Pollutants
The USEPA regulates the following hazardous air pollutants via the MACT standards:
| CAS Number | Chemical Name | Notes |
|---|---|---|
| 75-07-0 | Acetaldehyde | |
| 60-35-5 | Acetamide | |
| 75-05-8 | Acetonitrile | |
| 98-86-2 | Acetophenone (Methyl Phenyl Ketone) | |
| 53-96-3 | 2-Acetylaminofluorene | |
| 107-02-8 | Acrolein | |
| 79-06-1 | Acrylamide | |
| 79-10-7 | Acrylic acid | |
| 107-13-1 | Acrylonitrile | |
| 107-05-1 | Allyl chloride (3-Chloropropene) | |
| 92-67-1 | 4-Aminobiphenyl | |
| 62-53-3 | Aniline | |
| 90-04-0 | o-Anisidine | |
| 1332-21-4 | Asbestos | |
| 71-43-2 | Benzene | including benzene from gasoline |
| 92-87-5 | Benzidine | |
| 98-07-7 | Benzotrichloride | |
| 100-44-7 | Benzyl chloride | |
| 92-52-4 | Biphenyl | |
| 117-81-7 | Bis(2-ethylhexyl)phthalate (DEHP) | |
| 542-88-1 | Bis(chloromethyl)ether | |
| 75-25-2 | Bromoform (Tribromomethane) | |
| 106-99-0 | 1,3-Butadiene | |
| 156-62-7 | Calcium cyanamide | |
| 105-60-2 | Caprolactam | delisted on June 18, 1996 |
| 133-06-2 | Captan | |
| 63-25-2 | Carbaryl | |
| 75-15-0 | Carbon disulfide | |
| 56-23-5 | Carbon tetrachloride (Tetrachloromethane) | |
| 463-58-1 | Carbonyl sulfide | |
| 120-80-9 | Catechol | |
| 133-90-4 | Chloramben | |
| 57-74-9 | Chlordane | |
| 7782-50-5 | Chlorine | |
| 79-11-8 | Chloroacetic acid | |
| 532-27-4 | 2-Chloroacetophenone | |
| 108-90-7 | Chlorobenzene | |
| 510-15-6 | Chlorobenzilate | |
| 67-66-3 | Chloroform (Trichloromethane) | |
| 107-30-2 | Chloromethyl methyl ether | |
| 126-99-8 | Chloroprene | |
| 1319-77-3 | Cresols/Cresylic acid (isomers and mixture) | |
| 95-48-7 | o-Cresol | |
| 108-39-4 | m-Cresol | |
| 106-44-5 | p-Cresol | |
| 98-82-8 | Cumene | |
| 94-75-7 | 2,4-D, salts and esters | |
| 3547-04-4 | Dichlorodiphenyldichloroethylene (DDE) | |
| 334-88-3 | Diazomethane | |
| 132-64-9 | Dibenzofurans | |
| 96-12-8 | 1,2-Dibromo-3-chloropropane (DBCP) | |
| 84-74-2 | Dibutylphthalate | |
| 106-46-7 | 1,4-Dichlorobenzene (p-Dichlorobenzene) | |
| 91-94-1 | 3,3'-Dichlorobenzidine | |
| 111-44-4 | Dichloroethyl ether (Bis(2-chloroethyl)ether) | |
| 542-75-6 | 1,3-Dichloropropene | |
| 62-73-7 | Dichlorvos | |
| 111-42-2 | Diethanolamine | |
| 64-67-5 | Diethyl sulfate | |
| 119-90-4 | 3,3'-Dimethoxybenzidine | |
| 60-11-7 | Dimethyl aminoazobenzene | |
| 119-93-7 | 3,3'-Dimethyl benzidine | |
| 79-44-7 | Dimethyl carbamoyl chloride | |
| 68-12-2 | Dimethyl formamide | |
| 57-14-7 | 1,1-Dimethyl hydrazine | |
| 131-11-3 | Dimethyl phthalate | |
| 77-78-1 | Dimethyl sulfate | |
| 121-69-7 | N,N-Dimethylaniline | Clean Air Act erroneously lists N,N-Diethylaniline |
| 534-52-1 | 4,6-Dinitro-o-cresol, and salts | |
| 51-28-5 | 2,4-Dinitrophenol | |
| 121-14-2 | 2,4-Dinitrotoluene | |
| 123-91-1 | 1,4-Dioxane (1,4-Diethyleneoxide) | |
