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | X | |
Epichlorohydrin | CAS NO(f): 106-89-8 | |
Transitional Limits: | ||
PEL* | 5 ppm(a) | 19 mg/m(3)(b) |
Skin Designation | X | |
Final Rule Limits**: | ||
TWA | 2 ppm(a) | 8 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | X | |
EPN | CAS NO(f): 2104-64-5 | |
Transitional Limits: | ||
PEL* | - | 0.5 mg/m(3)(b) |
Skin Designation | X | |
Final Rule Limits**: | ||
TWA | - | 0.5 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | X | |
1,2-Epoxypropane; | ||
see Propylene oxide | ||
2,3-Epoxy-1-propanol; | ||
see Glycidol | ||
Ethanethiol; | ||
see Ethyl mercaptan | ||
Ethanolamine | CAS NO(f): 141-43-5 | |
Transitional Limits: | ||
PEL* | 3 ppm(a) | 6 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 3 ppm(a) | 8 mg/m(3)(b) |
STEL(c) | 6 ppm(a) | 15 m/m(3)(b) |
CEILING | - | - |
Skin Designation | - | |
Ethion | CAS NO(f): 563-12-2 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 0.4 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | X | |
2-Ethoxyethanol | CAS NO(f): 110-80-5 | |
Transitional Limits: | ||
PEL* | 200 ppm(a) | 740 mg/m(3)(b) |
Skin Designation | X | |
Final Rule Limits**: | ||
TWA | 200 ppm(a) | 740 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | X | |
2-Ethoxyethyl acetate (Cellosolve acetate) | CAS NO(f): 111-15-9 | |
Transitional Limits: | ||
PEL* | 100 ppm(a) | 540 mg/m(3)(b) |
Skin Designation | X | |
Final Rule Limits**: | ||
TWA | 100 ppm(a) | 540 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | X | |
Ethyl acetate | CAS NO(f): 141-78-6 | |
Transitional Limits: | ||
PEL* | 400 ppm(a) | 1400 mg/m(3)(b) |
Skin Designation | ||
Final Rule Limits**: | ||
TWA | 400 ppm(a) | 1400 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Ethyl acrylate | CAS NO(f): 140-88-5 | |
Transitional Limits: | ||
PEL* | 25 ppm(a) | 100 mg/m(3)(b) |
Skin Designation | X | |
Final Rule Limits**: | ||
TWA | 5 ppm(a) | 20 mg/m(3)(b) |
STEL(c) | 25 ppm(a) | 100 mg/m(3)(b) |
CEILING | - | - |
Skin Designation | X | |
Ethyl alcohol (Ethanol) | CAS NO(f): 64-17-5 | |
Transitional Limits: | ||
PEL* | 1000 ppm(a) | 1900 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 1000 ppm(a) | 1900 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Ethylamine | CAS NO(f): 75-04-7 | |
Transitional Limits: | ||
PEL* | 10 ppm(a) | 18 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 10 ppm(a) | 18 mg/m(3)(b) |
STEL | - | - |
CEILING | - | - |
Skin Designation | - | |
Ethyl amyl ketone (5-Methyl-3-heptanone) | CAS NO(f): 541-85-5 | |
Transitional Limits: | ||
PEL* | 25 ppm(a) | 130 mg/m(3)(b) |
Skin Designation | ||
Final Rule Limits**: | ||
TWA | 25 ppm(a) | 130 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Ethyl benzene | CAS NO(f): 100-41-4 | |
Transitional Limits: | ||
PEL* | 100 ppm(a) | 435 mg/m(3)(b) |
Skin Designation | ||
Final Rule Limits**: | ||
TWA | 100 ppm(a) | 435 mg/m(3)(b) |
STEL(c) | 125 ppm(a) | 545 mg/m(3)(b) |
CEILING | - | - |
Skin Designation | - | |
Ethyl bromide | CAS NO(f): 74-96-4 | |
Transitional Limits: | ||
PEL* | 200 ppm(a) | 890 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 200 ppm(a) | 890 mg/m(3)(b) |
STEL(c) | 250 ppm(a) | 1110 mg/m(3)(b) |
CEILING | - | - |
Skin Designation | - | |
Ethyl butyl ketone (3-Heptanone) | CAS NO(f): 106-35-4 | |
Transitional Limits: | ||
PEL* | 50 ppm(a) | 230 mg/m(3)(b) |
Skin Designation | ||
Final Rule Limits**: | ||
TWA | 50 ppm(a) | 230 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Ethyl chloride | CAS NO(f): 75-003 | |
Transitional Limits: | ||
PEL* | 1000 ppm(a) | 2600 mg/m(3)(b) |
Skin Designation | ||
Final Rule Limits**: | ||
TWA | 1000 ppm(a) | 2600 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Ethyl ether | CAS NO(f): 60-29-7 | |
Transitional Limits: | ||
PEL* | 400 ppm(a) | 1200 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 400 ppm(a) | 1200 mg/m(3)(b) |
STEL(c) | 500 ppm(a) | 1500 mg/m(3)(b) |
CEILING | - | - |
Skin Designation | - | |
Ethyl formate | CAS NO(f): 109-94-4 | |
Transitional Limits: | ||
PEL* | 100 ppm(a) | 300 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 100 ppm(a) | 300 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Ethyl mercaptan | CAS NO(f): 75-08-1 | |
Transitional Limits: | ||
PEL* | (C) 10 ppm(a) | (C) 25 mg/m(3)(b) |
Skin Designation | ||
Final Rule Limits**: | ||
TWA | 0.5 ppm(a) | 1 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Footnote (C) denotes a ceiling limit. | ||
Ethyl silicate | CAS NO(f): 78-10-4 | |
Transitional Limits: | ||
PEL* | 100 ppm(a) | 850 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 10 ppm(a) | 85 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Ethylene chlorohydrin | CAS NO(f): 107-07-3 | |
Transitional Limits: | ||
PEL* | 5 ppm(a) | 16 mg/m(3)(b) |
Skin Designation | X | |
Final Rule Limits**: | ||
TWA | - | - |
STEL(c) | - | - |
CEILING | 1 ppm(a) | 3 mg/m(3)(b) |
Skin Designation | X | |
Ethylenediamine | CAS NO(f): 107-15-3 | |
Transitional Limits: | ||
PEL* | 10 ppm(a) | 25 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 10 ppm(a) | 25 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Ethylene dibromide | CAS NO(f): 106-93-4 | |
Transitional Limits: | ||
PEL* | Tbl. Z-2 | Tbl. Z-2 |
Skin Designation | Tbl. Z-2 | |
Final Rule Limits**: | ||
TWA | ||
STEL(c) | Tbl. Z-2 | Tbl. Z-2 |
CEILING | Tbl. Z-2 | Tbl. Z-2 |
Skin Designation | Tbl. Z-2 | |
Ethylene Dichloride | CAS NO(f): 107-06-2 | |
Transitional Limits: | ||
PEL* | Tbl. Z-2 | Tbl. Z-2 |
Skin Designation | Tbl. Z-2 | |
Final Rule Limits**: | ||
TWA | 1 ppm(a) | 4 mg/m(3)(b) |
STEL(c) | 2 ppm(a) | 8 mg/m(3)(b) |
CEILING | - | - |
Skin Designation | - | |
Ethylene glycol | CAS NO(f): 107-21-1 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | - |
STEL(c) | - | - |
CEILING | 50 ppm(a) | 125 mg/m(3)(b) |
Skin Designation | - | |
Ethylene glycol dinitrate(k) | CAS NO(f): 628-96-6 | |
Transitional Limits: | ||
PEL* | (C) 0.2 ppm(a) | (C) 1 mg/m(3)(b) |
Skin Designation | X | |
Final Rule Limits**: | ||
TWA | - | - |
STEL(c) | - | 0.1 mg/m(3)(b)(k) |
CEILING | - | - |
Skin Designation | X | |
Footnote (C) denotes a ceiling limit. | ||
Footnote (k) The Final Rule Limit STEL of 0.1 mg/m(3) is not in effect as a result of reconsideration for the industrial sector of civilian manufacture and distribution of explosives and propellants for civilian use. The Final rule limits skin designation and the Transitional limits ceiling limit of 1 mg/ m(3) remain in effect for this sector until completion of the reconsideration. | ||
Ethylene glycol methyl acetate; | ||
see Methyl cellosolve accetate | ||
Ethyleneimine; | CAS NO(f): 151-56-4 | |
see 1910.1012 | ||
Ethylene oxide; | CAS NO(f): 75-21-8 | |
see 1910.1047 | ||
Ethylidene chloride; | ||
see 1,1-Dichlorethane | ||
Ethylidene norbornene | CAS NO(f): 16219-75-3 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | - |
STEL(c) | - | - |
CEILING | 5 ppm(a) | 25 mg/m(3)(b) |
Skin Designation | - | |
N-Ethylmorpholine | CAS NO(f): 100-74-3 | |
Transitional Limits: | ||
PEL* | 20 ppm(a) | 94 mg/m(3)(b) |
Skin Designation | X | |
Final Rule Limits**: | ||
TWA | 5 ppm(a) | 23 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | X | |
Fenamiphos | CAS NO(f): 22224-92-6 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 0.1 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | X | |
Fensulfothion (Dasanit) | CAS NO(f): 115-90-2 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 0.1 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Fenthion | CAS NO(f): 55-38-9 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 0.2 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | X | |
Ferbam | CAS NO(f): 14484-64-1 | |
Total Dust | ||
Transitional Limits: | ||
PEL* | - | 15 mg/m(3)(b) |
Skin Designation | ||
Final Rule Limits**: | ||
TWA | - | 10 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Ferrovanadium dust | CAS NO(f): 12604-58-9 | |
Transitional Limits: | ||
PEL* | - | 1 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 1 mg/m(3)(b) |
STEL | - | 3 mg/m(3)(b) |
CEILING | - | - |
Skin Designation | - | |
Fluorides (as F) | CAS NO(f): Varies with Compound | |
Transitional Limits: | ||
PEL* | - | 2.5 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 2.5 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Fluorine | CAS NO(f): 77821-41-4 | |
Transitional Limits: | ||
PEL* | 0.1 ppm(a) | 0.2 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 0.1 ppm(a) | 0.2 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Fluorotrichloro-methane (Trichloro-fluoromethane) | CAS NO(f): 75-69-4 | |
Transitional Limits: | ||
PEL* | 1000 ppm(a) | 5600 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | - |
STEL(c) | - | - |
CEILING | 1000 ppm(a) | 5600 mg/m(3)(b) |
Skin Designation | - | |
Fononfos | CAS NO(f): 944-22-9 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 0.1 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | X | |
* Formaldehyde; | CAS NO(f): 50-00-0 | |
see 1910.1048 | ||
Formamide | CAS NO(f): 75-12-7 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 20 ppm(a) | 30 mg/m(3)(b) |
STEL(c) | 30 ppm(a) | 45 mg/m(3)(b) |
CEILING | - | - |
Skin Designation | - | |
Formic acid | CAS NO(f): 64-18-6 | |
Transitional Limits: | ||
PEL* | 5 ppm(a) | 9 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 5 ppm(a) | 9 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Furfural | CAS NO(f): 98-01-1 | |
Transitional Limits: | ||
PEL* | 5 ppm(a) | 20 mg/m(3)(b) |
Skin Designation | X | |
Final Rule Limits**: | ||
TWA | 2 ppm(a) | 8 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | X | |
Furfuryl alcohol | CAS NO(f): 98-00-0 | |
Transitional Limits: | ||
PEL* | 50 ppm(a) | 200 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 10 ppm(a) | 40 mg/m(3)(b) |
STEL(c) | 15 ppm(a) | 60 mg/m(3)(b) |
CEILING | - | - |
Skin Designation | X | |
Gasoline | CAS NO(f): 8006-61-9 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 300 ppm(a) | 900 mg/m(3)(b) |
STEL(c) | 500 ppm(a) | 1500 mg/m(3)(b) |
CEILING | - | - |
Skin Designation | - | |
Germanium tetrahydride | CAS NO(f): 7782-65-2 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 0.2 ppm(a) | 0.6 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Glutaraldehyde | CAS NO(f): 111-30-8 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | - |
STEL(c) | - | - |
CEILING | 0.2 ppm(a) | 0.8 mg/m(3)(b) |
Skin Designation | - | |
Glycerin (Mist) | CAS NO(f): 56-81-5 | |
Total Dust | ||
Transitional Limits: | ||
PEL* | - | 15 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 10 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | ||
Skin Designation | - | |
Respirable fraction | ||
Transitional Limits: | ||
PEL* | - | 5 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 5 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Glycidol | CAS NO(f): 556-52-5 | |
Transitional Limits: | ||
PEL* | 50 ppm(a) | 150 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 25 ppm(a) | 75 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Glycol monoethyl ether; | ||
see 2-Ethoxyethanol | ||
Grain dust (oat, wheat, barley) | ||
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 10 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Graphite, natural respirable dust | CAS NO(f): 7782-42-5 | |
Transitional Limits: | ||
PEL* | - | Tbl. Z-3 |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 2.5 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Graphite, synthetic | ||
Total Dust | ||
Transitional Limits: | ||
PEL* | - | 15 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 10 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Respirable fraction | ||
