Airborne contaminant | CAS | TWA8 | STEL | Ceiling | Skin |
Abate (Temephos) | 3383-96-8 | —— | —— | —— | —— |
Total particulate | —— | 10 mg/m3 | 20 mg/m3 | —— | —— |
Respirable fraction | —— | 5 mg/m3 | 10 mg/m3 | —— | —— |
Acetaldehyde | 75-07-0 | 100 ppm | 150 ppm | —— | —— |
Acetic acid | 64-19-7 | 10 ppm | 20 ppm | —— | —— |
Acetic anhydride | 108-24-7 | —— | —— | 5 ppm | —— |
Actinolite (asbestiform) (as asbestos) | —— | 0.1 f/cc | 1.0 f/cc (30 minutes) | —— | —— |
Acetone | 67-64-1 | 750 ppm | 1,000 ppm | —— | —— |
Acetonitrile | 75-05-8 | 40 ppm | 60 ppm | —— | —— |
2-Acetylaminofluorene | 53-96-3 | —— | —— | —— | —— |
Acetylene | 74-86-2 | Simple asphyxiant | —— | —— | —— |
Acetylene dichloride (1,2-Dichloroethylene) | 540-59-0 | 200 ppm | 250 ppm | —— | —— |
Acetylene tetrabromide | 79-27-6 | 1 ppm | 3 ppm | —— | —— |
Acetylsalicylic acid (Aspirin) | 50-78-2 | 5 mg/m3 | 10 mg/m3 | —— | —— |
Acrolein | 107-02-8 | 0.1 ppm | 0.3 ppm | —— | —— |
Acrylamide | 79-06-1 | 0.03 mg/m3 | 0.09 mg/m3 | —— | X |
Acrylic acid | 79-10-7 | 10 ppm | 20 ppm | —— | X |
Acrylonitrile (Vinyl cyanide) | 107-13-1 | 2 ppm | 10 ppm | —— | —— |
Aldrin | 309-00-2 | 0.25 mg/m3 | 0.75 mg/m3 | —— | X |
Allyl alcohol | 107-18-6 | 2 ppm | 4 ppm | —— | X |
Allyl chloride | 107-05-1 | 1 ppm | 2 ppm | —— | —— |
Allyl glycidyl ether (AGE) | 106-92-3 | 5 ppm | 10 ppm | —— | —— |
Allyl propyl disulfide | 2179-59-1 | 2 ppm | 3 ppm | —— | —— |
alpha-Alumina (Aluminum oxide) | 1344-28-1 | —— | —— | —— | —— |
Total particulate | —— | 10 mg/m3 | 20 mg/m3 | —— | —— |
Respirable fraction | —— | 5 mg/m3 | 10 mg/m3 | —— | —— |
Aluminum (as Al) | 7429-90-5 | —— | —— | —— | —— |
Total particulate | —— | 10 mg/m3 | 20 mg/m3 | —— | —— |
Respirable fraction | —— | 5 mg/m3 | 10 mg/m3 | —— | —— |
Pyro powders | —— | 5 mg/m3 | 10 mg/m3 | —— | —— |
Welding fumes | —— | 5 mg/m3 | 10 mg/m3 | —— | —— |
Soluble salts | —— | 2 mg/m3 | 4 mg/m3 | —— | —— |
Alkyls (NOC) | —— | 2 mg/m3 | 4 mg/m3 | —— | —— |
Aluminum oxide (Alundum, Corundum) | 7429-90-5 | —— | —— | —— | —— |
Total particulate | —— | 10 mg/m3 | 20 mg/m3 | —— | —— |
Respirable fraction | —— | 5 mg/m3 | 10 mg/m3 | —— | —— |
4-Aminodiphenyl | 92-67-1 | —— | —— | —— | —— |
2-Aminoethanol (Ethanolamine) | 141-43-5 | 3 ppm | 6 ppm | —— | —— |
2-Aminopyridine | 504-29-0 | 0.5 ppm | 1.5 ppm | —— | —— |
Amitrole | 61-82-5 | 0.2 mg/m3 | 0.6 mg/m3 | —— | —— |
Ammonia | 7664-41-7 | 25 ppm | 35 ppm | —— | —— |
Ammonium chloride, fume | 12125-02-9 | 10 mg/m3 | 20 mg/m3 | —— | —— |
Ammonium sulfamate (Ammate) | 7773-06-0 | —— | —— | —— | —— |
Total particulate | —— | 10 mg/m3 | 20 mg/m3 | —— | —— |
Respirable fraction | —— | 5.0 mg/m3 | 10 mg/m3 | —— | —— |
Amosite (as asbestos) | —— | 0.1 f/cc | 1.0 f/cc (30 minutes) | —— | —— |
n-Amyl acetate | 628-63-7 | 100 ppm | 150 ppm | —— | —— |
sec-Amyl acetate | 626-38-0 | 125 ppm | 156 ppm | —— | —— |
Aniline and homologues | 62-53-3 | 2 ppm | 4 ppm | —— | X |
Anisidine (o, p-isomers) | 29191-52-4 | 0.1 ppm | 0.3 ppm | —— | X |
Anthophyllite (asbestiform) (as asbestos) | —— | 0.1 f/cc | 1.0 f/cc (30 minutes) | —— | —— |
Antimony and compounds (as Sb) | 7440-36-0 | 0.5 mg/m3 | 1.5 mg/m3 | —— | —— |
ANTU (alpha Naphthyl thiourea) | 86-88-4 | 0.3 mg/m3 | 0.9 mg/m3 | —— | —— |
Argon | 7440-37-1 | Simple asphyxiant | —— | —— | —— |
Arsenic, organic compounds (as As) | 7440-38-2 | 0.2 mg/m3 | 0.6 mg/m3 | —— | —— |
Arsenic, inorganic compounds (as As) (when use is covered by chapter | 7440-38-2 | 0.01 mg/m3 | —— | —— | —— |
Arsenic, inorganic compounds (as As) (when use is not covered by | 7440-38-2 | 0.2 mg/m3 | 0.6 mg/m3 | —— | —— |
Arsine | 7784-42-1 | 0.05 ppm | 0.15 ppm | —— | —— |
Asbestos | —— | 0.1 f/cc | 1.0 f/cc (30 minutes) | —— | —— |
Asphalt (Petroleum fumes) | 8052-42-4 | 5 mg/m3 | 10 mg/m3 | —— | —— |
Atrazine | 1912-24-9 | 5 mg/m3 | 10 mg/m3 | —— | —— |
Azinphos methyl (Guthion) | 86-50-0 | 0.2 mg/m3 | 0.6 mg/m3 | —— | X |
Azodrin (Monocrotophos) | 6923-22-4 | 0.25 mg/m3 | 0.75 mg/m3 | —— | —— |
Barium, soluble compounds (as Ba) | 7440-39-3 | 0.5 mg/m3 | 1.5 mg/m3 | —— | —— |
Barium sulfate | 7727-43-7 | —— | —— | —— | —— |
Total particulate | —— | 10 mg/m3 | 20 mg/m3 | —— | —— |
Respirable fraction | —— | 5 mg/m3 | 10 mg/m3 | —— | —— |
Baygon (Propoxur) | 114-26-1 | 0.5 mg/m3 | 1.5 mg/m3 | —— | —— |
Benomyl | 17804-35-2 | —— | —— | —— | —— |
Total particulate | —— | 10 mg/m3 | 20 mg/m3 | —— | —— |
Respirable fraction | —— | 5 mg/m3 | 10 mg/m3 | —— | —— |
Benzene | 71-43-2 | 1 ppm | 5 ppm | —— | —— |
Benzidine | 92-87-5 | —— | —— | —— | —— |
p-Benzoquinone (Quinone) | 106-51-4 | 0.1 ppm | 0.3 ppm | —— | —— |
Benzo(a) pyrene (Coal tar pitch volatiles) | 65996-93-2 | 0.2 mg/m3 | 0.6 mg/m3 | —— | —— |
Benzoyl peroxide | 94-36-0 | 5 mg/m3 | 10 mg/m3 | —— | —— |
Benzyl chloride | 100-44-7 | 1ppm | 3 ppm | —— | —— |
Beryllium and beryllium compounds (as Be) | 7440-41-7 | 0.0002 mg/m3 | 0.002 mg/m3 | —— | —— |
Biphenyl (Diphenyl) | 92-52-4 | 0.2 ppm | 0.6 ppm | —— | —— |
Bismuth telluride, undoped | 1304-82-1 | —— | —— | —— | —— |
Total particulate | —— | 10 mg/m3 | 20 mg/m3 | —— | —— |
Respirable fraction | —— | 5 mg/m3 | 10 mg/m3 | —— | —— |
Bismuth telluride, Se-doped | —— | 5 mg/m3 | 10 mg/m3 | —— | —— |
Borates, tetra, sodium salts | —— | —— | —— | —— | —— |
Anhydrous | 1330-43-4 | 1 mg/m3 | 3 mg/m3 | —— | —— |
Decahydrate | 1303-96-4 | 5 mg/m3 | 10 mg/m3 | —— | —— |
Pentahydrate | 12179-04-3 | 1 mg/m3 | 3 mg/m3 | —— | —— |
Boron oxide | 1303-86-2 | —— | —— | —— | —— |
Total particulate | —— | 10 mg/m3 | 20 mg/m3 | —— | —— |
Boron tribromide | 10294-33-4 | —— | —— | 1 ppm | —— |
Boron trifluoride | 6737-07-2 | —— | —— | 1 ppm | —— |
Bromacil | 314-40-9 | 1 ppm | 3 ppm | —— | —— |
Bromine | 7726-95-6 | 0.1 ppm | 0.3 ppm | —— | —— |
Bromine pentafluoride | 7789-30-2 | 0.1 ppm | 0.3 ppm | —— | —— |
Bromochloromethane (Chlorobromomethane) | 74-97-5 | 200 ppm | 250 ppm | —— | —— |
Bromoform | 15-25-2 | 0.5 ppm | 1.5 ppm | —— | X |
Butadiene (1,3-butadiene) | 106-99-0 | 1 ppm | 5 ppm | —— | —— |
Butane | 106-97-8 | 800 ppm | 1,000 ppm | —— | —— |
Butanethiol (Butyl mercaptan) | 109-79-5 | 0.5 ppm | 1.5 ppm | —— | —— |
2-Butanone (Methyl ethyl ketone) | 78-93-3 | 200 ppm | 300 ppm | —— | —— |
2-Butoxy ethanol (Butyl cellosolve) | 111-76-2 | 25 ppm | 38 ppm | —— | X |
n-Butyl acetate | 123-86-4 | 150 ppm | 200 ppm | —— | —— |
sec-Butyl acetate | 105-46-4 | 200 ppm | 250 ppm | —— | —— |
tert-Butyl acetate | 540-88-5 | 200 ppm | 250 ppm | —— | —— |
Butyl acrylate | 141-32-2 | 10 ppm | 20 ppm | —— | —— |
n-Butyl alcohol | 71-36-3 | —— | —— | 50 ppm | X |
sec-Butyl alcohol | 78-92-2 | 100 ppm | 150 ppm | —— | —— |
tert-Butyl alcohol | 75-65-0 | 100 ppm | 150 ppm | —— | —— |
Butylamine | 109-73-9 | —— | —— | 5 ppm | X |
Butyl cellosolve (2-Butoxy ethanol) | 111-76-2 | 25 ppm | 38 ppm | —— | —— |
tert-Butyl chromate (as Cr) | 1189-85-1 | 0.005 mg/m3 | —— | 0.1 mg/m3 | X |
n-Butyl glycidyl ether (BGE) | 2426-08-6 | 25 ppm | 38 ppm | —— | —— |
n-Butyl lactate | 138-22-7 | 5 ppm | 10 ppm | —- | —— |
Butyl mercaptan | 109-79-5 | 0.5 ppm | 1.5 ppm | —— | —— |
o-sec-Butylphenol | 89-72-5 | 5 ppm | 10 ppm | —— | X |
