REGULATIONS|Federal Regulatory Program Lists

List: Hazardous Air Pollutants (Clean Air Act)
Description
The U.S. Congress amended the federal Clean Air Act in 1990 to address a large number of air pollutants that are known to cause or may reasonably be anticipated to cause adverse effects to human health or adverse environmental effects. 188 specific pollutants and chemical groups were initially identified as hazardous air pollutants (HAPs), and the list has been modified over time.

Section 112 of the Clean Air Act governs the federal control program for hazardous air pollutants. "National emissions standards for hazardous air pollutants" (NESHAPs) are issued to limit the release of specified HAPs from specific industrial sectors. These standards are "technology-based," meaning that they represent the best available control technology an industrial sector could afford. The level of emissions controls required by NESHAPs are not based on health risk considerations: allowable releases and resulting concentrations have not been determined to be safe for the general public. The Clean Air Act does not establish air quality standards for HAPs that define legally acceptable concentrations of these pollutants in ambient air.

Reference
EPA, Office of Air Quality, Planning & Standards. Section 112 Hazardous Air Pollutants List.
http://www.epa.gov/ttn/atw/188polls.html

EPA, Office of Air Quality, Planning & Standards. Modifications to the 112(b)1 Hazardous Air Pollutants.
http://www.epa.gov/ttn/atw/atwsmod.html