Transitional Limits: | ||
PEL* | - | 5 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 5 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Guthion (R); | ||
see Azinphos methyl | ||
Gypsum | CAS NO(f): 13397-24-5 | |
Total Dust | ||
Transitional Limits: | ||
PEL* | - | 15 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 15 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Respirable fraction | ||
Transitional Limits: | ||
PEL* | - | 5 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 5 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Hafnium | CAS NO(f): 7440-58-6 | |
Transitional Limits: | ||
PEL* | - | 0.5 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 0.5 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Heptachlor | CAS NO(f): 76-44-8 | |
Transitional Limits: | ||
PEL* | - | 0.5 mg/m(3)(b) |
Skin Designation | X | |
Final Rule Limits**: | ||
TWA | - | 0.5 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | X | |
Heptane (n-Heptane) | CAS NO(f): 142-82-5 | |
Transitional Limits: | ||
PEL* | 500 ppm(a) | 2000 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 400 ppm(a) | 1600 mg/m(3)(b) |
STEL(c) | 500 ppm(a) | 2000 mg/m(3)(b) |
CEILING | - | - |
Skin Designation | - | |
Hexachlorobutadiene | CAS NO(f): 87-68-3 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 0.02 ppm(a) | 0.24 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Hexachlorocyclo-pentadiene | CAS NO(f): 77-47-4 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 0.01 ppm(a) | 0.1 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Hexachloroethane | CAS NO(f); 67-72-1 | |
Transitional Limits: | ||
PEL* | 1 ppm(a) | 10 mg/m(3)(b) |
Skin Designation | X | |
Final Rule Limits**: | ||
TWA | 1 ppm(a) | 10 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | X | |
Hexachloronaphthalene | CAS NO(f): 1335-87-1 | |
Transitional Limits: | ||
PEL* | - | 0.2 mg/m(3)(b) |
Skin Designation | X | |
Final Rule Limits**: | ||
TWA | - | 0.2 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | X | |
Hexafluoracetone | CAS NO(f): 684-16-2 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 0.1 ppm(a) | 0.7 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | X | |
n-Hexane | CAS NO(f): 110-54-3 | |
Transitional Limits: | ||
PEL* | 500 ppm(a) | 1800 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 50 ppm(a) | 180 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Hexane isomers | CAS NO(f): Varies With Compound | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 500 ppm(a) | 1800 mg/m(3)(b) |
STEL(c) | 1000 ppm(a) | 3600 mg/m(3)(b) |
CEILING | - | - |
Skin Designation | - | |
2-Hexanone (Methyl n-butyl ketone) | CAS NO(f): 591-78-6 | |
Transitional Limits: | ||
PEL* | 100 ppm(a) | 410 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 5 ppm(a) | 20 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Hexone (Methyl isobutyl ketone) | CAS NO(f): 108-10-1 | |
Transitional Limits: | ||
PEL* | 100 ppm(a) | 410 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 50 ppm(a) | 205 mg/m(3)(b) |
STEL(c) | 75 ppm(a) | 300 mg/m(3)(b) |
CEILING | - | - |
Skin Designation | - | |
sec-Hexyl acetate | CAS NO(f): 108-84-9 | |
Transitional Limits: | ||
PEL* | 50 ppm(a) | 300 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 50 ppm(a) | 300 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Hexylene glycol | CAS NO(f): 107-41-5 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | - |
STEL(c) | - | - |
CEILING | 25 ppm(a) | 125 mg/m(3)(b) |
Skin Designation | - | |
Hydrazine | CAS NO(f): 302-01-2 | |
Transitional Limits: | ||
PEL* | 1 ppm(a) | 1.3 mg/m(3)(b) |
Skin Designation | X | |
Final Rule Limits**: | ||
TWA | 0.1 ppm(a) | 0.1 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | X | |
Hydrogenated terphenyls | CAS NO(f): 61788-32-7 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 0.5 ppm(a) | 5 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Hydrogen bromide | CAS NO(f): 10035-10-6 | |
Transitional Limits: | ||
PEL* | 3 ppm(a) | 10 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | - |
STEL(c) | - | - |
CEILING | 3 mg/m(3)(b) | 10 mg/m(3)(b) |
Skin Designation | - | |
Hydrogen chloride | CAS NO(f): 7647-01-0 | |
Transitional Limits: | ||
PEL* | (C) 5 ppm(a) | (C) 7 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | - |
STEL(c) | - | - |
CEILING | 5 ppm(a) | 7 mg/m(3)(b) |
Skin Designation | - | |
Footnote (C) denotes a ceiling limit. | ||
Hydrogen cyanide | CAS NO(f): 74-90-8 | |
Transitional Limits: | ||
PEL* | 10 ppm(a) | 11 mg/m(3)(b) |
Skin Designation | X | |
Final Rule Limits**: | ||
TWA | - | - |
STEL(c) | 4.7 ppm(a) | 5 mg/m(3)(b) |
CEILING | - | - |
Skin Designation | X | |
Hydrogen fluoride (as F) | CAS NO(f): 7664-39-3 | |
Transitional Limits: | ||
PEL* | Tbl. Z-2 | |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 3 ppm(a) | - |
STEL(c) | 6 ppm(a) | - |
CEILING | - | - |
Skin Designation | - | |
Hydrogen peroxide | CAS NO(f): 7722-84-1 | |
Transitional Limits: | ||
PEL* | 1 ppm(a) | 1.4 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 1 ppm(a) | 1.4 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Hydrogen selenide (as Se) | CAS NO(f): 7783-07-5 | |
Transitional Limits: | ||
PEL* | 0.05 ppm(a) | 0.2 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 0.05 ppm(a) | 0.2 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Hydrogen sulfide | CAS NO(f): 7783-06-4 | |
Transitional Limits: | ||
PEL* | Tbl. Z-2 | Tbl. Z-2 |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 10 ppm(a) | 14 mg/m(3)(b) |
STEL(c) | 15 ppm(a) | 21 mg/m(3)(b) |
CEILING | - | - |
Skin Designation | - | |
Hydroquinone | CAS NO(f): 123-31-9 | |
Transitional Limits: | ||
PEL* | - | 2 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 2 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
2-Hydroxypropyl acrylate | CAS NO(f): 999-61-1 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 0.5 ppm(a) | 3 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | X | |
Indene | CAS NO(f): 95-13-6 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 10 ppm(a) | 45 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Indium and compounds (as in) | CAS NO(f): 7440-74-6 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 0.1 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Iodine | CAS NO(f): 7553-56-2 | |
Transitional Limits: | ||
PEL* | (C) 0.1 ppm(a) | (C) 1 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | - |
STEL(c) | - | - |
CEILING | 0.1 ppm(a) | 1 mg/m(3)(b) |
Skin Designation | - | |
Footnote (C) denotes a ceiling limit. | ||
Iodoform | CAS NO(f): 75-47-8 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 0.6 ppm(a) | 10 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Iron oxide fume (as Fe) | CAS NO(f): 1309-37-1 | |
Total Particulate | ||
Transitional Limits: | ||
PEL* | - | 10 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 10 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Iron pentacarbonyl (as Fe) | CAS NO(f): 13463-40-6 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 0.1 ppm(a) | 0.8 mg/m(3)(b) |
STEL(c) | 0.2 ppm(a) | 1.6 mg/m(3)(b) |
CEILING | - | - |
Skin Designation | - | |
Iron salts (Soluable) (as Fe) | CAS NO(f): Varies With Compound | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 1 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Isomyl acetate | CAS NO(f): 123-92-2 | |
Transitional Limits: | ||
PEL* | 100 ppm(a) | 525 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 100 ppm(a) | 525 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Isomyl alcohol (primary and secondary) | CAS NO(f): 123-51-3 | |
Transitional Limits: | ||
PEL* | 100 ppm(a) | 360 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 100 ppm(a) | 360 mg/m(3)(b) |
STEL(c) | 125 ppm(a) | 450 mg/m(3)(b) |
CEILING | - | - |
Skin Designation | - | |
Isobutyl acetate | CAS NO(f): 110-19-0 | |
Transitional Limits: | ||
PEL* | 150 ppm(a) | 700 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 150 ppm(a) | 700 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Isobutyl alcohol | CAS NO(f): 78-83-1 | |
Transitional Limits: | ||
PEL* | 100 ppm(a) | 300 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 50 ppm(a) | 150 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Isooctyl alcohol | CAS NO(f): 26952-21-6 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | ||
Final Rule Limits**: | ||
TWA | 50 ppm(a) | 270 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | X | |
Isophorone | CAS NO(f): 78-59-1 | |
Transitional Limits: | ||
PEL* | 25 ppm(a) | 140 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 4 ppm(a) | 23 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Isophorone diisocyanate | CAS NO(f): 4098-71-9 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 0.005 ppm(a) | - |
STEL(c) | 0.02 ppm(a) | - |
CEILING | - | - |
Skin Designation | X | |
2-Isopropoxyethanol | CAS NO(f): 109-59-1 | |
Transitional Limits: | ||
PEL* | ||
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 25 ppm(a) | 105 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Isopropyl acetate | CAS NO(f): 108-21-4 | |
Transitional Limits: | ||
PEL* | 250 ppm(a) | 950 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 250 ppm(a) | 950 mg/m(3)(b) |
STEL(c) | 310 ppm(a) | 1185 mg/m(3)(b) |
CEILING | - | - |
Skin Designation | - | |
Isopropyl alcohol | CAS NO(f): 67-63-0 | |
Transitional Limits: | ||
PEL* | 400 ppm(a) | 980 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 400 ppm(a) | 980 mg/m(3)(b) |
STEL(c) | 500 ppm(a) | 1225 mg/m(3)(b) |
CEILING | - | - |
Skin Designation | - | |
Isopropylamine | CAS NO(f): 75-31-0 | |
Transitional Limits: | ||
PEL* | 5 ppm(a) | 12 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 5 ppm(a) | 12 mg/m(3)(b) |
STEL(c) | 10 ppm(a) | 24 mg/m(3)(b) |
CEILING | - | - |
Skin Designation | - | |
N-Isopropylaniline | CAS NO(f): 768-52-5 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 2 ppm(a) | 10 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | X | |
Isopropyl ether | CAS NO(f): 108-20-3 | |
Transitional Limits: | ||
PEL* | 500 ppm(a) | 2100 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 500 ppm(a) | 2100 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Isopropyl glycidyl ether (IGE) | CAS NO(f): 4016-14-2 | |
Transitional Limits: | ||
PEL* | 50 ppm(a) | 240 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 50 ppm(a) | 240 mg/m(3)(b) |
STEL(c) | 75 ppm(a) | 360 mg/m(3)(b) |
CEILING | - | - |
Skin Designation | - | |
Kaolin | ||
Total Dust | ||
Transitional Limits: | ||
PEL* | - | 15 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 10 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Respirable fraction | ||
Transitional Limits: | ||
PEL* | - | 5 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 5 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Ketene | CAS NO(f): 463-51-4 | |
Transitional Limits: | ||
PEL* | 0.5 ppm(a) | 0.9 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 0.5 ppm(a) | 0.9 mg/m(3)(b) |
STEL(c) | 1.5 ppm(a) | 3 mg/m(3)(b) |
CEILING | - | - |
Skin Designation | - | |
Lead inorganic (as Pb) | CAS NO(f): 7439-92-1 | |
see 1910.1025 | ||
Limestone | CAS NO(f): 1317-65-3 | |
Total Dust | ||
Transitional Limits: | ||
PEL* | - | 15 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 15 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Respirable fraction | ||
Transitional Limits: | ||
PEL* | - | 5 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 5 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Lindane | CAS NO(f): 58-89-9 | |