p-tert-Butyl-toluene | 98-51-1 | 10 ppm | 20 ppm | —— | —— |
Cadmium oxide fume (as Cd) | 1306-19-0 | 0.005 mg/m3 | —— | —— | —— |
Cadmium dust and salts (as Cd) | 7440-43-9 | 0.005 mg/m3 | —— | —— | —— |
Calcium arsenate | —— | 0.01 mg/m3 | —— | —— | —— |
Calcium carbonate | 1317-65-3 | —— | —— | —— | —— |
Total particulate | —— | 10 mg/m3 | 20 mg/m3 | —— | —— |
Respirable fraction | —— | 5 mg/m3 | 10 mg/m3 | —— | —— |
Calcium cyanamide | 156-62-7 | 0.5 mg/m3 | 1.5 mg/m3 | —— | —— |
Calcium hydroxide | 1305-62-0 | 5 mg/m3 | 10 mg/m3 | —— | —— |
Calcium oxide | 1305-78-8 | 2 mg/m3 | 4 mg/m3 | —— | —— |
Calcium silicate | 1344-95-2 | —— | —— | —— | —— |
Total particulate | —— | 10 mg/m3 | 20 mg/m3 | —— | —— |
Respirable fraction | —— | 5 mg/m3 | 10 mg/m3 | —— | —— |
Calcium sulfate | 7778-18-9 | —— | —— | —— | —— |
Total particulate | —— | 10 mg/m3 | 20 mg/m3 | —— | —— |
Respirable fraction | —— | 5 mg/m3 | 10 mg/m3 | —— | —— |
Camphor (synthetic) | 76-22-2 | 2 mg/m3 | 4 mg/m3 | —— | —— |
Caprolactam | 105-60-2 | —— | —— | —— | —— |
Dust | —— | 1 mg/m3 | 3 mg/m3 | —— | —— |
Vapor | —— | 5 ppm | 10 ppm | —— | —— |
Captafol (Difolatan) | 2425-06-1 | 0.1 mg/m3 | 0.3 mg/m3 | —— | X |
Captan | 133-06-2 | 5 mg/m3 | 10 mg/m3 | —— | —— |
Carbaryl (Sevin) | 63-25-2 | 5 mg/m3 | 10 mg/m3 | —— | —— |
Carbofuran (Furadon) | 1563-66-2 | 0.1 mg/m3 | 0.3 mg/m3 | —— | —— |
Carbon black | 1333-86-4 | 3.5 mg/m3 | 7 mg/m3 | —— | —— |
Carbon dioxide | 124-38-9 | 5,000 ppm | 30,000 ppm | —— | —— |
Carbon disulfide | 75-15-0 | 4 ppm | 12 ppm | —— | X |
Carbon monoxide | 630-08-0 | 35 ppm | 200 ppm (5 min.) | 1,500 ppm | —— |
Carbon tetrabromide | 558-13-4 | 0.1 ppm | 0.3 ppm | —— | —— |
Carbon tetrachloride (Tetrachloromethane) | 56-23-5 | 2 ppm | 4 ppm | —— | X |
Carbonyl chloride (Phosgene) | 7803-51-2 | 0.1 ppm | 0.3 ppm | —— | —— |
Carbonyl fluoride | 353-50-4 | 2 ppm | 5 ppm | —— | —— |
Catechol (Pyrocatechol) | 120-80-9 | 5 ppm | 10 ppm | —— | X |
Cellosolve acetate (2-Ethoxyethylacetate) | 111-15-9 | 5 ppm | 10 ppm | —— | X |
Cellulose (paper fiber) | 9004-34-6 | —— | —— | —— | —— |
Total particulate | —— | 10 mg/m3 | 20 mg/m3 | —— | —— |
Respirable fraction | —— | 5 mg/m3 | 10 mg/m3 | —— | —— |
Cesium hydroxide | 21351-79-1 | 2 mg/m3 | 4 mg/m3 | —— | —— |
Chlordane | 57-74-9 | 0.5 mg/m3 | 1.5 mg/m3 | —— | X |
Chlorinated camphene (Toxaphen) | 8001-35-2 | 0.5 mg/m3 | 1 mg/m3 | —— | X |
Chlorinated diphenyl oxide | 55720-99-5 | 0.5 mg/m3 | 1.5 mg/m3 | —— | —— |
Chlorine | 7782-50-5 | 0.5 ppm | —— | 1 ppm | —— |
Chlorine dioxide | 10049-04-4 | 0.1 ppm | 0.3 ppm | —— | —— |
Chlorine trifluoride | 7790-91-2 | —— | —— | 0.1 ppm | —— |
Chloroacetaldehyde | 107-20-0 | —— | —— | 1 ppm | —— |
a-Chloroacetophenone (Phenacyl chloride) | 532-21-4 | 0.05 ppm | 0.15 ppm | —— | —— |
Chloroacetyl chloride | 79-04-9 | 0.05 ppm | 0.15 ppm | —— | —— |
Chlorobenzene (Monochlorobenzene) | 108-90-7 | 75 ppm | 113 ppm | —— | —— |
o-Chlorobenzylidene malononitrile (OCBM) | 2698-41-1 | —— | —— | 0.05 ppm | X |
Chlorobromomethane | 74-97-5 | 200 ppm | 250 ppm | —— | —— |
2-Chloro-1, 3-butadiene (beta-Chloroprene) | 126-99-8 | 10 ppm | 20 ppm | —— | X |
Chlorodifluoromethane | 75-45-6 | 1,000 ppm | 1,250 ppm | —— | —— |
Chlorodiphenyl (42% Chlorine) (PCB) (Polychlorobiphenyls) | 53469-21-9 | 1 mg/m3 | 3 mg/m3 | —— | X |
Chlorodiphenyl (54% Chlorine) (Polychlorobiphenyls (PCB)) | 11097-69-1 | 0.5 mg/m3 | 1.5 mg/m3 | —— | X |
1-Chloro-2, 3-epoxypropane (Epichlorhydrin) | 106-89-8 | 2 ppm | 4 ppm | —— | X |
2-Chloroethanol (Ethylene chlorohydrin) | 107-07-3 | —— | —— | 1 ppm | X |
Chloroethylene (vinyl chloride) | 75-01-4 | 1 ppm | 5 ppm | —— | —— |
Chloroform (Trichloromethane) | 67-66-3 | 2 ppm | 4 ppm | —— | —— |
1-Chloro-1-nitropropane | 600-25-9 | 2 ppm | 4 ppm | —— | —— |
bis-Chloromethyl ether | 542-88-1 | —— | —— | —— | —— |
Chloromethyl methyl ether (Methyl chloromethyl ether) | 107-30-2 | —— | —— | —— | —— |
Chloropentafluoroethane | 76-15-3 | 1,000 ppm | 1,250 ppm | —— | —— |
Chloropicrin (Nitrotrichloromethane) | 76-06-2 | 0.1 ppm | 0.3 ppm | —— | —— |
beta-Chloroprene (2-Chloro-1, 3-butadiene) | 126-99-8 | 10 ppm | 20 ppm | —— | X |
o-Chlorostyrene | 2039-87-4 | 50 ppm | 75 ppm | —— | —— |
o-Chlorotoluene | 95-49-8 | 50 ppm | 75 ppm | —— | —— |
2-Chloro-6-trichloromethyl pyridine (Nitrapyrin) | 1929-82-4 | —— | —— | —— | —— |
Total particulate | —— | 10 mg/m3 | 20 mg/m3 | —— | —— |
Respirable fraction | —— | 5 mg/m3 | 10 mg/m3 | —— | —— |
Chlorpyrifos | 2921-88-2 | 0.2 mg/m3 | 0.6 mg/m3 | —— | X |
Chromic acid and chromates (as Cr) (when the compound is not | Varies with compound | —— | —— | 0.1 mg/m3 | —— |
Chromium | —— | —— | —— | —— | —— |
Chromium (VI) compounds (as Cr) (when the compound | —— | 0.005 mg/m3 | —— | —— | —— |
Chromium metal or Chromium (II) compounds Or Chromium (III) compounds | 7440-47-3 | 0.5 mg/m3 | —— | —— | —— |
Chromyl chloride (as Cr) | 14977-61-8 | 0.005 mg/m3 | —— | —— | —— |
Chrysene (Coal tar pitch volatiles) | 65996-93-2 | 0.2 mg/m3 | 0.6 mg/m3 | —— | —— |
Chrysotile (as asbestos) | —— | 0.1 f/cc | 1.0 f/cc (30 minutes) | —— | —— |
Clopidol | 2971-90-6 | —— | —— | —— | —— |
Total particulate | —— | 10 mg/m3 | 20 mg/m3 | —— | —— |
Respirable fraction | —— | 5 mg/m3 | 10 mg/m3 | —— | —— |
Coal dust (less than 5% SiO2) | —— | —— | —— | —— | —— |
Respirable fraction | —— | 2 mg/m3 | 4 mg/m3 | —— | —— |
Coal dust (greater than or equal to 5% SiO2) | —— | —— | —— | —— | —— |
Respirable fraction | —— | 0.1 mg/m3 | 0.3 mg/m3 | —— | —— |
Coal tar pitch volatiles (benzene soluble fraction) Acridine Anthracene Benzo (a) pyrene Chrysene Phenanthrene Pyrene | 65996-93-2 | 0.2 mg/m3 | 0.6 mg/m3 | —— | —— |
Cobalt, metal fume & dust (as Co) | 7440-48-4 | 0.05 mg/m3 | 0.15 mg/m3 | —— | —— |
Cobalt carbonyl (as Co) | 10210-68-1 | 0.1 mg/m3 | 0.3 mg/m3 | —— | —— |
Cobalt hydrocarbonyl (as Co) | 16842-03-8 | 0.1 mg/m3 | 0.3 mg/m3 | —— | —— |
Coke oven emissions | —— | 0.15 mg/m3 | —— | —— | —— |
Copper (as Cu) | 7440-50-8 | —— | —— | —— | —— |
Fume | —— | 0.1 mg/m3 | 0.3 mg/m3 | —— | —— |
Dusts and mists | —— | 1 mg/m3 | 3 mg/m3 | —— | —— |
Cotton dust (raw) (waste sorting, blending, cleaning, willowing and garetting) (see WAC 296-62-14533) | —— | 1 mg/m3 | —— | —— | —— |
Corundum (Aluminum oxide) | 7429-90-5 | —— | —— | —— | —— |
Total particulate | —— | 10 mg/m3 | 20 mg/m3 | —— | —— |
Respirable fraction | —— | 5 mg/m3 | 10 mg/m3 | —— | —— |
Crag herbicide (Sesone, Sodium-2, 4-dichloro-phenoxyethyl sulfate) | 136-78-7 | —— | —— | —— | —— |
Total particulate | —— | 10 mg/m3 | 20 mg/m3 | —— | —— |
Respirable fraction | —— | 5 mg/m3 | 10 mg/m3 | —— | —— |
Cresol (all isomers) | 1319-77-3 | 5 ppm | 10 ppm | —— | X |
Crocidolite (as asbestos) | —— | 0.1 f/cc | 1.0 f/cc (30 minutes) | —— | —— |
Crotonaldehyde | 123-73-9; 4170-30-3 | 2 ppm | 4 ppm | —— | —— |
Crufomate | 299-86-5 | 5 mg/m3 | 10 mg/m3 | —— | —— |
Cumene | 98-82-8 | 50 ppm | 75 ppm | —— | X |
Cyanamide | 420-04-2 | 2 mg/m3 | 4 mg/m3 | —— | —— |
Cyanide (as CN) | Varies with compound | 5 mg/m3 | 10 mg/m3 | —— | X |
Cyanogen | 460-19-5 | 10 ppm | 20 ppm | —— | —— |