| 122-66-7 | 1,2-Diphenylhydrazine | |
| 106-89-8 | Epichlorohydrin (l-Chloro-2,3-epoxypropane) | |
| 106-88-7 | 1,2-Epoxybutane | |
| 140-88-5 | Ethyl acrylate | |
| 100-41-4 | Ethyl benzene | |
| 51-79-6 | Ethyl carbamate (Urethane) | |
| 75-00-3 | Ethyl chloride (Chloroethane) | |
| 106-93-4 | Ethylene dibromide (1,2-Dibromoethane) | |
| 107-06-2 | Ethylene dichloride (1,2-Dichloroethane) | |
| 107-21-1 | Ethylene glycol | |
| 151-56-4 | Ethylene imine (Aziridine) | |
| 75-21-8 | Ethylene oxide | |
| 96-45-7 | Ethylene thiourea | |
| 75-34-3 | Ethylidene dichloride (1,1-Dichloroethane) | |
| 50-00-0 | Formaldehyde | |
| 76-44-8 | Heptachlor | |
| 118-74-1 | Hexachlorobenzene | |
| 87-68-3 | Hexachlorobutadiene | |
| 77-47-4 | Hexachlorocyclopentadiene | |
| 67-72-1 | Hexachloroethane | |
| 822-06-0 | Hexamethylene-1,6-diisocyanate | |
| 680-31-9 | Hexamethylphosphoramide | |
| 110-54-3 | Hexane | |
| 302-01-2 | Hydrazine | |
| 7647-01-0 | Hydrochloric acid | |
| 7664-39-3 | Hydrogen fluoride (Hydrofluoric acid) | |
| 7783-06-4 | Hydrogen sulfide | delisted on December 4, 1991 |
| 123-31-9 | Hydroquinone | |
| 78-59-1 | Isophorone | |
| 58-89-9 | Lindane (all isomers) | |
| 108-31-6 | Maleic anhydride | |
| 67-56-1 | Methanol | |
| 72-43-5 | Methoxychlor | |
| 74-83-9 | Methyl bromide (Bromomethane) | |
| 74-87-3 | Methyl chloride (Chloromethane) | |
| 71-55-6 | Methyl chloroform (1,1,1-Trichloroethane) | |
| 78-93-3 | Methyl ethyl ketone (2-Butanone or MEK) | delisted on December 19, 2005 |
| 60-34-4 | Methyl hydrazine | |
| 74-88-4 | Methyl iodide (Iodomethane) | |
| 108-10-1 | Methyl isobutyl ketone (Hexone or MIBK) | currently under review for delisting |
| 624-83-9 | Methyl isocyanate | |
| 80-62-6 | Methyl methacrylate | |
| 1634-04-4 | Methyl tert-butyl ether | |
| 101-14-4 | 4,4'-Methylene bis(2-chloroaniline) | |
| 75-09-2 | Methylene chloride (Dichloromethane) | |
| 101-68-8 | Methylene diphenyl diisocyanate (MDI) | currently under review for delisting |
| 101-77-9 | 4,4'-Methylenedianiline | |
| 91-20-3 | Naphthalene | |
| 98-95-3 | Nitrobenzene | |
| 92-93-3 | 4-Nitrobiphenyl | |
| 100-02-7 | 4-Nitrophenol | |
| 79-46-9 | 2-Nitropropane | |
| 684-93-5 | N-Nitroso-N-methylurea | |
| 62-75-9 | N-Nitrosodimethylamine | |
| 59-89-2 | N-Nitrosomorpholine | |
| 56-38-2 | Parathion | |
| 82-68-8 | Pentachloronitrobenzene (Quintobenzene) | |
| 87-86-5 | Pentachlorophenol | |
| 108-95-2 | Phenol | |
| 106-50-3 | p-Phenylenediamine | |
| 75-44-5 | Phosgene | |
| 7803-51-2 | Phosphine | |
| 7723-14-0 | Phosphorus | |
| 85-44-9 | Phthalic anhydride | |
| 1336-36-3 | Polychlorinated biphenyls (Aroclors) | |
| 1120-71-4 | 1,3-Propane sultone | |
| 57-57-8 | beta-Propiolactone | |
| 123-38-6 | Propionaldehyde | |
| 114-26-1 | Propoxur (Baygon) | |
