I. |
Substances identified as Toxic Air Contaminants by the Air Resources Board, pursuant
to the provisions of AB 1807**
and AB 2728** (includes all
Hazardous Air Pollutants listed in the Federal Clean Air Act Amendments of 1990). |
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Acetaldehyde |
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Hydrazine |
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Acetamide |
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Hydrochloric Acid |
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Acetonitrile |
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Hydrogen Fluoride (Hydrofluoric Acid) |
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Acetophenone |
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Hydroquinone |
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2-Acetylaminofluorene |
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*Inorganic Arsenic |
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Acrolein |
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Isophorone |
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Acrylamide |
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Lindane (All Isomers) |
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Acrylic Acid |
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Maleic Anhydride |
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Acrylonitrile |
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Methanol |
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Allyl Chloride |
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Methoxychlor |
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4-Aminobiphenyl |
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Methyl Bromide (Bromomethane) |
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Aniline |
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Methyl Chloride (Chloromethane) |
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O-Anisidine |
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Methyl Chloroform (1,1,1-Trichloroethane) |
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*Asbestos |
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Methyl Ethyl Ketone (2-Butanone) |
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*Benzene (Including Benzene from Gasoline) |
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Methyl Hydrazine |
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Benzidine |
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Methyl Iodide (Iodomethane) |
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Benzotrichloride |
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Methyl Isobutyl Ketone (Hexone) |
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Benzyl Chloride |
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Methyl Isocyanate |
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Biphenyl |
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Methyl Methacrylate |
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Bis(2-Ethylhexyl)Phthalate (DEHP) |
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Methyl Tert Butyl Ether |
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Bis(Chloromethyl)Ether |
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4,4-Methylene Bis(2-Chloroaniline) |
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Bromoform |
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*Methylene Chloride (Dichloromethane) |
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*1,3-Butadiene |
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Methylene Diphenyl Diisocyanate (MDI) |
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*Cadmium (Metallic Cadmium and Cadmium Compounds) |
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4,4-Methylenedianiline |
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Calcium Cyanamide |
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Naphthalene |
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Caprolactam |
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*Nickel and Nickel Compounds |
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Captan |
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Nitrobenzene |
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Carbaryl |
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4-Nitrobiphenyl |
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Carbon Disulfide |
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4-Nitrophenol |
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*Carbon Tetrachloride |
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2-Nitropropane |
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Carbonyl sulfide |
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N-Nitroso-N-Methylurea |
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Catechol |
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N-Nitrosodimethylamine |
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Chloramben |
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N-Nitrosomorpholine |
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Chlordane |
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Parathion |
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Chlorine |
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Pentachloronitrobenzene (Quintobenzene) |
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*Chlorinated Dioxns and Dibenzofurans (15 Species) |
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Pentachlorophenol |
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Chloroacetic Acid |
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Phenol |
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2-Chloroacetophenone |
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P-Phenylenediamine |
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Chlorobenzene |
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Phosgene |
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Chlorobenzilate |
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Phosphine |
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*Chloroform |
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Phosphorus |
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Chloromethyl Methyl Ether |
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Phthalic Anhydride |
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Chloroprene |
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Polychlorinated Biphenyls (Aroclors) |
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*Chromium VI |
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1,3-Propane Sultone |
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Cresols / Cresylic Acid (Isomers and Mixtures) |
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Beta-Propiolactone |
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O-Cresol |
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Propionaldehyde |
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M-Cresol |
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Propoxur (Baygon) |
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P-Cresol |
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Propylene Dichloride (1,2-Dichloropropane) |
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Cumene |
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Propylene Oxide |
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2,4-D, Salts and Esters |
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1,2-Propylenimine (2-Methyl Aziridine) |
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DDE |
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Quinoline |
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Diazomethane |
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Quinone |
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Dibenzofurans |
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Styrene |
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1,2-Dibromo-3-Chloropropane |
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Styrene Oxide |
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Dibutylphthalate |
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2,3,7,8-Tetrachlorodibenzo-P-Dioxin |
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1,4-Dichlorobenzene(p) |
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1,1,2,2-Tetrachloroethane |
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3,3-Dichlorobenzidene |
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*Tetrachloroethylene (Perchloroethylene) |
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Dichloroethyl Ether [Bis(2-Chloroethyl)Ether] |
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Titanium Tetrachloride |
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1,3-Dichloropropene |
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Toluene |
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Dichlorvos |
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2,4-Toluene Diamine |
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Diethanolamine |
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2,4-Toluene Diisocyanate |
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N,N-Dimethylaniline |
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O-Toluidine |
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Diethyl Sulfate |
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Toxaphene (Chlorinated Camphene) |
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3,3-Dimethoxybenzidene |
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1,2,4-Trichlorobenzene |
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Dimethyl Aminoazobenzene |
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1,1,2-Trichloroethane |
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3,3-Dimethyl Benzidene |
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*Trichloroethylene |
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Dimethyl Carbamoyl Chloride |
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2,4,5-Trichlorophenol |
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Dimethyl Formamide |
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2,4,5-Trichlorophenol |
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1,1-Dimethyl Hydrazine |
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2,4,6-Trichlorophenol |
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Dimethyl Phthalate |