Cyanogen chloride | 506-77-4 | —— | —— | 0.3 ppm | —— |
Cyclohexane | 110-82-7 | 300 ppm | 375 ppm | —— | —— |
Cyclohexanol | 108-93-0 | 50 ppm | 75 ppm | —— | X |
Cyclohexanone | 108-94-1 | 25 ppm | 38 ppm | —— | X |
Cyclohexene | 110-83-8 | 300 ppm | 375 ppm | —— | —— |
Cyclohexylamine | 108-91-8 | 10 ppm | 20 ppm | —— | —— |
Cyclonite (RDX) | 121-82-4 | 1.5 mg/m3 | 3.0 mg/m3 | —— | X |
Cyclopentadiene | 542-92-7 | 75 ppm | 113 ppm | —— | —— |
Cyclopentane | 287-92-3 | 600 ppm | 750 ppm | —— | —— |
Cyhexatin (Tricyclohexyltin hydroxide) | 13121-70-5 | 5 mg/m3 | 10 mg/m3 | —— | —— |
2,4-D (Dichlorophenoxy- acetic acid) | 94-75-7 | 10 mg/m3 | 20 mg/m3 | —— | —— |
DBCP (1,2-Dibromo-3- chloropropane) | 96-12-8 | 0.001 ppm | —— | 0.005 ppm | —— |
DDT (Dichlorodiphenyltri- chloroethane) | 50-29-3 | 1 mg/m3 | 3 mg/m3 | —— | X |
DDVP, (Dichlorvos) | 62-73-7 | 0.1 ppm | 0.3 ppm | —— | X |
Dasanit (Fensulfothion) | 115-90-2 | 0.1 mg/m3 | 0.3 mg/m3 | —— | —— |
Decaborane | 17702-41-9 | 0.05 ppm | 0.15 ppm | —— | X |
Demeton | 8065-48-3 | 0.01 ppm | 0.03 ppm | —— | X |
Diacetone alcohol (4-hydroxy-4-methyl- 2-pentanone) | 123-42-2 | 50 ppm | 75 ppm | —— | —— |
1, 2-Diaminoethane (Ethylenediamine) | 107-15-3 | 10 ppm | 20 ppm | —— | —— |
Diazinon | 333-41-5 | 0.1 mg/m3 | 0.3 mg/m3 | —— | X |
Diazomethane | 334-88-3 | 0.2 ppm | 0.6 ppm | —— | —— |
Diborane | 19287-45-7 | 0.1 ppm | 0.3 ppm | —— | —— |
Dibrom (see Naled) | 300-76-5 | 3 mg/m3 | 6 mg/m3 | —— | X |
1, 2-Dibromo-3-chloropropane (DBCP) | 96-12-8 | 0.001 ppm | —— | 0.005 ppm | —— |
2-N-Dibutylamino ethanol | 102-81-8 | 2 ppm | 4 ppm | —— | X |
Dibutyl phosphate | 107-66-4 | 1 ppm | 2 ppm | —— | —— |
Dibutyl phthalate | 84-74-2 | 5 mg/m3 | 10 mg/m3 | —— | —— |
Dichloroacetylene | 7572-29-4 | —— | ——- | 0.1 ppm | —— |
o-Dichlorobenzene | 95-50-1 | —— | —— | 50 ppm | —— |
p-Dichlorobenzene | 106-46-7 | 75 ppm | 110 ppm | —— | —— |
3, 3'-Dichlorobenzidine | 91-94-1 | —— | —— | —— | —— |
Dichlorodiphenyltri- chloroethane (DDT) | 50-29-3 | 1 mg/m3 | 3 mg/m3 | —— | X |
Dichlorodifluoromethane | 75-71-8 | 1,000 ppm | 1,250 ppm | —— | —— |
1, 3-Dichloro-5, 5-dimethyl hydantoin | 118-52-5 | 0.2 mg/m3 | 0.4 mg/m3 | —— | —— |
1, 1-Dichloroethane (Ethylidine chloride) | 75-34-3 | 100 ppm | 150 ppm | —— | —— |
1, 2-Dichloroethane (Ethylene dichloride) | 107-06-2 | 1 ppm | 2 ppm | —— | —— |
1, 1-Dichloroethylene (Vinylidene chloride) | 75-35-4 | 1 ppm | 3 ppm | —— | —— |
1, 2-Dichloroethylene (Acetylene dichloride) | 540-59-0 | 200 ppm | 250 ppm | —— | —— |
Dichloroethyl ether | 111-44-4 | 5 ppm | 10 ppm | —— | X |
Dichlorofluoromethane | 75-43-4 | 10 ppm | 20 ppm | —— | —— |
Dichloromethane (Methylene chloride) | 75-09-2 | 25 ppm | 125 ppm | —— | —— |
1, 1-Dichloro-1-nitroethane | 594-72-9 | 2 ppm | 10 ppm | —— | —— |
Dichlorophenoxyacetic acid (2, 4-D) | 94-75-7 | 10 mg/m3 | 20 mg/m3 | —— | —— |
1, 2-Dichloropropane (Propylene dichloride) | 78-87-5 | 75 ppm | 110 ppm | —— | —— |
Dichloropropene | 542-75-6 | 1 ppm | 3 ppm | —— | X |
2, 2-Dichloropropionic acid | 75-99-0 | 1 ppm | 3 ppm | —— | —— |
Dichlorotetrafluoroethane | 76-14-2 | 1,000 ppm | 1,250 ppm | —— | —— |
Dichlorvos (DDVP) | 62-73-7 | 0.1 ppm | 0.3 ppm | —— | X |
Dicrotophos | 141-66-2 | 0.25 mg/m3 | 0.75 mg/m3 | —— | X |
Dicyclopentadiene | 77-73-6 | 5 ppm | 10 ppm | —— | —— |
Dicyclopentadienyl iron | 102-54-5 | —— | —— | —— | —— |
Total particulate | —— | 10 mg/m3 | 20 mg/m3 | —— | —— |
Respirable fraction | —— | 5 mg/m3 | 10 mg/m3 | —— | —— |
Dieldrin | 60-57-1 | 0.25 mg/m3 | 0.75 mg/m3 | —— | X |
Diethanolamine | 111-42-2 | 3 ppm | 6 ppm | —— | —— |
Diethylamine | 109-89-7 | 10 ppm | 25 ppm | —— | —— |
2-Diethylaminoethanol | 100-37-8 | 10 ppm | 20 ppm | —— | X |
Diethylene triamine | 111-40-0 | 1 ppm | 3 ppm | —— | X |
Diethyl ether (Ethyl ether) | 60-29-7 | 400 ppm | 500 ppm | —— | —— |
Diethyl ketone | 96-22-0 | 200 ppm | 250 ppm | —— | —— |
Diethyl phthalate | 84-66-2 | 5 mg/m3 | 10 mg/m3 | —— | —— |
Difluorodibromomethane | 75-61-6 | 100 ppm | 150 ppm | —— | —— |
Difolatan (Captafol) | 2425-06-1 | 0.1 mg/m3 | 0.3 mg/m3 | —— | X |
Diglycidyl ether (DGE) | 2238-07-5 | 0.1 ppm | 0.3 ppm | —— | —— |
Dihydroxybenzene (Hydroquinone) | 123-31-9 | 2 mg/m3 | 4 mg/m3 | —— | —— |
Diisobutyl ketone (2, 6- Dimethylheptanone) | 108-83-8 | 25 ppm | 38 ppm | —— | —— |
Diisopropylamine | 108-18-9 | 5 ppm | 10 ppm | —— | X |
Dimethoxymethane (Methylal) | 109-87-5 | 1,000 ppm | 1,250 ppm | —— | —— |
Dimethyl acetamide | 127-19-5 | 10 ppm | 20 ppm | —— | X |
Dimethylamine | 124-40-3 | 10 ppm | 20 ppm | —— | —— |
4-Dimethylaminoazo benzene | 60-11-7 | —— | —— | —— | —— |
Dimethylaminobenzene (Xylidene) | 1300-73-8 | 2 ppm | 4 ppm | —— | X |
Dimethylaniline (N, N-Dimethylaniline) | 121-69-7 | 5 ppm | 10 ppm | —— | X |
Dimethylbenzene (Xylene) | 1300-73-8 | 100 ppm | 150 ppm | —— | —— |
Dimethyl-1, 2-dibromo-2, 2-dichloroethyl phosphate (Naled) | 300-76-5 | 3 mg/m3 | 6 mg/m3 | —— | X |
Dimethylformamide | 68-12-2 | 10 ppm | 20 ppm | —— | X |
2, 6-Dimethylheptanone (Diisobutyl ketone) | 108-83-8 | 25 ppm | 38 ppm | —— | —— |
1, 1-Dimethylhydrazine | 57-14-7 | 0.5 ppm | 1.5 ppm | —— | X |
Dimethyl phthalate | 131-11-3 | 5 mg/m3 | 10 mg/m3 | —— | —— |
Dimethyl sulfate | 77-78-1 | 0.1 ppm | 0.3 ppm | —— | X |
Dinitolmide (3, 5-Dinitro-o-toluamide) | 148-01-6 | 5 mg/m3 | 10 mg/m3 | —— | —— |
Dinitrobenzene (all isomers - alpha, meta and para) | 528-29-0; 99-65-0; 100-25-4 | 0.15 ppm | 0.45 ppm | —— | X |
Dinitro-o-cresol | 534-52-1 | 0.2 mg/m3 | 0.6 mg/m3 | —— | X |
3, 5-Dinitro-o-toluamide (Dinitolmide) | 148-01-6 | 5 mg/m3 | 10 mg/m3 | —— | —— |
Dinitrotoluene | 25321-14-6 | 1.5 mg/m3 | 3 mg/m3 | —— | X |
Dioxane (Diethylene dioxide) | 123-91-1 | 25 ppm | 38 ppm | —— | X |
Dioxathion | 78-34-2 | 0.2 mg/m3 | 0.6 mg/m3 | —— | X |
Diphenyl (Biphenyl) | 92-52-4 | 0.2 ppm | 0.6 ppm | —— | —— |
Diphenylamine | 122-39-4 | 10 mg/m3 | 20 mg/m3 | —— | —— |
Diphenylmethane diisocyanate (Methylene bisphenyl isocyanate (MDI)) | 101-68-8 | —— | —— | 0.02 ppm | —— |
Dipropylene glycol methyl ether | 34590-94-8 | 100 ppm | 150 ppm | —— | X |
Dipropyl ketone | 123-19-3 | 50 ppm | 75 ppm | —— | —— |
Diquat | 85-00-7 | 0.5 mg/m3 | 1.5 mg/m3 | —— | —— |
Di-sec, Octyl phthalate (Di-2-ethylhexylphthalate) | 117-81-7 | 5 mg/m3 | 10 mg/m3 | —— | —— |
Disulfram | 97-77-8 | 2 mg/m3 | 4 mg/m3 | —— | —— |
Disulfoton | 298-04-4 | 0.1 mg/m3 | 0.3 mg/m3 | —— | X |
2, 6-Di-tert-butyl-p-cresol | 128-37-0 | 10 mg/m3 | 20 mg/m3 | —— | —— |
Diuron | 330-54-1 | 10 mg/m3 | 20 mg/m3 | —— | —— |
Divinyl benzene | 1321-74-0 | 10 ppm | 20 ppm | —— | —— |
Emery | 12415-34-8 | —— | —— | —— | —— |
Total particulate | —— | 10 mg/m3 | 20 mg/m3 | —— | —— |
Respirable fraction | —— | 5 mg/m3 | 10 mg/m3 | —— | —— |
Endosulfan (Thiodan) | 115-29-7 | 0.1 mg/m3 | 0.3 mg/m3 | —— | X |
Endrin | 72-20-8 | 0.1 mg/m3 | 0.3 mg/m3 | —— | X |
Epichlorhydrin (1-Chloro-2, 3-epoxypropane) | 106-89-8 | 2 ppm | 4 ppm | —— | X |
EPN | 2104-64-5 | 0.5 mg/m3 | 1.5 mg/m3 | —— | X |
1, 2-Epoxypropane (Propylene oxide) | 75-56-9 | 20 ppm | 30 ppm | —— | —— |
2, 3-Epoxy-1-propanol (Glycidol) | 556-52-5 | 25 ppm | 38 ppm | —— | —— |