| 78-87-5 | Propylene dichloride (1,2-Dichloropropane) | |
| 75-56-9 | Propylene oxide | |
| 75-55-8 | 1,2-Propylenimine (2-Methyl aziridine) | |
| 91-22-5 | Quinoline | |
| 106-51-4 | Quinone | |
| 100-42-5 | Styrene | |
| 96-09-3 | Styrene oxide | |
| 1746-01-6 | 2,3,7,8-Tetrachlorodibenzo-p-dioxin | |
| 79-34-5 | 1,1,2,2-Tetrachloroethane | |
| 127-18-4 | Tetrachloroethylene (Perchloroethylene) | |
| 7550-45-0 | Titanium tetrachloride | |
| 108-88-3 | Toluene | |
| 95-80-7 | 2,4-Toluene diamine | |
| 584-84-9 | 2,4-Toluene diisocyanate | |
| 95-53-4 | o-Toluidine | |
| 8001-35-2 | Toxaphene (chlorinated camphene) | |
| 120-82-1 | 1,2,4-Trichlorobenzene | |
| 79-00-5 | 1,1,2-Trichloroethane | |
| 79-01-6 | Trichloroethylene | |
| 95-95-4 | 2,4,5-Trichlorophenol | |
| 88-06-2 | 2,4,6-Trichlorophenol | |
| 121-44-8 | Triethylamine | |
| 1582-09-8 | Trifluralin | |
| 540-84-1 | 2,2,4-Trimethylpentane | |
| 108-05-4 | Vinyl acetate | |
| 593-60-2 | Vinyl bromide (Bromoethene) | |
| 75-01-4 | Vinyl chloride (Chloroethene) | |
| 75-35-4 | Vinylidene chloride (1,1-Dichloroethylene) | |
| 1330-20-7 | Xylenes (isomers and mixture) | |
| 95-47-6 | o-Xylenes | |
| 108-38-3 | m-Xylenes | |
| 106-42-3 | p-Xylenes | |
| n/a | Antimony Compounds | |
| n/a | Arsenic Compounds | inorganic including arsine |
| n/a | Beryllium Compounds | |
| n/a | Cadmium Compounds | |
| n/a | Chromium Compounds | |
| n/a | Cobalt Compounds | |
| n/a | Coke Oven Emissions | |
| n/a | Cyanide Compounds1 | |
| n/a | Glycol ethers2 | |
| n/a | Lead Compounds | |
| n/a | Manganese Compounds | |
| n/a | Mercury Compounds | |
| n/a | Fine mineral fibers3 | |
| n/a | Nickel Compounds | |
| n/a | Polycylic Organic Matter4 | |
| n/a | Radionuclides5 | including radon |
| n/a | Selenium Compounds |
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.
- ^1 X'CN where X = H' or any other group where a formal dissociation may occur. For example KCN or Ca(CN)2
- ^2 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 C7 (chain of 7 carbon atoms) or less; or phenyl or alkyl substituted phenyl
- R' = H or alkyl C7 or less; or OR' consisting of carboxylic acid ester, sulfate, phosphate, nitrate, or sulfonate. Polymers are excluded from the glycol category, as well as surfactant alcohol ethoxylates (where R is an alkyl C8 or greater) and their derivatives, and ethylene glycol monobutyl ether (CAS 111-76-2).
- ^3 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.
- ^4 Includes organic compounds with more than one benzene ring, and which have a boiling point greater than or equal to 100 °C.
- ^5 A type of atom which spontaneously undergoes radioactive decay.
Sources: USEPA's original list & Modifications
Read more about this topic: National Emissions Standards For Hazardous Air Pollutants
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