Transitional Limits: | ||
PEL* | - | 0.5 mg/m(3)(b) |
Skin Designation | X | |
Final Rule Limits**: | ||
TWA | - | 0.5 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | X | |
Lithium hydride | CAS NO(f): 7580-67-8 | |
Transitional Limits: | ||
PEL* | - | 0.025 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 0.025 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
L.P.G. (Liquified petroleum gas) | CAS NO(f): 68476-85-7 | |
Transitional Limits: | ||
PEL* | 1000 ppm(a) | 1800 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 1000 ppm(a) | 1800 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Magnesite | CAS NO(f): 546-93-0 | |
Total Dust | ||
Transitional Limits: | ||
PEL* | - | 15 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 15 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Respirable fraction | ||
Transitional Limits: | ||
PEL* | 5 mg/m(3)(b) | |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 5 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Magnesium oxide fume | CAS NO(f): 1309-48-4 | |
Total Particulate | ||
Transitional Limits: | ||
PEL* | - | 15 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 10 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Malathion | CAS NO(f): 121-75-5 | |
Total Dust | ||
Transitional Limits: | ||
PEL* | - | 15 mg/m(3)(b) |
Skin Designation | X | |
Final Rule Limits**: | ||
TWA | - | 10 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | X | |
Maleic anhydride | CAS NO(f): 108-31-6 | |
Transitional Limits: | ||
PEL* | 0.25 ppm(a) | 1 mg/m(3)(b) |
Final Rule Limits**: | ||
TWA | 0.25 ppm(a) | 1 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Manganese compounds (as Mn) | CAS NO(f): 7439-96-5 | |
Transitional Limits: | ||
PEL* | - | (C) 5 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | - |
STEL(c) | - | - |
CEILING | - | 5 mg/m(3)(b) |
Skin Designation | - | |
Footnote (C) denotes a ceiling limit. | ||
Manganese fume (as Mn) | CAS NO(f): 7439-96-5 | |
Transitional Limits: | ||
PEL* | - | (C) 5 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 1 mg/m(3)(b) |
STEL(c) | - | 3 mg/m(3)(b) |
CEILING | - | - |
Skin Designation | - | |
Footnote (C) denotes a ceiling limit. | ||
Manganese cyclopetadienyl tricarbonyl (as Mn) | CAS NO(f): 12079-65-1 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 0.1 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | X | |
Manganese tetroxide (as Mn) | CAS NO(f): 1317-35-7 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 1 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Marble | CAS NO(f): 1317-65-3 | |
Total Dust | ||
Transitional Limits: | ||
PEL* | - | 15 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 15 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Respirable fraction | ||
Transitional Limits: | ||
PEL* | - | 5 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 5 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Mercury (aryl and inorganic) (as Hg) | CAS NO(f): 7439-97-6 | |
Transitional Limits: | ||
PEL* | Tbl. Z-2 | |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | - |
STEL(c) | - | - |
CEILING | - | 0.1 mg/m(3)(b) |
Skin Designation | X | |
Mercury (organo) alkyl compounds (as Hg) | CAS NO(f): 7439-97-6 | |
Transitional Limits: | ||
PEL* | Tbl. Z-2 | |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 0.01 mg/m(3)(b) |
STEL(c) | - | 0.03 mg/m(3)(b) |
CEILING | - | - |
Skin Designation | X | |
Mercury (vapor) (as Hg) | CAS NO(f): 7439-97-6 | |
Transitional Limits: | ||
PEL* | Tbl. Z-2 | |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 0.05 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | X | |
Mesityl oxide | CAS NO(f): 141-79-7 | |
Transitional Limits: | ||
PEL* | 25 ppm(a) | 100 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 15 ppm(a) | 60 mg/m(3)(b) |
STEL(c) | 25 ppm(a) | 100 mg/m(3)(b) |
CEILING | - | - |
Skin Designation | X | |
Methacrylic acid | CAS NO(f): 79-41-4 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 20 ppm(a) | 70 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | X | |
Methanethiol; | ||
see Methyl mercaptan | ||
Methomyl (Lannate) | CAS NO(f): 16752-77-5 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 2.5 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Methoxychlor | CAS NO(f): 72-43-5 | |
Total Dust | ||
Transitional Limits: | ||
PEL* | - | 15 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 10 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
2-Methoxyethanol; | ||
see Methyl cellosolve | ||
4-Methoxyphenol | CAS NO(f): 150-76-5 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 5 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Methyl acetate | CAS NO(f): 79-20-9 | |
Transitional Limits: | ||
PEL* | 200 ppm(a) | 610 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 200 ppm(a) | 610 mg/m(3)(b) |
STEL(c) | 250 ppm(a) | 760 mg/m(3)(b) |
CEILING | - | - |
Skin Designation | - | |
Methyl acetylene (Propyne) | CAS NO(f): 74-99-7 | |
Transitional Limits: | ||
PEL* | 1000 ppm(a) | 1650 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 1000 ppm(a) | 1650 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Methyl acetylene propadiene mixture (MAPP) | ||
Transitional Limits: | ||
PEL* | 1000 ppm(a) | 1800 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 1000 ppm(a) | 1800 mg/m(3)(b) |
STEL(c) | 1250 ppm(a) | 2250 mg/m(3)(b) |
CEILING | - | - |
Skin Designation | - | |
Methyl acrylate | CAS NO(f): 96-33-3 | |
Transitional Limits: | ||
PEL* | 10 ppm(a) | 35 mg/m(3)(b) |
Skin Designation | X | |
Final Rule Limits**: | ||
TWA | 10 ppm(a) | 35 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | X | |
Methylacrylonitrile | CAS NO(f): 126-98-7 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 1 ppm(a) | 3 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | X | |
Methyial (Dimethoxy-methane) | CAS NO(f): 109-87-5 | |
Transitional Limits: | ||
PEL* | 1000 ppm(a) | 3100 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 1000 ppm(a) | 3100 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Methyl alcohol | CAS NO(f): 67-56-1 | |
Transitional Limits: | ||
PEL* | 200 ppm(a) | 260 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 200 ppm(a) | 260 mg/m(3)(b) |
STEL(c) | 250 ppm(a) | 325 mg/m(3)(b) |
CEILING | - | - |
Skin Designation | X | |
Methylamine | CAS NO(f): 74-89-5 | |
Transitional Limits: | ||
PEL* | 10 ppm(a) | 12 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 10 ppm(a) | 12 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Methyl amyl alcohol; | ||
see Methyl Isobutyl carbinol | ||
Methyl n-amyl ketone | CAS NO(f): 110-43-0 | |
Transitional Limits: | ||
PEL* | 100 ppm(a) | 465 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 100 ppm(a) | 465 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Methyl bromide | CAS NO(f): 74-83-9 | |
Transitional Limits: | ||
PEL* | (C) 20 ppm(a) | (C) 80 mg/m(3)(b) |
Skin Designation | X | |
Final Rule Limits**: | ||
TWA | 5 ppm(a) | 20 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | X | |
Footnote (C) denotes a ceiling limit. | ||
Methyl butyl ketone; | ||
see 2-Hexanone | ||
Methyl cellosolve (2-Methoxyethanol) | CAS NO(f): 109-86-4 | |
Transitional Limits: | ||
PEL* | 25 ppm(a) | 80 mg/m(3)(b) |
Skin Designation | X | |
Final Rule Limits**: | ||
TWA | 25 ppm(a) | 80 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | X | |
Methyl cellosolve acetate (2-Methoxyethyl acetate) | CAS NO(f): 110-49-6 | |
Transitional Limits: | ||
PEL* | 25 ppm(a) | 120 mg/m(3)(b) |
Skin Designation | X | |
Final Rule Limits**: | ||
TWA | 25 ppm(a) | 120 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | X | |
Methyl chloride | CAS NO(f): 74-87-3 | |
Transitional Limits: | ||
PEL* | Tbl. Z-2 | |
Final Rule Limits**: | ||
TWA | 50 ppm(a) | 105 mg/m(3)(b) |
STEL(c) | 100 ppm(a) | 210 mg/m(3)(b) |
CEILING | - | |
Skin Designation | ||
Methyl chloroform (1,1,1-Trichloroethane) | CAS NO(f): 71-55-6 | |
Transitional Limits: | ||
PEL* | 350 ppm(a) | 1900 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 350 ppm(a) | 1900 mg/m(3)(b) |
STEL(c) | 450 ppm(a) | 2450 mg/m(3)(b) |
CEILING | - | - |
Skin Designation | - | |
Methyl 2-cyanoacrylate | CAS NO(f): 137-05-3 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 2 ppm(a) | 8 mg/m(3)(b) |
STEL(c) | 4 ppm(a) | 16 mg/m(3)(b) |
CEILING | - | - |
Skin Designation | - | |
Methylcyclohexane | CAS NO(f): 108-87-2 | |
Transitional Limits: | ||
PEL* | 500 ppm(a) | 2000 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 400 ppm(a) | 1600 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Methylcyclohexanol | CAS NO(f): 25639-42-3 | |
Transitional Limits: | ||
PEL* | 100 ppm(a) | 470 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 50 ppm(a) | 235 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
o-Methylcyclohexanone | CAS NO(f): 583-60-8 | |
Transitional Limits: | ||
PEL* | 100 ppm(a) | 460 mg/m(3)(b) |
Skin Designation | X | |
Final Rule Limits**: | ||
TWA | 50 ppm(a) | 230 mg/m(3)(b) |
STEL(c) | 75 ppm(a) | 345 mg/m(3)(b) |
CEILING | - | - |
Skin Designation | X | |
Methylcyclopentiadienyl manganese tricarbonyl (as Mn) | CAS NO(f): 12108-13-3 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 0.2 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | X | |
Methyl demeton | CAS NO(f): 8022-00-2 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 0.5 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | X | |
4,4′-Methylene bis (2-chloroaniline) (MBOCA) | CAS NO(f): 101-14-4 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 0.02 ppm(a) | 0.22 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | |
Skin Designation | X | |
Methylene bis (4-cyclohexylisocyanate) | CAS NO(f): 5124-30-1 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | - |
STEL(c) | - | - |
CEILING | 0.01 ppm(a) | 0.11 mg/m(3)(b) |
Skin Designation | X | |
Methylene chloride | CAS NO(f): 75-09-2 | |
Transitional Limits: | ||
PEL* | Tbl. Z-2 | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | Tbl. Z-2 | - |
STEL(c) | Tbl. Z-2 | - |
CEILING | Tbl. Z-2 | - |
Skin Designation | - | |
Methyl ethyl ketone peroxide (MEKP) | CAS NO(f): 1338-23-4 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | - |
STEL(c) | - | - |
CEILING | 0.7 ppm(a) | 5 mg/m(3)(b) |
Skin Designation | - | |
Methyl formate | CAS NO(f): 107-31-3 | |
Transitional Limits: | ||
PEL* | 100 ppm(a) | 250 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 100 ppm(a) | 250 mg/m(3)(b) |
STEL(c) | 150 ppm(a) | 375 mg/m(3)(b) |
CEILING | - | - |
Skin Designation | - | |
Methyl hydrazine (Monomethyl hydrazine) | CAS NO(f): 60-34-4 | |
Transitional Limits: | ||
PEL* | (C) 0.2 ppm(a) | (C) 0.35 mg/m(3)(b) |
Skin Designation | X | |
Final Rule Limits**: | ||
TWA | - | - |
STEL(c) | - | - |
CEILING | 0.2 ppm(a) | 0.35 mg/m(3)(b) |
Skin Designation | X | |
Footnote (C) denotes a ceiling limit. | ||
Methyl iodide | CAS NO(f): 74-88-4 | |
Transitional Limits: | ||
PEL* | 5 ppm(a) | 28 mg/m(3)(b) |
Skin Designation | X | |
Final Rule Limits**: | ||
TWA | 2 ppm(a) | 10 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | X | |
Methyl isoamyl ketone | CAS NO(f): 110-12-3 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 50 ppm(a) | 240 mg/m(3)(b) |
STEL(c) | - | |
CEILING | - | |
Skin Designation | - | |
Methyl isobutyl carbinol | CAS NO(f): 108-11-2 | |
Transitional Limits: | ||
PEL* | 25 ppm(a) | 100 mg/m(3)(b) |
Skin Designation | X | |
Final Rule Limits**: | ||
TWA | 25 ppm(a) | 100 mg/m(3)(b) |
STEL(c) | 40 ppm(a) | 165 mg/m(3)(b) |
CEILING | - | - |
Skin Designation | X | |