Ethane | —— | Simple asphyxiant | —— | —— | —— |
Ethanethiol (Ethyl mercaptan) | 75-08-1 | 0.5 ppm | 1.5 ppm | —— | —— |
Ethanol (Ethyl alcohol) | 64-17-5 | 1,000 ppm | 1,250 ppm | —— | —— |
Ethanolamine (2-Aminoethanol) | 141-43-5 | 3 ppm | 6 ppm | —— | —— |
Ethion | 563-12-2 | 0.4 mg/m3 | 1.2 mg/m3 | —— | X |
2-Ethoxyethanol (Glycol monoethyl ether) | 110-80-5 | 5 ppm | 10 ppm | —— | X |
2-Ethoxyethyl acetate (Cellosolve acetate) | 111-15-9 | 5 ppm | 10 ppm | —— | X |
Ethyl acetate | 141-78-6 | 400 ppm | 500 ppm | —— | —— |
Ethyl acrylate | 140-88-5 | 5 ppm | 25 ppm | —— | X |
Ethyl alcohol (ethanol) | 64-17-5 | 1,000 ppm | 1,250 ppm | —— | —— |
Ethylamine | 75-04-07 | 10 ppm | 20 ppm | —— | —— |
Ethyl amyl ketone (5-Methyl-3-hepatone) | 541-85-5 | 25 ppm | 38 ppm | —— | —— |
Ethyl benzene | 100-41-4 | 100 ppm | 125 ppm | —— | —— |
Ethyl bromide | 74-96-4 | 200 ppm | 250 ppm | —— | —— |
Ethyl butyl ketone (3-Heptanone) | 106-35-4 | 50 ppm | 75 ppm | —— | —— |
Ethyl chloride | 75-00-3 | 1,000 ppm | 1,250 ppm | —— | —— |
Ethylene | 74-85-1 | Simple asphyxiant | —— | —— | —— |
Ethylene chlorohydrin (2-Chloroethanol) | 107-07-3 | —— | —— | 1 ppm | X |
Ethylenediamine (1,2- Diaminoethane) | 107-15-3 | 10 ppm | 20 ppm | —— | X |
Ethylene dibromide | 106-93-4 | 0.1 ppm | 0.5 ppm | —— | —— |
Ethylene dichloride (1,2-Dichloroethane) | 107-06-2 | 1 ppm | 2 ppm | —— | —— |
Ethylene glycol | 107-21-1 | —— | —— | 50 ppm | —— |
Ethylene glycol dinitrate | 628-96-6 | —— | 0.1 mg/m3 | —— | X |
Ethylene glycol monomethyl ether acetate (Methyl cellosolve acetate) | —— | 5 ppm | 10 ppm | —— | X |
Ethyleneimine | 151-56-4 | —— | —— | —— | X |
Ethylene oxide | 75-21-8 | 1 ppm | 5 ppm | —— | —— |
Ethyl ether (Diethyl ether) | 60-29-7 | 400 ppm | 500 ppm | —— | —— |
Ethyl formate | 109-94-4 | 100 ppm | 125 ppm | —— | —— |
Ethylidine chloride (1, 1-Dichloroethane) | 107-06-2 | 1 ppm | 2 ppm | —— | —— |
Ethylidene norbornene | 16219-75-3 | —— | —— | 5.0 ppm | —— |
Ethyl mercaptan (Ethanethiol) | 75-08-1 | 0.5 ppm | 1.5 ppm | —— | —— |
n-Ethylmorpholine | 100-74-3 | 5 ppm | 10 ppm | —— | X |
Ethyl sec-amyl ketone (5-methyl-3-heptanone) | 541-85-5 | 25 ppm | 38 ppm | —— | —— |
Ethyl silicate | 78-10-4 | 10 ppm | 20 ppm | —— | —— |
Fenamiphos | 22224-92-6 | 0.1 mg/m3 | 0.3 mg/m3 | —— | X |
Fensulfothion (Dasanit) | 115-90-2 | 0.1 mg/m3 | 0.3 mg/m3 | —— | —— |
Fenthion | 55-38-9 | 0.2 mg/m3 | 0.6 mg/m3 | —— | X |
Ferbam | —— | —— | —— | —— | —— |
Total particulate | 14484-64-1 | 10 mg/m3 | 20 mg/m3 | —— | —— |
Ferrovanadium dust | 12604-58-9 | 1 mg/m3 | 3 mg/m3 | —— | —— |
Fluorides (as F) | Varies with compound | 2.5 mg/m3 | 5 mg/m3 | —— | —— |
Fluorine | 7782-41-4 | 0.1 ppm | 0.3 ppm | —— | —— |
Fluorotrichloromethane (see Trichlorofluoro methane) | 75-69-4 | —— | —— | 1,000 ppm | —— |
Fonofos | 944-22-9 | 0.1 mg/m3 | 0.3 mg/m3 | —— | X |
Formaldehyde | 50-00-0 | 0.75 ppm | 2 ppm | —— | —— |
Formamide | 75-12-7 | 20 ppm | 30 ppm | —— | —— |
Formic acid | 64-18-6 | 5 ppm | 10 ppm | —— | —— |
Furadon (carbofuran) | 1563-66-2 | 0.1 mg/m3 | 0.3 mg/m3 | —— | —— |
Furfural | 98-01-1 | 2 ppm | 4 ppm | —— | X |
Furfuryl alcohol | 98-00-0 | 10 ppm | 15 ppm | —— | X |
Gasoline | 8006-61-9 | 300 ppm | 500 ppm | —— | —— |
Germanium tetrahydride | 7782-65-2 | 0.2 ppm | 0.6 ppm | —— | —— |
Glass, fibrous or dust | —— | 10 mg/m3 | 20 mg/m3 | —— | —— |
Glutaraldehyde | 111-30-8 | —— | —— | 0.2 ppm | —— |
Glycerin mist | 56-81-5 | —— | —— | —— | —— |
Total particulate | —— | 10 mg/m3 | 20 mg/m3 | —— | —— |
Respirable fraction | —— | 5 mg/m3 | 10 mg/m3 | —— | —— |
Glycidol (2, 3-Epoxy-1-propanol) | 556-52-5 | 25 ppm | 38 ppm | —— | —— |
Glycol monoethyl ether (2-Ethoxyethanol) | 110-80-5 | 5 ppm | 10 ppm | —— | X |
Grain dust (oat, wheat, barley) | —— | 10 mg/m3 | 20 mg/m3 | —— | —— |
Graphite, natural | 7782-42-5 | —— | —— | —— | —— |
Respirable particulate | —— | 2.5 mg/m3 | 5 mg/m3 | —— | —— |
Graphite, synthetic | —— | —— | —— | —— | —— |
Total particulate | —— | 10 mg/m3 | 20 mg/m3 | —— | —— |
Respirable fraction | —— | 5 mg/m3 | 10 mg/m3 | —— | —— |
Guthion (Azinphosmethyl) | 86-50-0 | 0.2 mg/m3 | 0.6 mg/m3 | —— | X |
Gypsum | 13397-24-5 | —— | —— | —— | —— |
Total particulate | —— | 10 mg/m3 | 20 mg/m3 | —— | —— |
Respirable fraction | —— | 5 mg/m3 | 10 mg/m3 | —— | —— |
Hafnium | 7440-58-6 | 0.5 mg/m3 | 1.5 mg/m3 | —— | —— |
Helium | —— | Simple asphyxiant | —— | —— | —— |
Heptachlor | 76-44-8 | 0.5 mg/m3 | 1.5 mg/m3 | —— | X |
Heptane (n-heptane) | 142-82-5 | 400 ppm | 500 ppm | —— | —— |
2-Heptanone (Methyl n-amyl ketone) | 110-43-0 | 50 ppm | 75 ppm | —— | —— |
3-Heptanone (Ethyl butyl ketone) | 106-35-4 | 50 ppm | 75 ppm | —— | —— |
Hexachlorobutadiene | 87-68-3 | 0.02 ppm | 0.06 ppm | —— | X |
Hexachlorocyclopentadiene | 77-47-4 | 0.01 ppm | 0.03 ppm | —— | —— |
Hexachloroethane | 67-72-1 | 1 ppm | 3 ppm | —— | X |
Hexachloronaphthalene | 1335-87-1 | 0.2 mg/m3 | 0.6 mg/m3 | —— | X |
Hexafluoroacetone | 684-16-2 | 0.1 ppm | 0.3 ppm | —— | X |
Hexane | —— | —— | —— | —— | —— |
n-hexane | 110-54-3 | 50 ppm | 75 ppm | —— | —— |
other isomers | Varies with compound | 500 ppm | 1,000 ppm | —— | —— |
2-Hexanone (Methyl-n-butyl ketone) | 591-78-6 | 5 ppm | 10 ppm | —— | —— |
Hexone (Methyl isobutyl ketone) | 108-10-1 | 50 ppm | 75 ppm | —— | —— |
sec-Hexyl acetate | 108-84-9 | 50 ppm | 75 ppm | —— | —— |
Hexylene glycol | 107-41-5 | —— | —— | 25 ppm | —— |
Hydrazine | 302-01-2 | 0.1 ppm | 0.3 ppm | —— | X |
Hydrogen | —— | Simple asphyxiant | —— | —— | —— |
Hydrogenated terphenyls | 61788-32-7 | 0.5 ppm | 1.5 ppm | —— | —— |
Hydrogen bromide | 10035-10-6 | —— | —— | 3.0 ppm | —— |
Hydrogen chloride | 7647-01-0 | —— | —— | 5.0 ppm | —— |
Hydrogen cyanide | 74-90-8 | —— | 4.7 ppm | —— | X |
Hydrogen fluoride | 7664-39-3 | —— | —— | 3 ppm | —— |
Hydrogen peroxide | 7722-84-1 | 1 ppm | 3 ppm | —— | —— |
Hydrogen selenide (as Se) | 7783-07-5 | 0.05 ppm | 0.15 ppm | —— | —— |
Hydrogen sulfide | 7783-06-4 | 10 ppm | 15 ppm | —— | —— |
Hydroquinone (Dihydroxybenzene) | 123-31-9 | 2 mg/m3 | 4 mg/m3 | —— | —— |
4-Hydroxy-4-methyl-2-pentanone (Diacetone alcohol) | 123-42-2 | 50 ppm | 75 ppm | —— | —— |
2-Hydroxypropyl acrylate | 99-61-1 | 0.5 ppm | 1.5 ppm | —— | X |
Indene | 95-13-6 | 10 ppm | 20 ppm | —— | —— |
Indium and compounds (as In) | 7440-74-6 | 0.1 mg/m3 | 0.3 mg/m3 | —— | —— |
Iodine | 7553-56-2 | —— | —— | 0.1 ppm | —— |
Iodoform | 75-47-8 | 0.6 ppm | 1.8 ppm | —— | —— |
Iron oxide dust and fume (as Fe) | 1309-37-1 | —— | —— | —— | —— |
Total particulate | —— | 5 mg/m3 | 10 mg/m3 | —— | —— |
Iron pentacarbonyl (as Fe) | 13463-40-6 | 0.1 ppm | 0.2 ppm | —— | —— |
Iron salts, soluble (as Fe) | Varies with compound | 1 mg/m3 | 3 mg/m3 | —— | —— |
Isoamyl acetate | 123-92-2 | 100 ppm | 150 ppm | —— | —— |
Isoamyl alcohol (primary and secondary) | 123-51-3 | 100 ppm | 125 ppm | —— | —— |
Isobutyl acetate | 110-19-0 | 150 ppm | 188 ppm | —— | —— |
Isobutyl alcohol | 78-83-1 | 50 ppm | 75 ppm | —— | —— |
Isooctyl alcohol | 26952-21-6 | 50 ppm | 75 ppm | —— | X |
Isophorone | 78-59-1 | 4 ppm | —— | 5 ppm | —— |
Isophorone diisocyanate | 4098-71-9 | 0.005 ppm | 0.02 ppm | —— | X |