 
List of Chemicals
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Chemical Name CAS Registry Number (or EDF Substance ID)
ACETALDEHYDE75-07-0
ACETAMIDE60-35-5
ACETONITRILE75-05-8
ACETOPHENONE98-86-2
2-ACETYLAMINOFLUORENE53-96-3
ACROLEIN107-02-8
ACRYLAMIDE79-06-1
ACRYLIC ACID79-10-7
ACRYLONITRILE107-13-1
ALLYL CHLORIDE107-05-1
4-AMINOBIPHENYL92-67-1
ANILINE62-53-3
ANTIMONY7440-36-0
ANTIMONY COMPOUNDSADQ500
ARSENIC7440-38-2
ASBESTOS (FRIABLE)1332-21-4
BENZENE71-43-2
BENZIDINE92-87-5
BENZOIC TRICHLORIDE98-07-7
BENZYL CHLORIDE100-44-7
BERYLLIUM7440-41-7
BERYLLIUM COMPOUNDSBFQ500
BETA-PROPIOLACTONE57-57-8
BIPHENYL92-52-4
(1,1'-BIPHENYL)-4,4'-DIAMINE, 3,3'-DIMETHYL-119-93-7
BIS(2-CHLOROETHYL) ETHER111-44-4
BIS(2-ETHYLHEXYL)PHTHALATE117-81-7
BIS(CHLOROMETHYL) ETHER542-88-1
1,3-BUTADIENE106-99-0
1,2-BUTYLENE OXIDE106-88-7
CADMIUM7440-43-9
CADMIUM COMPOUNDSCAE750
CALCIUM CYANAMIDE156-62-7
CAMPHECHLOR8001-35-2
CAPTAN133-06-2
CARBARYL63-25-2
CARBON DISULFIDE75-15-0
CARBON TETRACHLORIDE56-23-5
CARBONYL SULFIDE463-58-1
CATECHOL120-80-9
2-CHLOR-1,3-BUTADIENE126-99-8
CHLORAMBEN133-90-4
CHLORDANE57-74-9
CHLORINE7782-50-5
CHLOROACETIC ACID79-11-8
2-CHLOROACETOPHENONE532-27-4
CHLOROBENZENE108-90-7
CHLOROBENZILATE510-15-6
CHLOROETHANE75-00-3
CHLOROFORM67-66-3
CHLOROMETHANE74-87-3
CHLOROMETHYL METHYL ETHER107-30-2
CHROMIUM7440-47-3
CHROMIUM COMPOUNDSCMJ500
COBALT7440-48-4
COBALT COMPOUNDSCNB850
COKE OVEN EMISSIONS1066
CRESOL (MIXED ISOMERS)1319-77-3
CUMENE98-82-8
CYANIDE COMPOUNDS1073
2,4-D94-75-7
DDE72-55-9
2,4-DIAMINOTOLUENE95-80-7
DIAZOMETHANE334-88-3
DIBENZOFURAN132-64-9
1,2-DIBROMO-3-CHLOROPROPANE (DBCP)96-12-8
1,2-DIBROMOETHANE106-93-4
DIBUTYL PHTHALATE84-74-2
1,4-DICHLOROBENZENE106-46-7
3,3'-DICHLOROBENZIDINE91-94-1
1,1-DICHLOROETHANE75-34-3
1,2-DICHLOROETHANE107-06-2
1,1-DICHLOROETHYLENE75-35-4
DICHLOROMETHANE75-09-2
1,2-DICHLOROPROPANE78-87-5
1,3-DICHLOROPROPENE (MIXED ISOMERS)542-75-6
DICHLORVOS62-73-7
DIETHANOLAMINE111-42-2
DIETHYL SULFATE64-67-5
3,3'-DIMETHOXYBENZIDINE119-90-4
1,1-DIMETHYL HYDRAZINE57-14-7
DIMETHYL PHTHALATE131-11-3
DIMETHYL SULFATE77-78-1
4-DIMETHYLAMINOAZOBENZENE60-11-7
DIMETHYLCARBAMOYL CHLORIDE79-44-7
4,6-DINITRO-O-CRESOL534-52-1
2,4-DINITROPHENOL51-28-5
2,4-DINITROTOLUENE121-14-2
1,4-DIOXANE123-91-1
1,2-DIPHENYLHYDRAZINE122-66-7
EPICHLOROHYDRIN106-89-8
ETHYL ACRYLATE140-88-5
ETHYLBENZENE100-41-4
ETHYLENE GLYCOL107-21-1
ETHYLENE GLYCOL MONOETHYL ETHER110-80-5
ETHYLENE GLYCOL MONOMETHYL ETHER109-86-4
ETHYLENE OXIDE75-21-8
ETHYLENE THIOUREA96-45-7
ETHYLENEIMINE151-56-4
FORMALDEHYDE50-00-0
GAMMA-LINDANE58-89-9
GLYCOL ETHERSEDF-109
HEPTACHLOR76-44-8
HEXACHLORO-1,3-BUTADIENE87-68-3
HEXACHLOROBENZENE118-74-1
HEXACHLOROCYCLOPENTADIENE77-47-4
HEXACHLOROETHANE67-72-1
HEXAMETHYLENE-1,6-DIISOCYANATE822-06-0
HEXAMETHYLPHOSPHORAMIDE680-31-9
HYDRAZINE302-01-2
HYDROCHLORIC ACID7647-01-0
HYDROFLUORIC ACID7664-39-3
HYDROGEN CYANIDE74-90-8
HYDROQUINONE123-31-9
INORGANIC ARSENIC COMPOUNDSEDF-222
ISOPHORONE78-59-1
LEAD7439-92-1
LEAD COMPOUNDSLCT000
M-CRESOL108-39-4
M-XYLENE108-38-3
MALEIC ANHYDRIDE108-31-6
MANGANESE7439-96-5
MANGANESE COMPOUNDSMAR500
MERCURY7439-97-6
MERCURY COMPOUNDSEDF-033
METHANAMINE, N-METHYL-N-NITROSO62-75-9
METHANOL67-56-1
METHOXYCHLOR72-43-5
METHYL BROMIDE74-83-9
METHYL ETHYL KETONE78-93-3
METHYL HYDRAZINE60-34-4
METHYL IODIDE74-88-4
METHYL ISOBUTYL KETONE108-10-1
METHYL ISOCYANATE624-83-9
METHYL METHACRYLATE80-62-6
METHYL TERT-BUTYL ETHER1634-04-4
4,4'-METHYLENEBIS(2-CHLOROANILINE)101-14-4
1,1'-METHYLENEBIS(4-ISOCYANATOBENZENE)101-68-8
4,4'-METHYLENEDIANILINE101-77-9
MINERAL FIBERS1136
N,N-DIMETHYLANILINE121-69-7
N,N-DIMETHYLFORMAMIDE68-12-2
N-HEXANE110-54-3
N-NITROSO-N-METHYLUREA684-93-5
N-NITROSOMORPHOLINE59-89-2
NAPHTHALENE91-20-3
NICKEL7440-02-0
NICKEL COMPOUNDSNDB000
NITROBENZENE98-95-3
4-NITROBIPHENYL92-93-3
4-NITROPHENOL100-02-7
2-NITROPROPANE79-46-9
O-ANISIDINE90-04-0
O-CRESOL95-48-7
O-TOLUIDINE95-53-4
O-XYLENE95-47-6
P-CRESOL106-44-5
P-PHENYLENEDIAMINE106-50-3
P-XYLENE106-42-3
PARATHION56-38-2
PENTACHLOROPHENOL87-86-5
PHENOL108-95-2
PHOSGENE75-44-5
PHOSPHINE7803-51-2
PHOSPHORUS COMPOUNDSPHQ000
PHTHALIC ANHYDRIDE85-44-9
POLYCHLORINATED BIPHENYLS1336-36-3
POLYCYCLIC ORGANIC MATTER (POM)EDF-047
PROPANE SULTONE1120-71-4
PROPIONALDEHYDE123-38-6
PROPOXUR114-26-1
PROPYLENE OXIDE75-56-9
PROPYLENEIMINE75-55-8
QUINOLINE91-22-5
QUINONE106-51-4
QUINTOZENE82-68-8
RADIONUCLIDES1165
SELENIUM7782-49-2
SELENIUM COMPOUNDSSBP500
STYRENE100-42-5
STYRENE OXIDE96-09-3
2,3,7,8-TETRACHLORODIBENZO-P-DIOXIN (TCDD)1746-01-6
1,1,2,2-TETRACHLOROETHANE79-34-5
TETRACHLOROETHYLENE127-18-4
TITANIUM TETRACHLORIDE7550-45-0
TOLUENE108-88-3
TOLUENE-2,4-DIISOCYANATE584-84-9
TRANS-1,3-DICHLOROPROPENE10061-02-6
TRIBROMOMETHANE75-25-2
1,2,4-TRICHLOROBENZENE120-82-1
1,1,1-TRICHLOROETHANE71-55-6
1,1,2-TRICHLOROETHANE79-00-5
TRICHLOROETHYLENE79-01-6
2,4,6-TRICHLOROPHENOL88-06-2
2,4,5-TRICHLOROPHENOL95-95-4
TRIETHYLAMINE121-44-8
TRIFLURALIN1582-09-8
2,2,4-TRIMETHYLPENTANE540-84-1
URETHANE51-79-6
VINYL ACETATE108-05-4
VINYL BROMIDE593-60-2
VINYL CHLORIDE75-01-4
XYLENE (MIXED ISOMERS)1330-20-7

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