Methyl isobutyl ketone; see Hexone | ||
Methyl isocyanate | CAS NO(f): 624-83-9 | |
Transitional Limits: | ||
PEL* | 0.02 ppm(a) | 0.05 mg/m(3)(b) |
Skin Designation | X | |
Final Rule Limits**: | ||
TWA | 0.02 ppm(a) | 0.05 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | X | |
Methyl isopropyl ketone | CAS NO(f): 563-80-4 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 200 ppm(a) | 705 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Methyl mercaptan | CAS NO(f): 74-93-1 | |
Transitional Limits: | ||
PEL* | (C) 10 ppm(a) | (C) 20 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 0.5 ppm(a) | 1 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Footnote (C) denotes a ceiling limit. | ||
Methyl methacrylate | CAS NO(f): 80-62-2 | |
Transitional Limits: | ||
PEL* | 100 ppm(a) | 410 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 100 ppm(a) | 410 mg/m(3)(b) |
STEL(c) | - | |
CEILING | - | - |
Skin Designation | - | |
Methyl parathion | CAS NO(f): 298-00-0 | |
Transitional Limits: | ||
PEL* | - | |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | |
STEL(c) | - | |
CEILING | - | |
Skin Designation | X | |
Methyl propyl ketone; | ||
see 2-Pentanone | ||
Methyl silicate | CAS NO(f): 681-84-5 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 1 ppm(a) | 6 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
alpha-Methyl styrene | CAS NO(f): 98-83-9 | |
Transitional Limits: | ||
PEL* | (C) 100 ppm(a) | (C) 480 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 50 ppm(a) | 240 mg/m(3)(b) |
STEL(c) | 100 ppm(a) | 485 mg/m(3)(b) |
CEILING | - | - |
Skin Designation | - | |
Footnote (C) denotes a ceiling limit. | ||
Methylene bisphenyl isocyanate (MDI) | CAS NO(f): 101-68-8 | |
Transitional Limits: | ||
PEL* | (C) 0.02 ppm(a) | (C) 0.2 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | - |
STEL(c) | - | - |
CEILING | 0.02 ppm(a) | 0.2 mg/m(3)(b) |
Skin Designation | - | |
Footnote (C) denotes a ceiling limit. | ||
Metribuzin | CAS NO(f): 21087-64-9 | |
Transitional Limits: | ||
PEL* | - | |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 5 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Mica; | ||
see Silicates | ||
Molybdenum (as Mo) | CAS NO(f): 7439-98-7 | |
Soluble compounds | ||
Transitional Limits: | ||
PEL* | - | 5 mg/m(3)(b) |
Skin Designation | ||
Final Rule Limits**: | ||
TWA | - | 5 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Insoluble Compounds-total dust | ||
Transitional Limits: | ||
PEL* | - | 15 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 10 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Monocrotophos (Azodrin (R)) | CAS NO(f): 6923-22-4 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 0.25 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Monomethyl aniline | CAS NO(f): 100-61-8 | |
Transitional Limits: | ||
PEL* | 2 ppm(a) | 9 mg/m(3)(b) |
Skin Designation | X | |
Final Rule Limits**: | ||
TWA | 0.5 ppm(a) | 2 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | X | |
Morpholine | CAS NO(f): 110-91-8 | |
Transitional Limits: | ||
PEL* | 20 ppm(a) | 70 mg/m(3)(b) |
Skin Designation | X | |
Final Rule Limits**: | ||
TWA | 20 ppm(a) | 70 mg/m(3)(b) |
STEL(c) | 30 ppm(a) | 105 mg/m(3)(b) |
CEILING | - | - |
Skin Designation | X | |
Naphtha (Coal tar) | CAS NO(f): 8030-30-6 | |
Transitional Limits: | ||
PEL* | 100 ppm(a) | 400 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 100 ppm(a) | 400 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Naphthalene | CAS NO(f): 91-20-3 | |
Transitional Limits: | ||
PEL* | 10 ppm(a) | 50 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 10 ppm(a) | 50 mg/m(3)(b) |
STEL(c) | 15 ppm(a) | 75 mg/m(3)(b) |
CEILING | - | - |
Skin Designation | - | |
alpha-Naphthylamine; | CAS NO(f): 134-32-7 | |
see 1910.1004 | ||
beta-Naphthylamine; | CAS NO(f): 91-59-8 | |
see 1910.1009 | ||
Nickel carbonyl (as Ni) | CAS NO(f): 13463-39-3 | |
Transitional Limits: | ||
PEL* | 0.001 ppm(a) | 0.007 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 0.001 ppm(a) | 0.007 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Nickel, metal and insoluble compounds (as Ni) | CAS NO(f): 7440-02-0 | |
Transitional Limits: | ||
PEL* | - | 1 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 1 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Nickel, insoluble compounds (as Ni) | CAS NO(f): 7440-02-0 | |
Transitional Limits: | ||
PEL* | - | 1 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 0.1 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Nicotine | CAS NO(f): 54-11-5 | |
Transitional Limits: | ||
PEL* | - | 0.5 mg/m(3)(b) |
Skin Designation | X | |
Final Rule Limits**: | ||
TWA | - | 0.5 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | X | |
Nitric acid | CAS NO(f): 7697-37-2 | |
Transitional Limits: | ||
PEL* | 2 ppm(a) | 5 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 2 ppm(a) | 5 mg/m(3)(b) |
STEL(c) | 4 ppm(a) | 10 mg/m(3)(b) |
CEILING | - | - |
Skin Designation | - | |
Nitric oxide | CAS NO(f): 10102-43-9 | |
Transitional Limits: | ||
PEL* | 25 ppm(a) | 30 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 25 ppm(a) | 30 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
p-Nitroaniline | CAS NO(f): 100-01-6 | |
Transitional Limits: | ||
PEL* | 1 ppm(a) | 6 mg/m(3)(b) |
Skin Designation | X | |
Final Rule Limits**: | ||
TWA | - | 3 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | X | |
Nitrobenzene | CAS NO(f): 98-95-3 | |
Transitional Limits: | ||
PEL* | 1 ppm(a) | 5 mg/m(3)(b) |
Skin Designation | X | |
Final Rule Limits**: | ||
TWA | 1 ppm(a) | 5 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | |
Skin Designation | X | |
p-Nitrochlorobenzene | CAS NO(f): 100-00-5 | |
Transitional Limits: | ||
PEL* | - | 1 mg/m(3)(b) |
Skin Designation | X | |
Final Rule Limits**: | ||
TWA | - | 1 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | |
Skin Designation | X | |
4-Nitrodiphenyl; | CAS NO(f): 92-93-3 | |
see 1910.1003 | ||
Nitroethane | CAS NO(f): 79-24-3 | |
Transitional Limits: | ||
PEL* | 100 ppm(a) | 310 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 100 ppm(a) | 310 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Nitrogen dioxide | CAS NO(f): 10102-44-0 | |
Transitional Limits: | ||
PEL* | (C) 5 ppm(a) | (C) 9 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 1 ppm(a) | 1.8 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Footnote (C) denotes a ceiling limit. | ||
Nitrogen trifluoride | CAS NO(f): 7783-54-1 | |
Transitional Limits: | ||
PEL* | 10 ppm(a) | 29 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 10 ppm(a) | 29 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Nitroglycerin(1) | CAS NO(f): 55-63-0 | |
Transitional Limits: | ||
PEL* | (C) 0.2 ppm(a) | (C) 2 mg/m(3)(b) |
Skin Designation | X | |
Final Rule Limits**: | ||
TWA | - | - |
STEL(c) | - | 0.1 mg/m(3)(b)(l) |
CEILING | - | - |
Skin Designation | X | |
Footnote (C) denotes a ceiling limit. | ||
Footnote (1) The Final Rule Limit STEL of 0.1 mg/m(3) is not in effect as a result of reconsideration for the industrial sector of civilian manufacture and distribution of explosives and propellants for civilian use. The Final rule limits skin designation and the Transitional limits ceiling limit of 2 mg/m(3) remains in effect for this sector until completion of the reconsideration. | ||
Nitromethane | CAS NO(f): 75-52-5 | |
Transitional Limits: | ||
PEL* | 100 ppm(a) | 250 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 100 ppm(a) | 250 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
1-Nitropropane | CAS NO(f): 108-03-2 | |
Transitional Limits: | ||
PEL* | 25 ppm(a) | 90 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 25 ppm(a) | 90 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
2-Nitropropane | CAS NO(f): 79-46-9 | |
Transitional Limits: | ||
PEL* | 25 ppm(a) | 90 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 10 ppm(a) | 35 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
N-Nitrosodimethylamine; | CAS NO(f): 62-79-9 | |
see 1910.1016 | ||
Nitrotoluene | ||
CAS NO(f): o-isomer 88-72-2; m-isomer 99-08-1; p-isomer 99-99-0 | ||
Transitional Limits: | ||
PEL* | 5 ppm(a) | 30 mg/m(3)(b) |
Skin Designation | X | |
Final Rule Limits**: | ||
TWA | 2 ppm(a) | 11 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | X | |
Nitrotrichloromethane; see Chloropicrin | ||
Nonane | CAS NO(f): 111-84-2 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 200 ppm(a) | 1050 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Octachloronaphthalene | CAS NO(f): 2234-13-1 | |
Transitional Limits: | ||
PEL* | - | 0.1 mg/m(3)(b) |
Skin Designation | X | |
Final Rule Limits**: | ||
TWA | - | 0.1 mg/m(3)(b) |
STEL(c) | - | 0.3 mg/m(3)(b) |
CEILING | - | - |
Skin Designation | X | |
Octane | CAS NO(f): 111-65-9 | |
Transitional Limits: | ||
PEL* | 500 ppm(a) | 2350 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 300 ppm(a) | 1450 mg/m(3)(b) |
STEL(c) | 375 ppm(a) | 1800 mg/m(3)(b) |
CEILING | - | - |
Skin Designation | - | |
Oil mist, mineral | CAS NO(f): 8012-95-1 | |
Transitional Limits: | ||
PEL* | - | 5 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 5 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Osmium tetroxide (as Os) | CAS NO(f): 20816-12-0 | |
Transitional Limits: | ||
PEL* | - | 0.002 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 0.0002 ppm(a) | 0.002 mg/m(3)(b) |
STEL(c) | 0.0006 ppm(a) | 0.006 mg/m(3)(b) |
CEILING | - | - |
Skin Designation | - | |
Oxalic acid | CAS NO(f): 144-62-7 | |
Transitional Limits: | ||
PEL* | - | 1 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 1 mg/m(3)(b) |
STEL(c) | - | 2 mg/m(3)(b) |
CEILING | - | - |
Skin Designation | - | |
Oxygen difluoride | CAS NO(f): 7783-41-7 | |
Transitional Limits: | ||
PEL* | 0.05 ppm(a) | 0.1 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | - |
STEL(c) | - | - |
CEILING | 0.05 ppm(a) | 0.1 mg/m(3)(b) |
Skin Designation | - | |
Ozone | CAS NO(f): 10028-15-6 | |
Transitional Limits: | ||
PEL* | 0.1 ppm(a) | 0.2 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 0.1 ppm(a) | 0.2 mg/m(3)(b) |
STEL(c) | 0.3 ppm(a) | 0.6 mg/m(3)(b) |
CEILING | - | - |
Skin Designation | - | |
Paraffin wax fume | CAS NO(f): 8002-74-2 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 2 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Paraquat, respirable dust | CAS NO(f): 1910-42-5; 2074-50-2; 4685-14-7 | |
Transitional Limits: | ||
PEL* | - | 0.5 mg/m(3)(b) |
Skin Designation | X | |
Final Rule Limits**: | ||
TWA | - | 0.1 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | X | |
Parathion | CAS NO(f): 56-38-2 | |
Transitional Limits: | ||
PEL* | - | 0.1 mg/m(3)(b) |
Skin Designation | X | |
Final Rule Limits**: | ||
TWA | - | 0.1 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | X | |
Particulates not otherwise regulated | ||
Total Dust | ||
Transitional Limits: | ||
PEL* | - | 15 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 15 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Respirable fraction | ||
Transitional Limits: | ||
PEL* | - | 5 mg/m(3)(b) |
Skin Designation | ||
Final Rule Limits**: | ||
TWA | - | 5 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | |
Skin Designation | - | |
Pentaborane | CAS NO(f): 19624-22-7 | |
Transitional Limits: | ||
PEL* | 0.005 ppm(a) | 0.01 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 0.005 ppm(a) | 0.01 mg/m(3)(b) |
STEL(c) | 0.015 ppm(a) | 0.03 mg/m(3)(b) |
CEILING | - | - |
Skin Designation | - | |
Pentachloronaphthalene | CAS NO(f): 1321-64-8 | |
Transitional Limits: | ||
PEL* | - | 0.5 mg/m(3)(b) |