Isopropoxyethanol | 109-59-1 | 25 ppm | 38 ppm | —— | —— |
Isopropyl acetate | 108-21-4 | 250 ppm | 310 ppm | —— | —— |
Isopropyl alcohol | 67-63-0 | 400 ppm | 500 ppm | —— | —— |
Isopropylamine | 75-31-0 | 5 ppm | 10 ppm | —— | —— |
N-Isopropylaniline | 768-52-5 | 2 ppm | 4 ppm | —— | X |
Isopropyl ether | 108-20-3 | 250 ppm | 313 ppm | —— | —— |
Isopropyl glycidyl ether (IGE) | 4016-14-2 | 50 ppm | 75 ppm | ——- | —— |
Kaolin | —— | —— | —— | —— | —— |
Total particulate | —— | 10 mg/m3 | 20 mg/m3 | —— | —— |
Respirable fraction | —— | 5 mg/m3 | 10 mg/m3 | —— | —— |
Ketene | 463-51-4 | 0.5 mg/m3 | 1.5 mg/m3 | —— | —— |
Lannate (Methomyl) | 16752-77-5 | 2.5 mg/m3 | 5 mg/m3 | —— | —— |
Lead, inorganic (as Pb) | 7439-92-1 | 0.05 mg/m3 | —— | —— | —— |
Lead arsenate (as Pb) | 3687-31-8 | 0.05 mg/m3 | —— | —— | —— |
Lead chromate (as Pb) | 7758-97-6 | 0.05 mg/m3 | —— | —— | —— |
Limestone | 1317-65-3 | —— | —— | —— | —— |
Total particulate | —— | 10 mg/m3 | 20 mg/m3 | —— | —— |
Respirable fraction | —— | 5 mg/m3 | 10 mg/m3 | —— | —— |
Lindane | 58-89-9 | 0.5 mg/m3 | 1.5 mg/m3 | —— | X |
Lithium hydride | 7580-67-8 | 0.025 mg/m3 | 0.075 mg/m3 | —— | —— |
L.P.G. (liquified petroleum gas) | 68476-85-7 | 1,000 ppm | 1,250 ppm | —— | —— |
Magnesite | 546-93-0 | —— | —— | —— | —— |
Total particulate | —— | 10 mg/m3 | 20 mg/m3 | —— | —— |
Respirable fraction | —— | 5 mg/m3 | 10 mg/m3 | —— | —— |
Magnesium oxide fume | 1309-48-4 | —— | —— | —— | —— |
Total particulate | —— | 10 mg/m3 | 20 mg/m3 | —— | —— |
Malathion | 121-75-5 | —— | —— | —— | —— |
Total particulate | —— | 10 mg/m3 | 20 mg/m3 | —— | X |
Maleic anhydride | 108-31-6 | 0.25 ppm | 0.75 ppm | —— | —— |
Manganese and compounds (as Mn) | 7439-96-5 | —— | —— | 5 mg/m3 | —— |
Manganese cyclopentadienyl tricarbonyl (as Mn) | 12079-65-1 | 0.1 mg/m3 | 0.3 mg/m3 | —— | X |
Manganese tetroxide and fume (as Mn) | 7439-96-5 | 1 mg/m3 | 3 mg/m3 | —— | —— |
Marble | 1317-65-3 | —— | —— | —— | —— |
Total particulate | —— | 10 mg/m3 | 20 mg/m3 | —— | —— |
Respirable fraction | —— | 5 mg/m3 | 10 mg/m3 | —— | —— |
MBOCA (4, 4'-Methylene bis (2-chloro-aniline)) | 101-14-4 | —— | —— | —— | X |
MDA (4, 4-Methylene dianiline) | 101-77-9 | 0.01 ppm | 0.1 ppm | —— | X |
MDI (Methylene bisphenyl isocyanate) (Diphenylmethane diisocyanate) | 101-68-8 | —— | —— | 0.02 ppm | —— |
MEK (Methyl ethyl ketone) (2-Butanone) | 78-93-3 | 200 ppm | 300 ppm | —— | —— |
MEKP (Methyl ethyl ketone peroxide) | 1338-23-4 | —— | —— | 0.2 ppm | —— |
Mercury (as Hg) | 7439-97-6 | —— | —— | —— | —— |
Aryl and inorganic | —— | 0.1 mg/m3 | 0.3 mg/m3 | —— | X |
Organo-alkyl compounds | —— | 0.01 mg/m3 | 0.03 mg/m3 | —— | X |
Vapor | —— | 0.05 mg/m3 | 0.15 mg/m3 | —— | X |
Mesityl oxide | 141-79-7 | 15 ppm | 25 ppm | —— | —— |
Methacrylic acid | 79-41-4 | 20 ppm | 30 ppm | —— | X |
Methane | —— | Simple asphyxiant | —— | —— | —— |
Methanethiol (Methyl mercaptan) | 74-93-1 | 0.5 ppm | 1.5 ppm | —— | —— |
Methanol (Methyl alcohol) | 67-56-1 | 200 ppm | 250 ppm | —— | X |
Methomyl (lannate) | 16752-77-5 | 2.5 mg/m3 | 5 mg/m3 | —— | —— |
Methoxychlor | 72-43-5 | —— | —— | —— | —— |
Total particulate | —— | 10 mg/m3 | 20 mg/m3 | —— | —— |
2-Methoxyethanol (Methyl cellosolve) | 109-86-4 | 5 ppm | 10 ppm | —— | X |
2-Methoxyethyl acetate (Methyl cellosolve acetate) | 110-49-6 | 5 ppm | 10 ppm | —— | X |
4-Methoxyphenol | 150-76-5 | 5 mg/m3 | 10 mg/m3 | —— | —— |
Methyl acetate | 79-20-9 | 200 ppm | 250 ppm | —— | —— |
Methyl acetylene (propyne) | 74-99-7 | 1,000 ppm | 1,250 ppm | —— | —— |
Methyl acetylene-propadiene mixture (MAPP) | —— | 1,000 ppm | 1,250 ppm | —— | —— |
Methyl acrylate | 96-33-3 | 10 ppm | 20 ppm | —— | X |
Methylacrylonitrile | 126-98-7 | 1 ppm | 3 ppm | —— | X |
Methylal (Dimethoxy-methane) | 109-87-5 | 1,000 ppm | 1,250 ppm | —— | —— |
Methyl alcohol (methanol) | 67-56-1 | 200 ppm | 250 ppm | —— | X |
Methylamine | 74-89-5 | 10 ppm | 20 ppm | —— | —— |
Methyl amyl alcohol (Methyl isobutyl carbinol) | 108-11-2 | 25 ppm | 40 ppm | —— | X |
Methyl n-amyl ketone (2-Heptanone) | 110-43-0 | 50 ppm | 75 ppm | —— | —— |
N-Methyl aniline (Monomethyl aniline) | 100-61-8 | 0.5 ppm | 1.5 ppm | —— | X |
Methyl bromide | 74-83-9 | 5 ppm | 10 ppm | —— | X |
Methyl-n-butyl ketone (2-Hexanone) | 591-78-6 | 5 ppm | 10 ppm | —— | —— |
Methyl cellosolve (2-Methoxyethanol) | 109-86-4 | 5 ppm | 10 ppm | —— | X |
Methyl cellosolve acetate (2-Methoxyethyl acetate) | 110-49-6 | 5 ppm | 10 ppm | —— | X |
Methyl chloride | 74-87-3 | 50 ppm | 100 ppm | —— | —— |
Methyl chloroform (1, 1, 1-trichlorethane) | 71-55-6 | 350 ppm | 450 ppm | —— | —— |
Methyl chloromethyl ether (chloromethyl methyl ether) | 107-30-2 | —— | —— | —— | —— |
Methyl 2-cyanoacrylate | 137-05-3 | 2 ppm | 4 ppm | —— | —— |
Methylcyclohexane | 108-87-2 | 400 ppm | 500 ppm | —— | —— |
Methylcyclohexanol | 25639-42-3 | 50 ppm | 75 ppm | —— | —— |
Methylcyclohexanone | 583-60-8 | 50 ppm | 75 ppm | —— | X |
Methylcyclopentadienyl manganese tricarbonyl (as Mn) | 12108-13-3 | 0.2 mg/m3 | 0.6 mg/m3 | —— | X |
Methyl demeton | 8022-00-2 | 0.5 mg/m3 | 1.5 mg/m3 | —— | X |
Methylene bisphenyl isocyanate (MDI) (Diphenylmethane diisocyanate) | 101-68-8 | —— | —— | 0.02 ppm | —— |
4, 4'-Methylene bis (2-chloro-aniline) (MBOCA) | 101-14-4 | —— | —— | —— | X |
Methylene bis (4-cyclohexylisocyanate) | 5124-30-1 | —— | —— | 0.01 ppm | —— |
Methylene chloride (Dichloromethane) | 75-09-2 | 25 ppm | 125 ppm | —— | —— |
4, 4-Methylene dianiline (MDA) | 101-77-9 | 0.01 ppm | 0.1 ppm | —— | X |
Methyl ethyl ketone (MEK) (2-Butanone) | 78-93-3 | 200 ppm | 300 ppm | —— | —— |
Methyl ethyl ketone peroxide (MEKP) | 1338-23-4 | —— | —— | 0.2 ppm | —— |
Methyl formate | 107-31-3 | 100 ppm | 150 ppm | —— | —— |
5-Methyl-3-heptanone (Ethyl amyl ketone) | 541-85-5 | 25 ppm | 38 ppm | —— | —— |
Methyl hydrazine (Monomethyl hydrazine) | 60-34-4 | —— | —— | 0.2 ppm | X |
Methyl iodide | 74-88-4 | 2 ppm | 4 ppm | —— | X |
Methyl isoamyl ketone | 110-12-3 | 50 ppm | 75 ppm | —— | —— |
Methyl isobutyl carbinol (Methyl amyl alcohol) | 108-11-2 | 25 ppm | 40 ppm | —— | X |
Methyl isobutyl ketone (Hexone) | 108-10-1 | 50 ppm | 75 ppm | —— | —— |
Methyl isocyanate | 624-83-9 | 0.02 ppm | 0.06 ppm | —— | X |
Methyl isopropyl ketone | 563-80-4 | 200 ppm | 250 ppm | —— | —— |
Methyl mercaptan (Methanethiol) | 74-93-1 | 0.5 ppm | 1.5 ppm | —— | —— |
Methyl methacrylate | 80-62-6 | 100 ppm | 150 ppm | —— | —— |
Methyl parathion | 298-00-0 | 0.2 mg/m3 | 0.6 mg/m3 | —— | X |
Methyl propyl ketone (2-Pentanone) | 107-87-9 | 200 ppm | 250 ppm | —— | —— |
Methyl silicate | 684-84-5 | 1 ppm | 3 ppm | —— | —— |
alpha-Methyl styrene | 98-83-9 | 50 ppm | 100 ppm | —— | —— |
Mevinphos (Phosdrin) | 7786-34-7 | 0.01 ppm | 0.03 ppm | —— | X |
Metribuzin | 21087-64-9 | 5 mg/m3 | 10 mg/m3 | —— | —— |
Mica (Silicates) Respirable fraction | 12001-26-2 | 3 mg/m3 | 6 mg/m3 | —— | —— |
Molybdenum (as Mo) | 7439-98-7 | —— | —— | —— | —— |
Soluble compounds | —— | 5 mg/m3 | 10 mg/m3 | —— | —— |
Insoluble compounds | —— | 10 mg/m3 | 20 mg/m3 | —— | —— |
Monochlorobenzene (Chlorobenzene) | 108-90-7 | 75 ppm | 113 ppm | —— | —— |
