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OSHA Substance-Specific Laboratory Air Standards

Action Levels and PELs for substances
Listed in 29 CFR 1910.1001 through 1910.1052

SUBSTANCE Action Level Permissible Exposure Limit Substance Specific Standard
4-nitrobiphenyl - - 29 CFR 1910.1003
Alpha-naphthylamine - - 29 CFR 1910.1003, 29 CFR 1910.1004
Methyl chloromethyl ether - - 29 CFR 1910.1003, 29 CFR 1910.1006
3,3-dichlorobenzidine - - 29 CFR 1910.1003, 29 CFR 1910.1007
Bis-chloromethyl ether - 1 ppb 29 CFR 1910.1003, 29 CFR 1910.1008
Beta-naphthylamine - - 29 CFR 1910.1003, 29 CFR 1910.1009
benzidine - - 29 CFR 1910.1003, 29 CFR 1910.1010
4-aminodiphenyl - - 29 CFR 1910.1003, 29 CFR 1910.1011
Ethyleneimine - 0.5 ppm 29 CFR 1910.1003, 29 CFR 1910.1012
Beta-propiolactone - 0.5 ppm 29 CFR 1910.1003, 29 CFR 1910.1013
2-acetylaminofluorene - - 29 CFR 1910.1003, 29 CFR 1910.1014
4-dimethylaminoazobenzene - - 29 CFR 1910.1003, 29 CFR 1910.1015
N-nitrosodimethylamine - - 29 CFR 1910.1003, 29 CFR 1910.1016
Vinyl Chloride 0.5 ppm 1 ppm 29 CFR 1910.1017
Arsenic, inorganic 5 ug/m3 10 ug/m3 29 CFR 1910.1018
Lead (metallic lead, dust or vapor, inorganic lead compounds, and lead soaps) 30 uG/m3 50 ug/m3 29 CFR 1910.1025
Chromium (VI) 2.5 ug/m3 5 ug/m3 29 CFR 1910.1026
Cadmium 2.5 ug/m3 5 ug/m3 29 CFR 1910.1027
Benzene 0.5 ppm 1 ppm 29 CFR 1910.1028
1,2-dibromo-3-chloropropane - 1 ppb 29 CFR 1910.1044
Acrylonitrile 1 ppm 2 ppm 29 CFR 1910.1045
Ethylene oxide 0.5 ppm 1 ppm 29 CFR 1910.1047
Formaldehyde 0.5 ppm 0.75 ppm 29 CFR 1910.1048
Methylenedianiline 5 ppb 10 ppb 29 CFR 1910.1050
1,3-Butadiene 0.5 ppm - 29 CFR 1910.1051
Methylene Chloride 12.5 ppm 25 ppm 29 CFR 1910.1052

Additional OSHA Substance-Specific Standards

SUBSTANCE Action Level Permissible Exposure Limit Substance Specific Standard
Asbestos - 0.1 Fiber/cc 29 CFR 1910.1001
Coal tar pitch volatiles - 0.2 mg/m3 29 CFR 1910.1002
Coke oven emissions - 0.15 mg/m3 29 CFR 1910.1029
Cotton dust, raw - 1.0 mg/m3 29 CFR 1910.1043