Skin Designation | X | |
Final Rule Limits**: | ||
TWA | - | 0.5 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | X | |
Pentachlorophenol | CAS NO(f): 87-86-5 | |
Transitional Limits: | ||
PEL* | - | 0.5 mg/m(3)(b) |
Skin Designation | X | |
Final Rule Limits**: | ||
TWA | - | 0.5 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | X | |
Pentaerythritol | CAS NO(f): 115-77-5 | |
Total Dust | ||
Transitional Limits: | ||
PEL* | - | 15 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 10 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Respirable fraction | ||
Transitional Limits: | ||
PEL* | - | 5 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 5 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Pentane | CAS NO(f): 109-66-0 | |
Transitional Limits: | ||
PEL* | 1000 ppm(a) | 2950 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 600 ppm(a) | 1800 mg/m(3)(b) |
STEL(c) | 750 ppm(a) | 2250 mg/m(3)(b) |
CEILING | - | - |
Skin Designation | - | |
2-Pentanone (Methyl propyl ketone) | CAS NO(f): 107-87-9 | |
Transitional Limits: | ||
PEL* | 200 ppm(a) | 700 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 200 ppm(a) | 700 mg/m(3)(b) |
STEL(c) | 250 ppm(a) | 875 mg/m(3)(b) |
CEILING | - | - |
Skin Designation | - | |
Pentachloronaphthalene (Tetrachloroethylene) | CAS NO(f): 127-18-4 | |
Transitional Limits: | ||
PEL* | Tbl. Z-2 | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 25 ppm(a) | 170 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Perchloromethyl mercaptan | CAS NO(f): 594-42-3 | |
Transitional Limits: | ||
PEL* | 0.1 ppm(a) | 0.8 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 0.1 ppm(a) | 0.8 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Perchloryl fluoride | CAS NO(f): 7616-94-6 | |
Transitional Limits: | ||
PEL* | 3 ppm(a) | 13.5 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 3 ppm(a) | 14 mg/m(3)(B) |
STEL(c) | 6 ppm(a) | 28 mg/m(3)(b) |
CEILING | - | - |
Skin Designation | - | |
Perlite | ||
Total Dust | ||
Transitional Limits: | ||
PEL* | - | 15 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 15 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Respirable fraction | ||
Transitional Limits: | ||
PEL* | - | 5 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 5 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
* Petroleum distillates (Naphtha) (Rubber Solvent) | ||
Transitional Limits: | ||
PEL* | 500 ppm(a) | 2000 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 400 ppm(a) | 1600 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Phenol | CAS NO(f): 108-95-2 | |
Transitional Limits: | ||
PEL* | 5 ppm(a) | 19 mg/m(3)(b) |
Skin Designation | X | |
Final Rule Limits**: | ||
TWA | 5 ppm(a) | 19 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | X | |
Phenothiazine | CAS NO(f): 92-84-2 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 5 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | X | |
p-Phenylene diamine | CAS NO(f): 106-50-3 | |
Transitional Limits: | ||
PEL* | - | 0.1 mg/m(3)(b) |
Skin Designation | X | |
Final Rule Limits**: | ||
TWA | 0.1 mg/m(3)(b) | |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | X | |
Phenyl ether, vapor | CAS NO(f): 101-84-8 | |
Transitional Limits: | ||
PEL* | 1 ppm(a) | 7 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 1 ppm(a) | 7 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Phenyl ether-biphenyl mixture, vapor | ||
Transitional Limits: | ||
PEL* | 1 ppm(a) | 7 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 1 ppm(a) | 7 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Phenylethylene; | ||
see Styrene | ||
Phenyl glycidyl ether (PGE) | CAS NO(f): 122-60-1 | |
Transitional Limits: | ||
PEL* | 10 ppm(a) | 60 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 1 ppm(a) | 6 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Phenylhydrazine | CAS NO(f): 100-63-0 | |
Transitional Limits: | ||
PEL* | 5 ppm(a) | 22 mg/m(3)(b) |
Skin Designation | X | |
Final Rule Limits**: | ||
TWA | 5 ppm(a) | 20 mg/m(3)(b) |
STEL(c) | 10 ppm(a) | 45 mg/m(3)(b) |
CEILING | - | - |
Skin Designation | X | |
Phenyl mercaptan | CAS NO(f): 108-98-5 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 0.5 ppm(a) | 2 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Phenylphosphine | CAS NO(f): 638-21-1 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | - |
STEL(c) | - | - |
CEILING | 0.05 ppm(a) | 0.25 mg/m(3)(b) |
Skin Designation | - | |
Phorate | CAS NO(f): 298-02-2 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 0.05 mg/m(3)(b) |
STEL(c) | - | 0.2 mg/m(3)(b) |
CEILING | - | - |
Skin Designation | X | |
Phosdrin (Mevinphos (R)) | CAS NO(f): 7786-34-7 | |
Transitional Limits: | ||
PEL* | - | 0.1 mg/m(3)(b) |
Skin Designation | X | |
Final Rule Limits**: | ||
TWA | 0.01 ppm(a) | 0.1 mg/m(3)(b) |
STEL(c) | 0.03 ppm(a) | 0.3 mg/m(3)(b) |
CEILING | - | - |
Skin Designation | X | |
Phosgene (Carbonyl chloride) | CAS NO(f): 75-44-5 | |
Transitional Limits: | ||
PEL* | 0.1 ppm(a) | 0.4 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 0.1 ppm(a) | 0.4 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Phosphine | CAS NO(f): 7803-51-2 | |
Transitional Limits: | ||
PEL* | 0.3 ppm(a) | 0.4 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 0.3 ppm(a) | 0.4 mg/m(3)(b) |
STEL(c) | 1 ppm(a) | 1 mg/m(3)(b) |
CEILING | - | - |
Skin Designation | - | |
Phosphoric acid | CAS NO(f): 7664-38-2 | |
Transitional Limits: | ||
PEL* | - | 1 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 1 mg/m(3)(b) |
STEL(c) | - | 3 mg/m(3)(b) |
CEILING | - | - |
Skin Designation | - | |
Phosphorus (yellow) | CAS NO(f): 7723-14-0 | |
Transitional Limits: | ||
PEL* | - | 0.1 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 0.1 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Phosphorous oxychloride | CAS NO(f): 10025-87-3 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 0.1 ppm(a) | 0.6 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Phosphorus pentachloride | CAS NO(f): 10026-13-8 | |
Transitional Limits: | ||
PEL* | - | 1 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 1 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Phosphorus pentasulfide | CAS NO(f): 1314-80-3 | |
Transitional Limits: | ||
PEL* | 1 mg/m(3)(b) | |
Skin designation | - | |
Final Rule Limits**: | ||
TWA | - | 1 mg/m(3)(b) |
STEL(c) | - | 3 mg/m(3)(b) |
CEILING | - | - |
Skin Designation | - | |
Phosphorus trichloride | CAS NO(f): 7719-12-2 | |
Transitional Limits: | ||
PEL* | 0.5 ppm(a) | 3 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 0.2 ppm(a) | 1.5 mg/m(3)(b) |
STEL(c) | 0.5 ppm(a) | 3 mg/m(3)(b) |
CEILING | - | - |
Skin Designation | - | |
Phthalic anhydride | CAS NO(f): 85-44-9 | |
Transitional Limits: | ||
PEL* | 2 ppm(a) | 12 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 1 ppm(a) | 6 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
m-Phthalodinitrile | CAS NO(f): 626-17-5 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 5 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Pictoram | CAS NO(f): 1918-02-1 | |
Total Dust | ||
Transitional Limits: | ||
PEL* | - | 15 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 10 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Respirable fraction | ||
Transitional Limits: | ||
PEL* | - | 5 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 5 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Picric acid | CAS NO(f): 88-89-1 | |
Transitional Limits: | ||
PEL* | - | 0.1 mg/m(3)(b) |
Skin Designation | X | |
Final Rule Limits**: | ||
TWA | - | 0.1 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | X | |
Piperazine dihydro-chloride | CAS NO(f): 142-64-3 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 5 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Pindone (2-Pivalyl-1,3-indandione) | CAS NO(f): 83-26-1 | |
Transitional Limits: | ||
PEL* | - | 0.1 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 0.1 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Plaster of paris | CAS NO(f): 26499-65-0 | |
Total Dust | ||
Transitional Limits: | ||
PEL* | - | 15 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 15 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Respirable fraction | ||
Transitional Limits: | ||
PEL* | - | 5 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 5 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Platinum (as Pt) | CAS NO(f): 7440-06-4 | |
Metal | ||
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 1 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Soluble Salts | ||
Transitional Limits: | ||
PEL* | - | 0.002 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 0.002 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Portland cement | CAS NO(f): 65997-15-1 | |
Total Dust | ||
Transitional Limits: | ||
PEL* | - | Tbl. Z-3 |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 10 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Respirable fraction | ||
Transitional Limits: | ||
PEL* | - | Tbl. Z-3 |
Skin Designation | - | |
Final Rule Limits **: | ||
TWA | - | 5 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Potassium hydroxide | CAS NO(f): 1310-58-3 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | - |
STEL(c) | - | - |
CEILING | - | 2 mg/m(3)(b) |
Skin Designation | - | |
Propane | CAS NO(f): 74-98-6 | |
Transitional Limits: | ||
PEL* | 1000 ppm(a) | 1800 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 1000 ppm(a) | 1800 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | ||
Skin Designation | - | |
Propargyl alcohol | CAS NO(f): 107-19-7 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 1 ppm(a) | 2 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | X | |
beta-Propriolactone; | CAS NO(f): 57-57-8 | |
see 1910.1013 | ||
Propionic acid | CAS NO(f): 79-09-4 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 10 ppm(a) | 30 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Propoxur (Baygon) | CAS NO(f): 114-26-1 | |
Transitonal Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 0.5 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
n-Propyl acetate | CAS NO(f): 109-60-4 | |
Transitional Limits: | ||
PEL* | 200 ppm(a) | 840 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 200 ppm(a) | 840 mg/m(3)(b) |
STEL(c) | 250 ppm(a) | 1050 mg/m(3)(b) |
CEILING | - | - |
Skin Designation | - | |
n-Propyl alcohol | CAS NO(f): 71-23-8 | |
Transitional Limits: | ||
PEL* | 200 ppm(a) | 500 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 200 ppm(a) | 500 mg/m(3)(b) |
STEL(c) | 250 ppm(a) | 625 mg/m(3)(b) |
CEILING | - | - |
Skin Designation | - | |
n-Propyl nitrate | CAS NO(f): 627-13-4 | |
Transitional Limits: | ||
PEL* | 25 ppm(a) | 110 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 25 ppm(a) | 105 mg/m(3)(b) |
STEL(c) | 40 ppm(a) | 170 mg/m(3)(b) |
CEILING | - | - |
Skin Designation | - | |
Propylene dichloride | CAS NO(f): 78-87-5 | |
Transitional Limits: | ||
PEL* | 75 ppm(a) | 350 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 75 ppm(a) | 350 mg/m(3)(b) |
STEL(c) | 110 ppm(a) | 510 mg/m(3)(b) |
CEILING | - | - |
Skin Designation | - | |
Propylene glycol dinitrate | CAS NO(f): 6423-43-4 | |
Transitional Limits: | ||
PEL* | - | |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 0.05 ppm(a) | 0.8 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Propylene glycol monomethyl ether | CAS NO(f): 107-98-2 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 100 ppm(a) | 360 mg/m(3)(b) |
STEL(c) | 150 ppm(a) | 540 mg/m(3)(b) |
CEILING | - | - |
Skin Designation | - | |
Propylene imine | CAS NO(f): 75-55-8 | |