Monocrotophos (Azodrin) | 6923-22-4 | 0.25 mg/m3 | 0.75 mg/m3 | —— | —— |
Monomethyl aniline (N-Methyl aniline) | 100-61-8 | 0.5 ppm | 1.5 ppm | —— | X |
Monomethyl hydrazine | —— | —— | —— | 0.2 ppm | —— |
Morpholine | 110-91-8 | 20 ppm | 30 ppm | —— | X |
Naled (Dibrom) | 300-76-5 | 3 mg/m3 | 6 mg/m3 | —— | X |
Naphtha | 8030-30-6 | 100 ppm | 150 ppm | —— | X |
Naphthalene | 91-20-3 | 10 ppm | 15 ppm | —— | —— |
alpha-Naphthylamine | 134-32-7 | —— | —— | —— | —— |
beta-Naphthylamine | 91-59-8 | —— | —— | —— | —— |
Neon | 7440-01-9 | Simple asphyxiant | —— | —— | —— |
Nickel carbonyl (as Ni) | 13463-39-3 | 0.001 ppm | 0.003 ppm | —— | —— |
Nickel (as Ni) | 7440-02-0 | —— | —— | —— | —— |
Metal and insoluble compounds | —— | 1 mg/m3 | 3 mg/m3 | —— | —— |
Soluble compounds | —— | 0.1 mg/m3 | 0.3 mg/m3 | —— | —— |
Nicotine | 54-11-5 | 0.5 mg/m3 | 1.5 mg/m3 | —— | X |
Nitrapyrin (2-Chloro-6 trichloromethyl pyridine) | 1929-82-4 | —— | —— | —— | —— |
Total particulate | —— | 10 mg/m3 | 20 mg/m3 | —— | —— |
Respirable fraction | —— | 5 mg/m3 | 10 mg/m3 | —— | —— |
Nitric acid | 7697-37-2 | 2 ppm | 4 ppm | —— | —— |
Nitric oxide | 10102-43-9 | 25 ppm | 38 ppm | —— | —— |
p-Nitroaniline | 100-01-6 | 3 mg/m3 | 6 mg/m3 | —— | X |
Nitrobenzene | 98-95-3 | 1 ppm | 3 ppm | —— | X |
4-Nitrobiphenyl | 92-93-3 | —— | —— | —— | —— |
p-Nitrochlorobenzene | 100-00-5 | 0.5 mg/m3 | 1.5 mg/m3 | —— | X |
4-Nitrodiphenyl | —— | —— | —— | —— | —— |
Nitroethane | 79-24-3 | 100 ppm | 150 ppm | —— | —— |
Nitrogen | 7727-37-9 | Simple asphyxiant | —— | —— | —— |
Nitrogen dioxide | 10102-44-0 | —— | 1 ppm | —— | —— |
Nitrogen oxide (Nitrous oxide) | 10024-97-2 | 50 ppm | 75 ppm | —— | —— |
Nitrogen trifluoride | 7783-54-2 | 10 ppm | 20 ppm | —— | —— |
Nitroglycerin | 55-63-0 | —— | 0.1 mg/m3 | —— | X |
Nitromethane | 75-52-5 | 100 ppm | 150 ppm | —— | —— |
1-Nitropropane | 108-03-2 | 25 ppm | 38 ppm | —— | —— |
2-Nitropropane | 79-46-9 | 10 ppm | 20 ppm | —— | —— |
N-Nitrosodimethylamine | 62-75-9 | —— | —— | —— | —— |
Nitrotoluene | —— | —— | —— | —— | —— |
o-isomer | 88-72-2 | 2 ppm | 4 ppm | —— | X |
m-isomer | 98-08-2 | 2 ppm | 4 ppm | —— | X |
p-isomer | 99-99-0 | 2 ppm | 4 ppm | —— | X |
Nitrotrichloromethane (Chloropicrin) | 76-06-2 | 0.1 ppm | 0.3 ppm | —— | —— |
Nitrous oxide (Nitrogen oxide) | 10024-97-2 | 50 ppm | 75 ppm | —— | —— |
Nonane | 111-84-2 | 200 ppm | 250 ppm | —— | —— |
Nuisance dusts (see Particulates not otherwise regulated) | —— | —— | —— | —— | —— |
Octachloronaphthalene | 2234-13-1 | 0.1 mg/m3 | 0.3 mg/m3 | —— | X |
Octane | 111-65-9 | 300 ppm | 375 ppm | —— | —— |
Oil mist mineral (particulate) | 8012-95-1 | 5 mg/m3 | 10 mg/m3 | —— | —— |
Osmium tetroxide (as Os) | 20816-12-0 | 0.0002 ppm | 0.0006 ppm | —— | —— |
Oxalic acid | 144-62-7 | 1 mg/m3 | 2 mg/m3 | —— | —— |
Oxygen See requirements in other chapters such as: Confined spaces; chapter waste operations; chapter Oxygen deficient atmospheres | —— | —— | —— | —— | —— |
Oxygen difluoride | 7783-41-7 | —— | —— | 0.05 ppm | —— |
Ozone | 10028-15-6 | 0.1 ppm | 0.3 ppm | —— | —— |
Paper fiber (Cellulose) | 9004-34-6 | —— | —— | —— | —— |
Total particulate | —— | 10 mg/m3 | 20 mg/m3 | —— | —— |
Respirable fraction | —— | 5 mg/m3 | 10 mg/m3 | —— | —— |
Paraffin wax fume | 8002-74-2 | 2 mg/m3 | 4 mg/m3 | —— | —— |
Paraquat | —— | —— | —— | —— | —— |
Respirable fraction | 4685-14-7 | 0.1 mg/m3 | 0.3 mg/m3 | —— | X |
| 1910-42-5 | | | | |
| 2074-50-2 | | | | |
Parathion | 56-38-2 | 0.1 mg/m3 | 0.3 mg/m3 | —— | X |
Particulate polycyclic aromatic hydrocarbons (see coal tar pitch volatiles) | | | | —— | —— |
Particulates not otherwise regulated | —— | —— | —— | —— | —— |
Total particulate | —— | 10 mg/m3 | 20 mg/m3 | —— | —— |
Respirable fraction | —— | 5 mg/m3 | 10 mg/m3 | —— | —— |
Pentaborane | 19624-22-7 | 0.005 ppm | 0.015 ppm | —— | —— |
Pentachloronaphthalene | 1321-64-8 | 0.5 mg/m3 | 1.5 mg/m3 | —— | X |
Pentachlorophenol | 87-86-5 | 0.5 mg/m3 | 1.5 mg/m3 | —— | X |
Pentaerythritol | 115-77-5 | —— | —— | —— | —— |
Total particulate | —— | 10 mg/m3 | 20 mg/m3 | —— | —— |
Respirable fraction | —— | 5 mg/m3 | 10 mg/m3 | —— | —— |
Pentane | 109-66-0 | 600 ppm | 750 ppm | —— | —— |
2-Pentanone (methyl propyl ketone) | 107-87-9 | 200 ppm | 250 ppm | —— | —— |
Perchloroethylene (tetrachloroethylene) | 127-18-4 | 25 ppm | 38 ppm | —— | —— |
Perchloromethyl mercaptan | 594-42-3 | 0.1 ppm | 0.3 ppm | —— | —— |
Perchloryl fluoride | 7616-94-6 | 3 ppm | 6 ppm | —— | —— |
Perlite | —— | —— | —— | —— | —— |
Total particulate | —— | 10 mg/m3 | 20 mg/m3 | —— | —— |
Respirable fraction | —— | 5 mg/m3 | 10 mg/m3 | —— | —— |
Petroleum distillates (Naptha, rubber solvent) | —— | 100 ppm | 150 ppm | —— | —— |
Phenacyl chloride (a-Chloroacetophenone) | 532-21-4 | 0.05 ppm | 0.15 ppm | —— | —— |
Phenol | 108-95-2 | 5 ppm | 10 ppm | —— | X |
Phenothiazine | 92-84-2 | 5 mg/m3 | 10 mg/m3 | —— | X |
p-Phenylene diamine | 106-50-3 | 0.1 mg/m3 | 0.3 mg/m3 | —— | X |
Phenyl ether (vapor) | 101-84-8 | 1 ppm | 3 ppm | —— | —— |
Phenyl ether-diphenyl mixture (vapor) | —— | 1 ppm | 3 ppm | —— | —— |
Phenylethylene (Styrene) | 100-42-5 | 50 ppm | 100 ppm | —— | —— |
Phenyl glycidyl ether (PGE) | 122-60-1 | 1 ppm | 3 ppm | —— | —— |
Phenylhydrazine | 100-63-0 | 5 ppm | 10 ppm | —— | X |
Phenyl mercaptan | 108-98-5 | 0.5 ppm | 1.5 ppm | —— | —— |
Phenylphosphine | 638-21-1 | —— | —— | 0.05 ppm | —— |
Phorate | 298-02-2 | 0.05 mg/m3 | 0.2 mg/m3 | —— | X |
Phosdrin (Mevinphos) | 7786-34-7 | 0.01 ppm | 0.03 ppm | —— | X |
Phosgene (carbonyl chloride) | 75-44-5 | 0.1 ppm | 0.3 ppm | —— | —— |
Phosphine | 7803-51-2 | 0.3 ppm | 1 ppm | —— | —— |
Phosphoric acid | 7664-38-2 | 1 mg/m3 | 3 mg/m3 | —— | —— |
Phosphorus (yellow) | 7723-14-0 | 0.1 mg/m3 | 0.3 mg/m3 | —— | —— |
Phosphorous oxychloride | 10025-87-3 | 0.1 ppm | 0.3 ppm | —— | —— |
Phosphorus pentachloride | 10026-13-8 | 0.1 ppm | 0.3 ppm | —— | —— |
Phosphorus pentasulfide | 1314-80-3 | 1 mg/m3 | 3 mg/m3 | —— | —— |
Phosphorus trichloride | 12-2-19 | 0.2 ppm | 0.5 ppm | —— | —— |
Phthalic anhydride | 85-44-9 | 1 ppm | 3 ppm | —— | —— |
m-Phthalodinitrile | 626-17-5 | 5 mg/m3 | 10 mg/m3 | —— | —— |
Picloram | 1918-02-1 | —— | —— | —— | —— |
Total particulate | —— | 10 mg/m3 | 20 mg/m3 | —— | —— |
Respirable fraction | —— | 5 mg/m3 | 10 mg/m3 | —— | —— |
Picric acid (2, 4, 6-Trinitrophenol) | 88-89-1 | 0.1 mg/m3 | 0.3 mg/m3 | —— | X |
Pindone (2-Pivalyl-1, 3-indandione, Pival) | 83-26-1 | 0.1 mg/m3 | 0.3 mg/m3 | —— | —— |
Piperazine dihydrochloride | 142-64-3 | 5 mg/m3 | 10 mg/m3 | —— | —— |
Pival (Pindone) | 83-26-1 | 0.1 mg/m3 | 0.3 mg/m3 | —— | —— |
Plaster of Paris | 26499-65-0 | —— | —— | —— | —— |
Total particulate | —— | 10 mg/m3 | 20 mg/m3 | —— | —— |
Respirable fraction | —— | 5 mg/m3 | 10 mg/m3 | —— | —— |
Platinum (as Pt) | 7440-06-4 | —— | —— | —— | —— |
Metal | —— | 1 mg/m3 | 3 mg/m3 | —— | —— |
Soluble salts | —— | 0.002 mg/m3 | 0.006 mg/m3 | —— | —— |
Polychlorobiphenyls (Chlorodiphenyls) | —— | —— | —— | —— | —— |
42% Chlorine (PCB) | 53469-21-9 | 1 mg/m3 | 3 mg/m3 | —— | X |
54% Chlorine (PCB) | 11097-69-1 | 0.5 mg/m3 | 1.5 mg/m3 | —— | X |