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Triethylamine |
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Dimethyl Sulfate |
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Trifluralin |
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4,6-Dinitro-O-Cresol, and Salts |
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2,2,4-Trimethylpentane |
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2,4-Dinitrophenol |
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Vinyl Acetate |
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2,4-Dinitrotoluene |
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Vinyl Bromide |
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1,4-Dioxane (1,4-Diethyleneoxide) |
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*Vinyl Chloride |
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1,2-Diphenylhydrazine |
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Vinylidene Chloride (1,1-Cichloroethylene) |
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Epichlorohydrin (1-Chloro-2,3-Epoxypropane) |
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Xylenes (Isomers and Mixture) |
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1,2-Epoxybutane |
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M-Xylenes |
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Ethyl Acrylate |
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O-Xylenes |
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Ethyl Benzene |
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P-Xylenes |
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Ethyl Carbamate (Urethane) |
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o Antimony Compounds |
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Ethyl Chloride (Chloroethane) |
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o Arsenic Compounds (Inorganic Including Arsine) |
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*Ethylene Dibromide (Dibromoethane) |
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o Beryllium Compounds |
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*Ethylene Dichloride (1,2-Dichloroethane) |
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o Cadmium Compounds |
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Ethylene Glycol |
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o Chromium Compounds |
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Ethylene Imine (Aziridine) |
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o Cobalt Compounds |
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*Ethylene Oxide |
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o Coke Oven Emissions |
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Ethylene Thiourea |
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o Cyanide Compounds1 |
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Ethylidene Dichloride (1,1-Dichloroethane) |
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o Glycol Ethers2 |
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*Formaldehyde |
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o Lead Compounds |
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Heptachlor |
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o Manganese Compounds |
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Hexachlorobenzene |
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o Mercury Compounds |
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Hexachlorobutadiene |
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o Fine Mineral Fibers3 |
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Hexachlorocyclopentadiene |
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o Nickel Compounds |
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Hexachloroethane |
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o Polycyclic Organic Matter4 |
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Hexamethylene-1,6-Diisocyanate |
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o Radionuclides (Including Radon)5 |
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Hexamethylphosphoramide |
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o Selenium Compounds |
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Hexane |
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*
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Substances which have already been identified by the Board as TACs and which
have potency numbers developed by the OEHHA and SRP. |
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**
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AB 1807, Statutes 1983, chapter 1047, Health & Safety Code section 39650
et. seq.
AB 2728, Statutes 1992, chapter 1161, Healthe & Safety Code secitons 39655 et. seq. |
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II. |
Substances currently under review or nominated for review for identification as Toxic Air Contaminants. |
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A. |
Substances already in the review process.
Diesel Exhaust
Inorganic Lead
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B. |
Substances nominated for review.
Dialkylnitrosamines
Environmental Tobacco Smoke
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III. |
Substances which are being evaluated for entry into Category II (IIA or IIB).
Factors considered in this evaluation include carcinogenic and noncarcinogenic health effects, emissions and
exposure in California. |
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Aluminum |
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Glutaraldehyde |
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Ammonia |
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Hexachlorocyclohexanes |
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Ammonium Nitrate |
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Hydrogen Sulfide |
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Ammonium Sulfate |
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Isopropyl Alcohol |
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Barium Compounds |
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4,4'-Isopropylidenediphenol |
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Benzoyl Chloride |
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Molybdenum Trioxide |
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Bis(2-Ethylhexyl)Adipate |
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N-Butyl Alcohol |
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Bromine Compounds (Inorganic) |
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Nitric Acid |
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Butyl Acrylate |
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Nitrilotriacetic Acid |
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Butyl Benzyl Phthalate |
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Peracetic Acid |
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Carbon Black Extracts |
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2-Phenylphenol |
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Chlorinated Fluorocarbons |
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Phosphoric Acid |
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Chlorine Dioxide |
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Propene |
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Chlorophenols |
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Sec-Butyl Alcohol |
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Copper Compounds |
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Silver Compounds |
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Creosotes |
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Sodium Hydroxide |
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Crystalline Silica |
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Sulfuric Acid |
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Cumene Hydroperoxide |
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Terephthalic Acid |
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Cyclohexane |
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Tert-Butyl Alcohol |
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Decabromodiphenyl oxide |
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Thiourea |
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Diaminotoluene (Mixed Isomers) |
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1,2,4-Trimethylbenzene |
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Dicofol |
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Zinc Compounds |
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Gasoline Vapors |
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Note: |
For all listings above which contain the word "compounds" and
for glycol ethers, the following applies: Unless otherwise specified, these listings are defined as including
any unique chemical substance that contains the named chemical (i.e, antimony, arsenic, etc.) as
part of that chemical's infrastructure. |
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1
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X'CN where X = H' or any other group where a formal dissociation
may occur. For example: KCN or Ca(CN)2 |
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2
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Includes mono- and di-ethers of ethylene glycol, diethylene glycol, and
triethylene glycol (R(OCH2CH2)n - OR' where:
n = 1,2 or 3
R = Alkyl or Aryl Groups
R = R,H, or groups which, when removed, yield glycol ethers with the
structure;
R(OCH2CH)n-OH. Polymers are excluded from the glycol category.
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3
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Includes mineral fiber emissions from facilities manufacturing or processing
glass, rock, or slag fibers (or other mineral derived fibers) of average diameter 1 micrometer
or less. |
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4
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Includes organic compounds with more than one benzene ring, and which have
a boiling point greater than or equal to 100oC. |
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5
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A type of atom which spontaneously undergoes radioactive decay. |
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