Transitional Limits: | ||
PEL* | 2 ppm(a) | 5 mg/m(3)(b) |
Skin Designation | X | |
Final Rule Limits**: | ||
TWA | 2 ppm(a) | 5 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | X | |
Propylene oxide | CAS NO(f): 75-56-9 | |
Transitional Limits: | ||
PEL* | 100 ppm(a) | 240 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 20 ppm(a) | 50 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Propyne; | ||
see Methyl acetylene | ||
Pyrethrum | CAS NO(f): 8003-34-7 | |
Transitional Limits: | ||
PEL* | - | 5 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 5 ppm(a) | - |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Pyridine | CAS NO(f): 110-86-1 | |
Transitional Limits: | ||
PEL* | 5 ppm(a) | 15 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 5 ppm(a) | 15 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Quinone | CAS NO(f): 106-51-4 | |
Transitional Limits: | ||
PEL* | 0.1 ppm(a) | 0.4 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 0.1 ppm(a) | 0.4 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Resorcinol | CAS NO(f): 108-46-3 | |
Transitional Limits: | ||
PEL* | ||
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 10 ppm(a) | 45 mg/m(3)(b) |
STEL(c) | 20 ppm(a) | 90 mg/m(3)(b) |
CEILING | - | - |
Skin Designation | - | |
Rhodium (as Rh), metal fume and insoluble compounds | CAS NO(f): 7440-16-6 | |
Transitional Limits: | ||
PEL* | 0.1 mg/m(3)(b) | |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 0.1 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | |
Skin Designation | - | |
Rhodium (as Rh), soluble compounds | CAS NO(f): 7440-16-6 | |
Transitional Limits: | ||
PEL* | - | 0.001 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 0.001 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Ronnel | CAS NO(f): 299-84-3 | |
Transitional Limits: | ||
PEL* | - | 15 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 10 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Rosin core solder pyrolysis products, as formaldehyde | ||
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 0.1 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Rotenone | CAS NO(f): 83-79-4 | |
Transitional Limits: | ||
PEL* | - | 5 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 5 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Rouge | ||
Total Dust | ||
Transitional Limits: | ||
PEL* | - | 15 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 10 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Respirable fraction | ||
Transitional Limits: | ||
PEL* | - | 5 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 5 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Selenium compounds (as Se) | CAS NO(f): 7782-49-2 | |
Transitional Limits: | ||
PEL* | - | 0.2 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 0.2 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Selenium hexafluoride (as Se) | CAS NO(f): 7783-79-1 | |
Transitional Limits: | ||
PEL* | 0.05 ppm(a) | 0.4 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 0.05 ppm(a) | 0.4 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Silica, amorphous, precipitated and gel | CAS NO(f): 112926-00-8 | |
Transitional Limits: | ||
PEL* | - | Tbl. Z-3 |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 6 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Silica, amorpous, diatomaceous earth, containing less than 1% cyrstalline silica | CAS NO(f): 61790-53-2 | |
Transitional Limits: | ||
PEL* | - | Tbl. Z-3 |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 6 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
* Silica, crystalline cristobalite, respirable dust | CAS NO(f): 14464-46-1 | |
Transitional Limits: | ||
PEL* | - | Tbl. Z-3 |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 0.05 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
* Silica, crystalline quartz, respirable dust | CAS NO(f): 14808-60-7 | |
Transitional Limits: | ||
PEL* | - | Tbl. Z-3 |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 0.1 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Silica, crystalline tripoli (as quartz), respirable dust | CAS NO(f): 1317-95-9 | |
Transitional Limits: | ||
PEL* | - | Tbl. Z-3 |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 0.1 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
* Silica, crystalline tridymite, respirable dust | CAS NO(f): 15468-32-3 | |
Transitional Limits: | ||
PEL* | - | Tbl. Z-3 |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 0.05 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Silica, fused, respirable dust | CAS NO(f): 60676-86-0 | |
Transitional Limits: | ||
PEL* | - | Tbl. Z-3 |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 0.1 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Silicates (less than 1% crystalline silica CAS NO(f): 12001-26-2 | ||
Mica (respirable dust) | ||
Transitional Limits: | ||
PEL* | - | Tbl. Z-3 |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 3 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Soapstone, Total Dust | ||
Transitional Limits: | ||
PEL* | - | Tbl. Z-3 |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 6 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Soapstone, Respirable Dust | ||
Transitional Limits: | ||
PEL* | - | Tbl. Z-3 |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 3 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | ||
Talc (containing asbestos): use asbestos limit: See 29 CRF 1910.1001 | ||
Transitional Limits: | ||
PEL* | - | Tbl. Z-3 |
Skin Designation | - | |
Final Rule Limits**: | ||
Talc (containing no asbestos), respirable dust CAS NO(f): 14807-96-6 | ||
Transitional Limits: | ||
PEL* | - | Tbl. Z-3 |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 2 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Tremolite | ||
Transitional Limits: | See 29 CFR 1010.1101 | |
PEL* | - | Tbl. Z-3 |
Skin Designation | - | |
Final Rule Limits**: | ||
Silicon | CAS NO(f): 7440-21-3 | |
Total Dust | ||
Transitional Limits: | ||
PEL* | - | 15 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 10 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Respirable fraction | ||
Transitional Limits: | ||
PEL* | - | 5 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 5 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Silicon carbide | CAS NO(f): 409-21-2 | |
Total Dust | ||
Transitional Limits: | ||
PEL* | - | 15 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 10 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Respirable fraction | ||
Transitional Limits: | ||
PEL* | - | 5 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 5 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Silicon tetrahydride | CAS NO(f): 7803-62-5 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 5 ppm(a) | 7 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Silver, metal and soluble compounds (as Ag) | CAS NO(f): 7440-22-4 | |
Transitional Limits: | ||
PEL* | - | 0.01 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 0.01 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Soapstone; | ||
see Silicates | ||
Sodium azide (as HN (3)): | CAS NO(f): 26628-22-8 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | - |
STEL(c) | - | - |
CEILING | 0.1 ppm(a) | - |
Skin Designation | X | |
(as NaN (3)): | ||
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | - |
STEL(c) | - | - |
CEILING | - | 0.3 mg/m(3)(b) |
Skin Designation | X | |
Sodium bisulfite | CAS NO(f): 7631-90-5 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 5 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Sodium fluoroacetate | CAS NO(f): 62-74-8 | |
Transitional Limits: | ||
PEL* | - | 0.05 mg/m(3)(b) |
Skin Designation | X | |
Final Rule Limits**: | ||
TWA | - | 0.05 mg/m(3)(b) |
STEL(c) | - | 0.15 mg/m(3)(b) |
CEILING | - | - |
Skin Designation | X | |
Sodium hydroxide | CAS NO(f): 1310-73-2 | |
Transitional Limits: | ||
PEL* | - | 2 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | - |
STEL(c) | - | - |
CEILING | - | 2 mg/m(3)(b) |
Skin Designation | - | |
Sodium metabisulfite | CAS NO(f): 7681-57-4 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 5 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Starch | CAS NO(f): 9005-25-8 | |
Total Dust | ||
Transitional Limits: | ||
PEL* | - | 15 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 15 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Respirable fraction | ||
Transitional Limits: | ||
PEL* | - | 5 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 5 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Stibine CAS | NO(f): 7803-52-3 | |
Transitional Limits: | ||
PEL* | 0.1 ppm(a) | 0.5 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 0.1 ppm(a) | 0.5 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Stoddard solvent | CAS NO(f): 8052-41-3 | |
Transitional Limits: | ||
PEL* | 500 ppm(a) | 2900 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 100 ppm(a) | 525 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Strychnine | CAS NO(f): 57-24-9 | |
Transitional Limits: | ||
PEL* | - | 0.15 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 0.15 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Styrene | CAS NO(f): 100-42-5 | |
Transitional Limits: | ||
PEL* | Tbl. Z-2 | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 50 ppm(a) | 215 mg/m(3)(b) |
STEL(c) | 100 ppm(a) | 425 mg/m(3)(b) |
CEILING | - | - |
Skin Designation | - | |
Subtilisins (Proteolytic enzymes) | CAS NO(f): 9014-01-1 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | - |
STEL(c) | - | 0.00006 mg/m(3)(b) (60 min.) (g) |
CEILING | - | - |
Skin Designation | ||
Footnote (g) Compliance with the subtilisins PEL is assessed by sampling with a high volume sampler (600-800 liters per minute) for at least 60 minutes. | ||
Sucrose | CAS NO(f): 57-50-1 | |
Total Dust | ||
Transitional Limits: | ||
PEL* | - | 15 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 15 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Respirable fraction | ||
Transitional Limits: | ||
PEL* | - | 5 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 5 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Sulfur dioxide | CAS NO(f): 7446-09-5 | |
Transitional Limits: | ||
PEL* | 5 ppm(a) | 13 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 2 ppm(a) | 5 mg/m(3)(b) |
*STEL(c) | 5 ppm(a) | 13 mg/m(3)(b) |
CEILING | - | - |
Skin Designation | - | |
Sulfur hexafluoride | CAS NO(f): 2551-62-4 | |
Transitional Limits: | ||
PEL* | 1000 ppm(a) | 6000 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 1000 ppm(a) | 6000 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Sulfuric acid | CAS NO(f): 7664-93-9 | |
Transitional Limits: | ||
PEL* | - | 1 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 1 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Sulfur monochloride | CAS NO(f): 10025-67-9 | |
Transitional Limits: | ||
PEL* | 1 ppm(a) | 6 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | - |
STEL(c) | - | - |
CEILING | 1 ppm(a) | 6 mg/m(3)(b) |
Skin Designation | - | |
Sulfur pentafluoride | CAS NO(f): 5714-22-7 | |
Transitional Limits: | ||
PEL* | 0.025 ppm(a) | 0.25 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | - |
STEL(c) | - | - |
CEILING | 0.01 ppm(a) | 0.1 mg/m(3)(b) |
Skin Designation | - | |
Sulfur tetrafluoride | CAS NO(f): 7783-60-0 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | - |
STEL(c) | - | - |
CEILING | 0.1 ppm(a) | 0.4 mg/m(3)(b) |
Skin Designation | - | |
Sulfuryl fluoride | CAS NO(f): 2699-79-8 | |
Transitional Limits: | ||
PEL* | 5 ppm(a) | 20 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 5 ppm(a) | 20 mg/m(3)(b) |