Portland cement | 65997-15-1 | —— | —— | —— | —— |
Total particulate | —— | 10 mg/m3 | 20 mg/m3 | —— | —— |
Respirable fraction | —— | 5 mg/m3 | 10 mg/m3 | —— | —— |
Potassium hydroxide | 1310-58-3 | —— | —— | 2 mg/m3 | —— |
Propane | 74-98-6 | 1,000 ppm | 1,250 ppm | —— | —— |
Propargyl alcohol | 107-19-7 | 1 ppm | 3 ppm | —— | X |
beta-Propiolactone | 57-57-8 | —— | —— | —— | —— |
Propionic acid | 79-09-4 | 10 ppm | 20 ppm | —— | —— |
Propoxur (Baygon) | 114-26-1 | 0.5 mg/m3 | 1.5 mg/m3 | —— | —— |
n-Propyl acetate | 109-60-4 | 200 ppm | 250 ppm | —— | —— |
n-Propyl alcohol | 71-23-8 | 200 ppm | 250 ppm | —— | X |
n-Propyl nitrate | 627-13-4 | 25 ppm | 40 ppm | —— | —— |
Propylene | —— | Simple asphyxiant | —— | —— | —— |
Propylene dichloride (1, 2-Dichloropropane) | 78-87-5 | 75 ppm | 110 ppm | —— | —— |
Propylene glycol dinitrate | 6423-43-4 | 0.05 ppm | 0.15 ppm | —— | X |
Propylene glycol monomethyl ether | 107-98-2 | 100 ppm | 150 ppm | —— | —— |
Propylene imine | 75-55-8 | 2 ppm | 4 ppm | —— | X |
Propylene oxide (1,2- Epoxypropane) | 75-56-9 | 20 ppm | 30 ppm | —— | —— |
Propyne (Methyl acetylene) | 74-99-7 | 1,000 ppm | 1,250 ppm | —— | —— |
Pyrethrum | 8003-34-7 | 5 mg/m3 | 10 mg/m3 | —— | —— |
Pyridine | 110-86-1 | 5 ppm | 10 ppm | —— | —— |
Pyrocatachol (Catechol) | 120-80-9 | 5 ppm | 10 ppm | —— | X |
Quinone (p-Benzoquinone) | 106-51-4 | 0.1 ppm | 0.3 ppm | —— | —— |
RDX (Cyclonite) | —— | 1.5 mg/m3 | 3 mg/m3 | —— | X |
Resorcinol | 108-46-3 | 10 ppm | 20 ppm | —— | —— |
Rhodium (as Rh) | 7440-16-6 | —— | —— | —— | —— |
Insoluble compounds, metal fumes and dusts | —— | 0.1 mg/m3 | 0.3 mg/m3 | —— | —— |
Soluble compounds, salts | —— | 0.001 mg/m3 | 0.003 mg/m3 | —— | —— |
Ronnel | 299-84-3 | 10 mg/m3 | 20 mg/m3 | —— | —— |
Rosin core solder, pyrolysis products (as formaldehyde) | 8050-09-7 | 0.1 mg/m3 | 0.3 mg/m3 | —— | —— |
Rotenone | 83-79-4 | 5 mg/m3 | 10 mg/m3 | —— | —— |
Rouge | —— | —— | —— | —— | —— |
Total particulate | —— | 10 mg/m3 | 20 mg/m3 | —— | —— |
Respirable fraction | —— | 5 mg/m3 | 10 mg/m3 | —— | —— |
Rubber solvent (naphtha) | 8030-30-6 | 100 ppm | 150 ppm | —— | —— |
Selenium compounds (as Se) | 7782-49-2 | 0.2 mg/m3 | 0.6 mg/m3 | —— | —— |
Selenium hexafluoride (as Se) | 7783-79-1 | 0.05 ppm | 0.15 ppm | —— | —— |
Sesone (Crag herbicide) | 136-78-7 | —— | —— | —— | —— |
Total particulate | —— | 10 mg/m3 | 20 mg/m3 | —— | —— |
Respirable fraction | —— | 5 mg/m3 | 10 mg/m3 | —— | —— |
Sevin (Carbaryl) | 63-25-2 | 5 mg/m3 | 10 mg/m3 | —— | —— |
Silane (see Silicon tetrahydride) | 7803-62-5 | 5 ppm | 10 ppm | —— | —— |
Silica, amorphous, precipitated and gel | 112926-00-8 | 6 mg/m3 | 12 mg/m3 | —— | —— |
Silica, amorphous, diatomaceous earth, containing less than 1% crystalline silica | 61790-53-2 | —— | —— | —— | —— |
Total particulate | —— | 6 mg/m3 | 12 mg/m3 | —— | —— |
Respirable fraction | —— | 3 mg/m3 | 6 mg/m3 | —— | —— |
Silica, crystalline cristobalite | —— | —— | —— | —— | —— |
Respirable fraction Applies where the exposure limit in chapter 296-840 WAC is not in effect. | 14464-46-1 | 0.05 mg/m3 | 0.15 mg/m3 | —— | —— |
Silica, crystalline quartz | —— | —— | —— | —— | —— |
Respirable fraction Applies where the exposure limit in chapter 296-840 WAC is not in effect. | 14808-60-7 | 0.1 mg/m3 | 0.3 mg/m3 | —— | —— |
Silica, crystalline tripoli (as quartz) | —— | —— | —— | —— | —— |
Respirable fraction | 1317-95-9 | 0.1 mg/m3 | 0.3 mg/m3 | —— | —— |
Silica, crystalline tridymite | —— | —— | —— | —— | —— |
Respirable fraction Applies where the exposure limit in chapter 296-840 WAC is not in effect. | 15468-32-3 | 0.05 mg/m3 | 0.15 mg/m3 | —— | —— |
Silica, fused | —— | —— | —— | —— | —— |
Respirable fraction | 60676-86-0 | 0.1 mg/m3 | 0.3 mg/m3 | —— | —— |
Silicates (less than 1% crystalline silica) | —— | —— | —— | —— | —— |
Mica | —— | —— | —— | —— | —— |
Respirable fraction | 12001-26-2 | 3 mg/m3 | 6 mg/m3 | —— | —— |
Soapstone | —— | —— | —— | —— | —— |
Total particulate | —— | 6 mg/m3 | 12 mg/m3 | —— | —— |
Respirable fraction | —— | 3 mg/m3 | 6 mg/m3 | —— | —— |
Talc (containing asbestos) (as asbestos) | —— | 0.1 f/cc | 1.0 f/cc (30 minutes) | —— | —— |
Talc (containing no asbestos) | —— | —— | —— | —— | —— |
Respirable fraction | 14807-96-6 | 2 mg/m3 | 4 mg/m3 | —— | —— |
Tremolite (asbestiform) (as asbestos) | —— | 0.1 f/cc | 1.0 f/cc (30 minutes) | —— | —— |
Silicon | 7440-21-3 | —— | —— | —— | —— |
Total particulate | —— | 10 mg/m3 | 20 mg/m3 | —— | —— |
Respirable fraction | —— | 5 mg/m3 | 10 mg/m3 | —— | —— |
Silicon carbide | 409-21-2 | —— | —— | —— | —— |
Total particulate | —— | 10 mg/m3 | 20 mg/m3 | —— | —— |
Respirable fraction | —— | 5 mg/m3 | 10 mg/m3 | —— | —— |
Silicon tetrahydride (Silane) | 7803-62-5 | 5 ppm | 10 ppm | —— | —— |
Silver, metal dust and soluble compounds (as Ag) | 7440-22-4 | 0.01 mg/m3 | 0.03 mg/m3 | —— | —— |
Soapstone | —— | —— | —— | —— | —— |
Total particulate | —— | 6 mg/m3 | 12 mg/m3 | —— | —— |
Respirable fraction | —— | 3 mg/m3 | 6 mg/m3 | —— | —— |
Sodium azide (as HN3 or NaN3) | 26628-22-8 | —— | —— | 0.1 ppm | X |
Sodium bisulfite | 7631-90-5 | 5 mg/m3 | 10 mg/m3 | —— | —— |
Sodium-2, 4-dichloro-phenoxyethyl sulfate (Crag herbicide) | 136-78-7 | —— | —— | —— | —— |
Total particulate | —— | 10 mg/m3 | 20 mg/m3 | —— | —— |
Respirable fraction | —— | 5 mg/m3 | 10 mg/m3 | —— | —— |
Sodium fluoroacetate | 62-74-8 | 0.05 mg/m3 | 0.15 mg/m3 | —— | X |
Sodium hydroxide | 1310-73-2 | —— | —— | 2 mg/m3 | —— |
Sodium metabisulfite | 7681-57-4 | 5 mg/m3 | 10 mg/m3 | —— | —— |
Starch | 9005-25-8 | —— | —— | —— | —— |
Total particulate | —— | 10 mg/m3 | 20 mg/m3 | —— | —— |
Respirable fraction | —— | 5 mg/m3 | 10 mg/m3 | —— | —— |
Stibine | 7803-52-3 | 0.1 ppm | 0.3 ppm | —— | —— |
Stoddard solvent | 8052-41-3 | 100 ppm | 150 ppm | —— | —— |
Strychnine | 57-24-9 | 0.15 mg/m3 | 0.45 mg/m3 | —— | —— |
Styrene (Phenylethylene, Vinyl benzene) | 100-42-5 | 50 ppm | 100 ppm | —— | —— |
Subtilisins | 9014-01-1 | —— | 0.00006 mg/m3 | —— | —— |
| | | (60 min.) | | |
Sucrose | 57-50-1 | —— | —— | —— | —— |
Total particulate | —— | 10 mg/m3 | 20 mg/m3 | —— | —— |
Respirable fraction | —— | 5 mg/m3 | 10 mg/m3 | —— | —— |
Sulfotep (TEDP) | 3689-24-5 | 0.2 mg/m3 | 0.6 mg/m3 | —— | X |
Sulfur dioxide | 7446-09-5 | 2 ppm | 5 ppm | —— | —— |
Sulfur hexafluoride | 2551-62-4 | 1,000 ppm | 1,250 ppm | —— | —— |
Sulfuric acid | 7664-93-9 | 1 mg/m3 | 3 mg/m3 | —— | —— |
Sulfur monochloride | 10025-67-9 | —— | —— | 1 ppm | —— |
Sulfur pentafluoride | 5714-22-1 | —— | —— | 0.01 ppm | —— |
Sulfur tetrafluoride | 7783-60-0 | —— | —— | 0.1 ppm | —— |
Sulfuryl fluoride | 2699-79-8 | 5 ppm | 10 ppm | —— | —— |
Sulprofos | 35400-43-2 | 1 mg/m3 | 3 mg/m3 | —— | —— |
Systox (Demeton) | 8065-48-3 | 0.01 ppm | 0.03 ppm | —— | X |
2, 4, 5-T (2, 4, 5- tri- chlorophenoxyacetic acid) | 93-76-5 | 10 mg/m3 | 20 mg/m3 | —— | —— |
Talc (containing asbestos) (as asbestos) | —— | 0.1 f/cc | 1.0 f/cc (30 minutes) | —— | —— |
Talc (containing no asbestos) | —— | —— | —— | —— | —— |
Respirable fraction | 14807-96-6 | 2 mg/m3 | 4 mg/m3 | —— | —— |
Tantalum | —— | —— | —— | —— | —— |