STEL(c) | 10 ppm(a) | 40 mg/m(3)(b) |
CEILING | - | - |
Skin Designation | - | |
Sulprofos | CAS NO(f): 35400-43-2 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 1 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Systox (R); | ||
see Demeton | ||
2,4,5-T | CAS NO(f): 93-76-5 | |
Transitional Limits: | ||
PEL* | - | 10 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 10 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Talc; | ||
see Silicates | ||
Tantalum, metal and oxide dust | CAS NO(f): 7440-25-7 | |
Transitional Limits: | ||
PEL* | - | 5 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 5 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
TEDP (Sulfotep) | CAS NO(f): 3689-24-5 | |
Transitional Limits: | ||
PEL* | - | 0.2 mg/m(3)(b) |
Skin Designation | X | |
Final Rule Limits**: | ||
TWA | - | 0.2 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | X | |
Tellurium and compounds (as Te) | CAS NO(f): 13494-80-9 | |
Transitional Limits: | ||
PEL* | - | 0.1 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 0.1 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Tellurium hexafluoride (as Te) | CAS NO(f): 7783-80-4 | |
Transitional Limits: | ||
PEL* | 0.02 ppm(a) | 0.2 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 0.02 ppm(a) | 0.2 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Temephos | CAS NO(f): 3383-96-8 | |
Total Dust | ||
Transitional Limits: | ||
PEL* | - | 15 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 10 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Respirable fraction | ||
Transitional Limits: | ||
PEL* | - | 5 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 5 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
TEPP | CAS NO(f): 107-49-3 | |
Transitional Limits: | ||
PEL* | - | 0.05 mg/m(3)(b) |
Skin Designation | X | |
Final Rule Limits**: | ||
TWA | - | 0.05 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | X | |
Terphenylis | CAS NO(f): 26140-60-3 | |
Transitional Limits: | ||
PEL* | (C) 1 ppm(a) | (C) 9 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | - |
STEL(c) | - | - |
CEILING | 0.5 ppm(a) | 5 mg/m(3)(b) |
Skin Designation | - | |
Footnote (C) denotes a ceiling limit. | ||
1,1,1,2-Tetrachloro-2,2-difluoroethane | CAS NO(f): 76-11-9 | |
Transitional Limits: | ||
PEL* | 500 ppm(a) | 4170 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 500 ppm(a) | 4170 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
1,1,2,2-Tetrachloro-1,2-difluoroethane | CAS NO(f): 76-12-0 | |
Transitional Limits: | ||
PEL* | 500 ppm(a) | 4170 mg/mm(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 500 ppm(a) | 4170 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
1,1,2,2-Tetrachloroethane | CAS NO(f): 79-34-5 | |
Transitional Limits: | ||
PEL* | 5 ppm(a) | 35 mg/m(3)(b) |
Skin Designation | X | |
Final Rule Limits**: | ||
TWA | 1 ppm(a) | 7 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | X | |
Tetrachlorethylene; | ||
see Perchloroethylene | ||
Tetrachloromethane; | ||
see Carbon tetrachloride | ||
Tetrachloronaphthalene | CAS NO(f): 1335-88-2 | |
Transitional Limits: | ||
PEL* | - | 2 mg/m(3)(b) |
Skin Designation | X | |
Final Rule Limits**: | ||
TWA | - | 2 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | X | |
Tetraethyl lead (as Pb) | CAS NO(f): 78-00-2 | |
Transitional Limits: | ||
PEL* | - | 0.075 mg/m(3)(b) |
Skin Designation | X | |
Final Rule Limits**: | ||
TWA | - | 0.075 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | X | |
Tetrahydrofuran | CAS NO(f): 109-99-9 | |
Transitional Limits: | ||
PEL* | 200 ppm(a) | 590 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 200 ppm(a) | 590 mg/m(3)(b) |
STEL(c) | 250 ppm(a) | 735 mg/m(3)(b) |
CEILING | - | - |
Skin Designation | - | |
Tetramethyl lead, (as Pb) | CAS NO (f): 75-74-1 | |
Transitional Limits: | ||
PEL* | - | 0.075 mg/m(3)(b) |
Skin Designation | X | |
Final Rule Limits**: | ||
TWA | - | 0.075 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | X | |
Tetramethyl succinonitrile | CAS NO (f): 3333-52-6 | |
Transitional Limits: | ||
PEL* | 0.5 ppm(a) | 3 mg/m(3)(b) |
Skin Designation | X | |
Final Rule Limits**: | ||
TWA | 0.5 ppm(a) | 3 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | X | |
Tetranitromethane | CAS NO (f): 509-14-8 | |
Transitional Limits: | ||
PEL* | 1 ppm(a) | 8 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 1 ppm(a) | 8 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Tetrasodium pyrophosphate | CAS NO (f): 7722-88-5 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 5 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Tetryl (2,4,6-Trinitro-phenyl-methyl-nitramine) | CAS NO (f): 479-45-8 | |
Transitional Limits: | ||
PEL* | - | 1.5 mg/m(3)(b) |
Skin Designation | X | |
Final Rule Limits**: | ||
TWA | - | 1.5 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | X | |
Thallium, soluble compounds (as Tl) | CAS NO (f): 7440-28-0 | |
Transitional Limits: | ||
PEL* | - | 0.1 mg/m(3)(b) |
Skin Designation | X | |
Final Rule Limits**: | ||
TWA | - | 0.1 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | X | |
4,4′-Thiobis (6-tert, Butyl-m-cresol) | CAS NO (f): 96-69-5 | |
Total Dust | ||
Transitional Limits: | ||
PEL* | - | 15 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 10 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Respirable fraction | ||
Transitional Limits: | ||
PEL* | - | 5 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 5 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Thioglycolic acid | CAS NO (f): 68-11-1 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 1 ppm(a) | 4 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | X | |
Thionyl chloride | CAS NO (f): 7719-09-7 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | - |
STEL(c) | - | - |
CEILING | 1 ppm(a) | 5 mg/m(3)(b) |
Skin Designation | - | |
Thiram | CAS NO (f): 137-26-8 | |
Transitional Limits: | ||
PEL* | - | 5 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 5 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Tin, inorganic compounds (except oxides) (as Sn) | CAS NO (f): 7440-31-5 | |
Transitional Limits: | ||
PEL* | - | 2 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 2 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Tin, organic compounds (as Sn) | CAS NO (f): 7440-31-5 | |
Transitional Limits: | ||
PEL* | - | 0.1 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 0.1 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | X | |
Tin oxide (as Sn) | CAS NO (f): 21651-19-4 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 2 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Titanium dioxide | CAS NO (f): 13463-67-7 | |
Total Dust | ||
Transitional Limits: | ||
PEL* | - | 15 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 10 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Toluene | CAS NO (f): 108-88-3 | |
Transitional Limits: | ||
PEL* | Tbl. Z-2 | |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 100 ppm(a) | 375 mg/m(3)(b) |
STEL(c) | 150 ppm(a) | 560 mg/m(3)(b) |
CEILING | - | - |
Skin Designation | - | |
Toluene-2,4-diisocyanate (TDI) | CAS NO (f): 584-84-9 | |
Transitional Limits: | ||
PEL* | (C) 0.02 ppm(a) | (C) 0.14 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 0.005 ppm(a) | 0.04 mg/m(3)(b) |
STEL(c) | 0.02 ppm(a) | 0.15 mg/m(3)(b) |
CEILING | - | - |
Skin Designation. | ||
Footnote (C) denotes a ceiling limit. | ||
m-Toluidine | CAS NO (f): 108-44-1 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 2 ppm(a) | 9 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | X | |
o-Toluidine | CAS NO (f): 95-53.4 | |
Transitional Limits: | ||
PEL* | 5 ppm(a) | 22 mg/m(3)(b) |
Skin Designation | X | |
Final Rule Limits**: | ||
TWA | 5 ppm(a) | 22 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | X | |
p-Toluidine | CAS NO (f): 106-49-0 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 2 ppm(a) | 9 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | X | |
Toxaphene; | ||
see Chlorinated camphene | ||
Tremolite; | ||
see Silicates | ||
Tributyl phosphate | CAS NO (f): 126-73-8 | |
Transitional Limits: | ||
PEL* | - | 5 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 0.2 ppm(a) | 2.5 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Trichloroacetic acid | CAS NO (f): 76-03-9 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 1 ppm(a) | 7 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
1,2,4-Trichlorobenzene | CAS NO (f): 120-82-1 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | - |
STEL(c) | - | - |
CEILING | 5 ppm(a) | 40 mg/m(3)(b) |
Skin Designation | - | |
1,1,1-Trichloroethane; | ||
see Methyl chloroform | ||
1,1,2-Trichloroethane | CAS NO (f): 79-00-5 | |
Transitional Limits: | ||
PEL* | 10 ppm(a) | 45 mg/m(3)(b) |
Skin Designation | X | |
Final Rule Limits**: | ||
TWA | 10 ppm(a) | 45 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | X | |
Trichloroethylene | CAS NO (f): 79-01-6 | |
Transitional Limits: | ||
PEL* | Tbl. Z-2 | Tbl. Z-2 |
Skin Designation | Thl. Z-2 | |
Final Rule Limits**: | ||
TWA | 50 ppm(a) | 270 mg/m(3)(b) |
STEL(c) | 200 ppm(a) | 1080 mg/m(3)(b) |
CEILING | - | - |
Skin Designation | - | |
Trichloromethane; | ||
see Chloroform | ||
Trichloronaphthalene | CAS NO (f): 1321-65-9 | |
Transitional Limits: | ||
PEL* | - | 5 mg/m(3)(b) |
Skin Designation | X | |
Final Rule Limits**: | ||
TWA | - | 5 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | X | |
1,2,3-Trichloropropane | CAS NO (f): 96-18-4 | |
Transitional Limits: | ||
PEL* | 50 ppm(a) | 300 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 10 ppm(a) | 60 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
1,1,2-Trichloro-1,2,2-trifluoroethane | CAS NO (f): 76-13-1 | |
Transitional Limits: | ||
PEL* | 1000 ppm(a) | 7600 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 1000 ppm(a) | 7600 mg/m(3)(b) |
STEL(c) | 1250 ppm(a) | 9500 mg/m(3)(b) |
CEILING | - | - |
Skin Designation | - | |
Triethylamine | CAS NO (f): 121-44-8 | |
Transitional Limits: | ||
PEL* | 25 ppm(a) | 100 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 10 ppm(a) | 40 mg/m(3)(b) |
STEL(c) | 15 ppm(a) | 60 mg/m(3)(b) |
CEILING | - | - |
Skin Designation | - | |
Trifluorobromomethane | CAS NO (f): 75-63-8 | |
Transitional Limits: | ||
PEL* | 1000 ppm(a) | 6100 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 1000 ppm(a) | 6100 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Trimellitic anhydride | CAS NO (f): 552-30-7 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 0.005 ppm(a) | 0.04 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Trimethylamine | CAS NO (f): 75-50-3 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 10 ppm(a) | 24 mg/m(3)(b) |
STEL(c) | 15 ppm(a) | 36 mg/m(3)(b) |
CEILING | - | - |
Skin Designation | - | |
Trimethyl benzene | CAS NO (f): 25551-13-7 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 25 ppm(a) | 125 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Trimethyl phosphite | CAS NO (f): 121-45-9 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 2 ppm(a) | 10 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
2,4,6-Trinitrophenyl; | ||
see Picric acid | ||
2,4,6-Trinitrophenylmethyl nitramine; | ||
see Tetryl | ||
2,4,6-Trinitrotoluene (TNT) | CAS NO (f): 118-96-7 | |
Transitional Limits: | ||
PEL* | - | 1.5 mg/m(3)(b) |
Skin Designation | X | |
Final Rule Limits**: | ||
TWA | - | 0.5 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | X | |
Triorthocresyl phosphate | CAS NO (f): 78-30-8 | |
Transitional Limits: | ||
PEL* | - | 0.1 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 0.1 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | X | |
Triphenyl amine | CAS NO (f): 603-34-9 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 5 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Triphenyl phosphate | CAS NO (f): 115-86-6 | |
Transitional Limits: | ||
PEL* | - | 3 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 3 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Tungsten (as W) | CAS NO (f): 7440-33-7 | |
Insoluble Compounds | ||
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 5 mg/m(3)(b) |
STEL(c) | - | 10 mg/m(3)(b) |
CEILING | - | - |
Skin Designation | - | |
Soluble Compounds | ||
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 1 mg/m(3)(b) |
STEL(c) | - | 3 mg/m(3)(b) |
CEILING | - | - |
Skin Designation | - | |
Turpentine | CAS NO (f): 8006-64-2 | |
Transitional Limits: | ||
PEL* | 100 ppm(a) | 560 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 100 ppm(a) | 560 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Uranium (as U) | CAS NO (f): 7440-61-1 | |
Soluble Compounds | ||
Transitional Limits: | ||
PEL* | - | 0.05 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 0.05 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Insoluble Compounds | ||
Transitional Limits: | ||
PEL* | - | 0.25 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 0.2 mg/m(3)(b) |
STEL(c) | - | 0.6 mg/m(3)(b) |
CEILING | - | - |
Skin Designation | - | |
n-Valeraldehyde | CAS NO (f): 110-62-3 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 50 ppm(a) | 175 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Vanadium | CAS NO (f): 1314-62-1 | |
Respirable dust (as V(2)O(5)) | ||
Transitional Limits: | ||
PEL* | - | (C) 0.5 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 0.05 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Fume (as V(2)O(5)) | ||
Transitional Limits: | ||
PEL* | - | (C) 0.1 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 0.05 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Footnote (C) denotes a ceiling limit | ||
Vegetable oil mist | ||
Total Dust | ||
Transitional Limits: | ||
PEL* | - | 15 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 15 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Respirable fraction | ||
Transitional Limits: | ||
PEL* | - | 5 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 5 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Vinyl acetate | CAS NO (f): 108-05-4 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 10 ppm(a) | 30 mg/m(3)(b) |
STEL(c) | 20 ppm(a) | 60 mg/m(3)(b) |
CEILING | - | - |
Skin Designation | - | |
Vinyl benzene; | ||
see Styrene | ||
Vinyl bromide | CAS NO (f): 593-60-2 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 5 ppm(a) | 20 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Vinyl chloride; | ||
see 1910.1017 | ||
CAS NO (f): 75-01-4 | ||
Vinyl cyanide*; | ||
see Acrylonitrile | ||
Vinyl cyclohexene dioxide | CAS NO (f): 106-87-6 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 10 ppm(a) | 60 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | X | |
Vinylidene chloride | ||
(1,1-Dichloroethylene) | CAS NO (f): 75-35-4 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 1 ppm(a) | 4 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Vinyl toluene | CAS NO (f): 25013-15-4 | |
Transitional Limits: | ||
PEL* | 100 ppm(a) | 480 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 100 ppm(a) | 480 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
VM & P Naphtha | CAS NO (f): 8032-32-4 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 300 ppm(a) | 1350 mg/m(3)(b) |
STEL(c) | 400 ppm(a) | 1800 mg/m(3)(b) |
CEILING | - | - |
Skin Designation | - | |
Warfarin | CAS NO (f): 81-81-2 | |
Transitional Limits: | ||
PEL* | - | 0.1 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 0.1 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Welding fumes (total particulate***) (As determined from breathing-zone air samples) | ||
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 5 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Footnote*** As determined from breathing-zone air samples. | ||
Wood dust, all soft and hard woods, except Western red cedar | ||
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 5 mg/m(3)(b) |
STEL(c) | - | 10 mg/m(3)(b) |
CEILING | - | - |
Skin Designation | - | |
Wood dust, Western red cedar | ||
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 2.5 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Xylenes (o-, m-, p-isomers) | CAS NO(f): 1330-20-7 | |
Transitional Limits: | ||
PEL* | 100 ppm(a) | 435 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | 100 ppm(a) | 435 mg/m(3)(b) |
STEL(c) | 150 ppm(a) | 655 mg/m(3)(b) |
CEILING | - | - |
Skin Designation | - | |
m-Xylene alpha, alpha′-diamine | CAS NO(f): 1477-55-0 | |
Transitional Limits: | ||
PEL* | - | - |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | - |
STEL(c) | - | - |
CEILING | - | 0.1 mg/m(3)(b) |
Skin Designation | X | |
Xylidine | CAS NO(f): 1300-73-8 | |
Transitional Limits: | ||
PEL* | 5 ppm(a) | 25 mg/m(3)(b) |
Skin Designation | X | |
Final Rule Limits**: | ||
TWA | 2 ppm(a) | 10 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | X | |
Yttrium | CAS NO(f): 7440-65-5 | |
Transitional Limits: | ||
PEL* | - | 1 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 1 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Zinc chloride fume | CAS NO(f): 7646-85-7 | |
Transitional Limits: | ||
PEL* | - | 1 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 1 mg/m(3)(b) |
STEL(c) | - | 2 mg/m(3)(b) |
CEILING | - | - |
Skin Designation | - | |
Zinc chromate (as CrO (3)) | CAS NO(f): Varies with Compound | |
Transitional Limits: | ||
PEL* | Tbl. Z-2 | Tbl. Z-2 |
Skin Designation | Tbl. Z-2 | |
Final Rule Limits**: | ||
TWA | - | - |
STEL(c) | - | - |
CEILING | - | 0.1 mg/m(3)(b) |
Skin Designation | - | |
Zinc oxide fume | CAS NO (f): 1314-13-2 | |
Transitional Limits: | ||
PEL* | - | 5 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 5 mg/m(3)(b) |
STEL(c) | - | 10 mg/m(3)(b) |
CEILING | - | - |
Skin Designation | - | |
Zinc oxide | CAS NO (f): 1314-13-2 | |
Total Dust | ||
Transitional Limits: | ||
PEL* | - | 15 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 10 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Respirable fraction | ||
Transitional Limits: | ||
PEL* | - | 5 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 5 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Zinc stearate | CAS NO (f): 557-05-1 | |
Total Dust | ||
Transitional Limits: | ||
PEL* | - | 15 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 10 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Respirable fraction | ||
Transitional Limits: | ||
PEL* | - | 5 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 5 mg/m(3)(b) |
STEL(c) | - | - |
CEILING | - | - |
Skin Designation | - | |
Zirconium compounds (as Zr) | CAS NO (f): 7440-67-7 | |
Transitional Limits: | ||
PEL* | - | 5 mg/m(3)(b) |
Skin Designation | - | |
Final Rule Limits**: | ||
TWA | - | 5 mg/m(3)(b) |
STEL(c) | - | 10 mg/m(3)(b) |
CEILING | - | - |
Skin Designation | - |
TABLE Z-2
Acceptable max. peak above the acceptable ceil. concentration for an 8-hr shift | ||||
---|---|---|---|---|
Material | 8-hour time-wtd Average | Acceptable ceiling concentration | ||
Concentration | Maximum duration | |||
*Benzene (Z37.40-1969)(a) | 10 ppm | 25 ppm | 50 ppm | 10 minutes |
Beryllium and Berylium compounds (Z37.29-1970) | 2 ug/m(3) | 5 ug/m(3) | 25 ug/m(3) | 30 minutes |
*Cadmium fume (Z37.5-1970)(c) | 0.1 mg/m(3) | 0.3 mg/m(3) | ||
Cadmium dust (Z37.5-1970)(c) | 0.2 mg/m(3) | 0.6 mg/m(3) | ||
Carbon disulfide (Z37.3-1968) | 20 ppm | 30 ppm | 100 ppm | 30 minutes |
Carbon Tetrachloride (Z37.17-1967) | 10 ppm | 25 ppm | 200 ppm | 5 min. in any 4 hrs. |
Chromic acid and chromates (Z37-7-1971) | 1 mg/10 m(3) | |||
Ethylene dibromide (Z37.31-1970) | 20 ppm | 30 ppm | 50 ppm | 5 minutes |
Ethylene dichloride (Z37.21-1969) | 50 ppm | 100 ppm | 200 ppm | 5 min. in any 3 hrs. |
Formaldehyde (Z37.16-1967)(b) | 3 ppm | 5 ppm | 10 ppm | 30 minutes |
Hydrogen fluoride (Z37.28-1969) | 3 ppm | |||
Hydrogen sulfide (Z37.2-1966) | 20 ppm | 50 ppm | 10 minutes once only if no other meas. exposure occurs | |
Fluoride as dust (Z37.38-1969) | 2.5 mg.m(3) | |||
Mercury (Z237.8-1971) | 1 mg/10 m(3) | |||
Methyl chloride (Z37.18-1969) | 100 ppm | 200 ppm | 300 ppm | 5 min. in any 3 hrs. |
Methylene chloride (Z37.23-1969) | 500 ppm | 1,000 ppm | 2,000 ppm | 5 min. in any 2 hrs. |
Organo (alkyl) mercury (Z37.30-1969) | 0.01 mg/m(3) | 0.04 mg/m(3) | ||
Styrene (Z37.15-1969) | 100 ppm | 200 ppm | 600 ppm | 5 min. in any 3 hrs. |
Tetrachloroethylene (Z37.22-1967) | 100 ppm | 200 ppm | 300 ppm | 5 min. in any 3 hrs. |
Toluene (Z37.12-1967) | 200 ppm | 300 ppm | 500 ppm | 10 minutes |
Trichloroethylene (Z37.19-1967) | 100 ppm | 200 ppm | 300 ppm | 5 min in any 2 hrs. |
*The transitional PELs are 8-hour TWAs unless otherwise noted; a (C) designation denotes a ceiling limit.
** Unless otherwise noted, employers in General Industry (i.e., those covered by 29 CFR 1910) may use any combination of controls to achieve these limits until December 31, 1993 as set forth in 29 CFR 1910.1000(f).
*** As determined from breathing zone air samples.
a Parts of vapor or gas per million parts of contaminated air by volume at 25 degrees C abd 760 torr.
b Milligrams of substance per cubic meter of air. When a numeric entry for a substance is in the mg/m(3) column and not in the ppm column, then the number in the mg/m(3) column is exact. When numerical entries for a substance are in both the ppm and mg/m(3) columns, then the number in the mg/m(3) column may be rounded off.
c Duration is for 15 minutes, unless otherwise noted.
d The final benzene standard in 1910,.1028 applies to all occupational exposures to benzene except some subsegments of industry where exposures are consistenly under the action level (i.e., distribution and sale of fuels, sealed containers and pipelines, coke production, oil and gas drilling and production, natural gas processing, and the percentage exclusion for liquid mixtures); for the excepted subsegments, the benzene limits in Table Z-2 apply.
TABLE Z-3
Mineral Dusts
Substance | mppcf(e) | mg/m(3) |
---|---|---|
SILICA: | 250(f) | 10 mg/ |
CRYSTALLINE | m(3)(m) | |
QUARTZ (RESPIRABLE) | ||
QUARTZ (TOTAL DUST) | %SiO(2) +5 | %SiO(2) +2 |
30 mg/m(3) | ||
%SiO(2) +2 | ||
CRYSTOBALITE: Use ½ the value calculated from the count or mass formulae for quartz | ||
TRIDYMITE: Use ½ the value calculated from the formulae for quartz | ||
AMORPHOUS, including natural diatomaceous earth | 20 | 80 mg/m(3) |
%SiO(2) | ||
SILICATES (less than 1% crystaline silica): | ||
Mica | 20 | |
Soapstone | 20 | |
Talc (not containing asbestos) | 20(n) | |
Talc (containing asbestos). | ||
Use asbestos limit | ||
Tremolite (see 29 CFR 1910.1101) | ||
Portland cement | 50 | |
GRAPHITE (NATURAL) | 15 | |
COAL DUST (respirable fraction less than 5% SiO(2) | 2.4 mg/m(3) | |
or | ||
For more than 5% SiO(2) | 10 mg/m(3) | |
%SiO(2) +2 | ||
* INERT OR NUISANCE DUST(G): | ||
Respirable fraction | 15 | 5 mg/m(3) |
Total dust | 50 | 15 mg/m(3) |
Note - Conversion factors - mppcf X 35.3 = million particles per cubic meter = particles per c.c.
*This standard applies to the industry segments exempt from the 1 ppm 8-hour TWA and 5 ppm STEL of the benzene standard at 1910.1028.
12 CRR-NY 800.5
Current through August 15, 2021
End of Document |
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