Metal and oxide dusts | 7440-25-7 | 5 mg/m3 | 10 mg/m3 | —— | —— |
TDI (Toluene-2, 4-diisocyanate) | 584-84-9 | 0.005 ppm | 0.02 ppm | —— | —— |
TEDP (Sulfotep) | 3689-24-5 | 0.2 mg/m3 | 0.6 mg/m3 | —— | X |
Tellurium and compounds (as Te) | 13494-80-9 | 0.1 mg/m3 | 0.3 mg/m3 | —— | —— |
Tellurium hexafluoride (as Te) | 7783-80-4 | 0.02 ppm | 0.06 ppm | —— | —— |
Temephos (Abate) | 3383-96-8 | —— | —— | —— | —— |
Total particulate | —— | 10 mg/m3 | 20 mg/m3 | —— | —— |
Respirable fraction | —— | 5 mg/m3 | 10 mg/m3 | —— | —— |
TEPP | 107-49-3 | 0.004 ppm | 0.012 ppm | —— | X |
Terphenyls | 26140-60-3 | —— | —— | 0.5 ppm | —— |
1, 1, 1, 2-Tetrachloro-2, 2-difluoroethane | 76-11-0 | 500 ppm | 625 ppm | —— | —— |
1, 1, 2, 2-Tetrachloro-1, 2-difluoroethane | 76-12-0 | 500 ppm | 625 ppm | —— | —— |
1, 1, 2, 2-Tetrachloroethane | 79-34-5 | 1 ppm | 3 ppm | —— | X |
Tetrachloroethylene (Perchloroethylene) | 127-18-4 | 25 ppm | 38 ppm | —— | —— |
Tetrachloromethane (Carbon tetrachloride) | 56-23-5 | 2 ppm | 4 ppm | —— | X |
Tetrachloronaphthalene | 1335-88-2 | 2 mg/m3 | 4 mg/m3 | —— | X |
Tetraethyl lead (as Pb) | 78-00-2 | 0.075 mg/m3 | 0.225 mg/m3 | —— | X |
Tetrahydrofuran | 109-99-9 | 200 ppm | 250 ppm | —— | —— |
Tetramethyl lead (as Pb) | 75-74-1 | 0.075 mg/m3 | 0.225 mg/m3 | —— | X |
Tetramethyl succinonitrile | 3333-52-6 | 0.5 ppm | 1.5 ppm | —— | X |
Tetranitromethane | 509-14-8 | 1 ppm | 3 ppm | —— | —— |
Tetrasodium pyrophosphate | 7722-88-5 | 5 mg/m3 | 10 mg/m3 | —— | —— |
Tetryl (2, 4, 6-trinitrophenyl- methylnitramine) | 479-45-8 | 1.5 mg/m3 | 3 mg/m3 | —— | X |
Thallium (soluble compounds) (as Tl) | 7440-28-0 | 0.1 mg/m3 | 0.3 mg/m3 | —— | X |
4, 4-Thiobis (6-tert-butyl-m-cresol) | 96-69-5 | —— | —— | —— | —— |
Total particulate | —— | 10 mg/m3 | 20 mg/m3 | —— | —— |
Respirable fraction | —— | 5 mg/m3 | 10 mg/m3 | —— | —— |
Thiodan (Endosulfan) | 115-29-7 | 0.1 mg/m3 | 0.3 mg/m3 | —— | X |
Thioglycolic acid | 68-11-1 | 1 ppm | 3 ppm | ——- | X |
Thionyl chloride | 7719-09-7 | —— | —— | 1 ppm | —— |
Thiram | 137-26-8 | 5 mg/m3 | 10 mg/m3 | —— | —— |
Tin (as Sn) | —— | —— | —— | —— | —— |
Inorganic compounds | 7440-31-5 | 2 mg/m3 | 4 mg/m3 | —— | —— |
Tin (as Sn) | —— | —— | —— | —— | —— |
Organic compounds | 7440-31-5 | 0.1 mg/m3 | 0.3 mg/m3 | —— | X |
Tin oxide (as Sn) | 21651-19-4 | 2 mg/m3 | 4 mg/m3 | —— | —— |
Titanium dioxide | 13463-67-7 | —— | —— | —— | —— |
Total particulate | —— | 10 mg/m3 | 20 mg/m3 | —— | —— |
TNT (2, 4, 6-Trinitrotoluene) | 118-96-7 | 0.5 mg/m3 | 1.5 mg/m3 | —— | X |
Toluene | 108-88-3 | 100 ppm | 150 ppm | —— | —— |
Toluene-2, 4-diisocyanate (TDI) | 584-84-9 | 0.005 ppm | 0.02 ppm | ——- | —— |
m-Toluidine | 108-44-1 | 2 ppm | 4 ppm | —— | X |
o-Toluidine | 95-53-4 | 2 ppm | 4 ppm | —— | X |
p-Toluidine | 106-49-0 | 2.0 ppm | 4 ppm | —— | X |
Toxaphene (Chlorinated camphene) | 8001-35-2 | 0.5 mg/m3 | 1 mg/m3 | —— | X |
Tremolite (asbestiform) (as asbestos) | —— | 0.1 f/cc | 1.0 f/cc (30 minutes) | —— | —— |
Tributyl phosphate | 126-73-8 | 0.2 ppm | 0.6 ppm | —— | —— |
Trichloroacetic acid | 76-03-9 | 1 ppm | 3 ppm | —— | —— |
1, 2, 4-Trichlorobenzene | 120-82-1 | —— | —— | 5 ppm | —— |
1, 1, 1-Trichloroethane (Methyl chloroform) | 71-55-6 | 350 ppm | 450 ppm | —— | —— |
1, 1, 2-Trichloroethane | 79-00-5 | 10 ppm | 20 ppm | —— | —— |
Trichloroethylene | 79-01-6 | 50 ppm | 200 ppm | —— | —— |
Trichlorofluoromethane (Fluorotrichloromethane) | 75-69-4 | —— | —— | 1,000 ppm | —— |
Trichloromethane (Chloroform) | 67-66-3 | 2 ppm | 4 ppm | —— | —— |
Trichloronaphthalene | 1321-65-9 | 5 mg/m3 | 10 mg/m3 | —— | X |
1, 2, 3-Trichloropropane | 96-18-4 | 10 ppm | 20 ppm | —— | X |
1, 1, 2-Trichloro-1, 2, 2-trifluoroethane | 76-13-1 | 1,000 ppm | 1,250 ppm | —— | —— |
Tricyclohexyltin hydroxide (Cyhexatin) | 13121-70-5 | 5 mg/m3 | 10 mg/m3 | —— | —— |
Triethylamine | 121-44-8 | 10 ppm | 15 ppm | —— | —— |
Trifluorobromomethane | 75-63-8 | 1,000 ppm | 1,250 ppm | —— | —— |
Trimellitic anhydride | 552-30-7 | 0.005 ppm | 0.015 ppm | —— | —— |
Trimethylamine | 75-50-3 | 10 ppm | 15 ppm | —— | —— |
Trimethyl benzene | 25551-13-7 | 25 ppm | 38 ppm | —— | —— |
Trimethyl phosphite | 121-45-9 | 2 ppm | 4 ppm | —— | —— |
2, 4, 6-Trinitrophenol (Picric acid) | 88-89-1 | 0.1 mg/m3 | 0.3 mg/m3 | —— | X |
2, 4, 6-Trinitrophenyl- methylnitramine (Tetryl) | 479-45-8 | 1.5 mg/m3 | 3 mg/m3 | ——- | X |
2, 4, 6-Trinitrotoluene (TNT) | 118-96-7 | 0.5 mg/m3 | 1.5 mg/m3 | —— | X |
Triorthocresyl phosphate | 78-30-8 | 0.1 mg/m3 | 0.3 mg/m3 | —— | X |
Triphenyl amine | 603-34-9 | 5 mg/m3 | 10 mg/m3 | —— | —— |
Triphenyl phosphate | 115-86-6 | 3 mg/m3 | 6 mg/m3 | —— | —— |
Tungsten (as W) | 7440-33-7 | —— | —— | —— | —— |
Soluble compounds | —— | 1 mg/m3 | 3 mg/m3 | —— | —— |
Insoluble compounds | —— | 5 mg/m3 | 10 mg/m3 | —— | —— |
Turpentine | 8006-64-2 | 100 ppm | 150 ppm | —— | —— |
Uranium (as U) | 7440-61-1 | —— | —— | —— | —— |
Soluble compounds | —— | 0.05 mg/m3 | 0.15 mg/m3 | —— | —— |
Insoluble compounds | —— | 0.2 mg/m3 | 0.6 mg/m3 | —— | —— |
n-Valeraldehyde | 110-62-3 | 50 ppm | 75 ppm | —— | —— |
Vanadium (as V2O5) | —— | —— | —— | —— | —— |
Respirable fraction | 1314-62-1 | 0.05 mg/m3 | 0.15 mg/m3 | —— | —— |
Vegetable oil mist | —— | —— | —— | —— | —— |
Total particulate | —— | 10 mg/m3 | 20 mg/m3 | —— | —— |
Respirable fraction | —— | 5 mg/m3 | 10 mg/m3 | —— | —— |
Vinyl acetate | 108-05-1 | 10 ppm | 20 ppm | —— | —— |
Vinyl benzene (Styrene) | 100-42-5 | 50 ppm | 100 ppm | —— | —— |
Vinyl bromide | 593-60-2 | 5 ppm | 10 ppm | —— | —— |
Vinyl chloride (Chloroethylene) | 75-01-4 | 1 ppm | 5 ppm | —— | —— |
Vinyl cyanide (Acrylonitrile) | 107-13-1 | 2 ppm | 10 ppm | —— | —— |
Vinyl cyclohexene dioxide | 106-87-6 | 10 ppm | 20 ppm | —— | X |
Vinyl toluene | 25013-15-4 | 50 ppm | 75 ppm | —— | —— |
Vinylidene chloride (1, 1-Dichloroethylene) | 75-35-4 | 1 ppm | 3 ppm | —— | —— |
VM & P Naphtha | 8032-32-4 | 300 ppm | 400 ppm | —— | —— |
Warfarin | 81-81-2 | 0.1 mg/m3 | 0.3 mg/m3 | —— | —— |
Welding fumes (total particulate) | —— | 5 mg/m3 | 10 mg/m3 | —— | —— |
Wood dust | —— | —— | —— | —— | —— |
Nonallergenic; (All woods except allergenics) | —— | 5 mg/m3 | 10 mg/m3 | —— | —— |
Allergenics (e.g. cedar, mahogany and teak) | —— | 2.5 mg/m3 | 5 mg/m3 | —— | —— |
Xylenes (ortho, meta, and para isomers) (Dimethylbenzene) | 1330-20-7 | 100 ppm | 150 ppm | —— | —— |
m-Xylene alpha, alpha-diamine | 1477-55-0 | —— | —— | 0.1 mg/m3 | X |
Xylidine (Dimethylaminobenzene) | 1300-73-8 | 2 ppm | 4 ppm | —— | X |
Yttrium | 7440-65-5 | 1 mg/m3 | 3 mg/m3 | —— | —— |
Zinc chloride fume | 7646-85-7 | 1 mg/m3 | 2 mg/m3 | —— | —— |
Zinc chromate (as Cr) | Varies with compound | 0.005 mg/m3 | —— | 0.1 mg/m3 | —— |
Zinc oxide | 1314-13-2 | —— | —— | —— | —— |
Total particulate | —— | 10 mg/m3 | 20 mg/m3 | —— | —— |
Respirable fraction | —— | 5 mg/m3 | 10 mg/m | —— | —— |
Zinc oxide fume | 1314-13-2 | 5 mg/g3 | 10 mg/m3 | —— | —— |
Zinc stearate | 557-05-1 | —— | —— | —— | —— |
Total particulate | —— | 10 mg/m3 | 20 mg/m3 | —— | —— |
Respirable fraction | —— | 5 mg/m3 | 10 mg/m3 | —— | —— |
Zirconium compounds (as Zr) | 7440-67-2 | 5 mg/m3 | 10 mg/m3 | —— | —— |