Regulations last checked for updates: May 18, 2024

Title 40 - Protection of Environment last revised: May 16, 2024
All TitlesTitle 40Chapter IPart 63Subpart HHHHHAppendix - Table 11 to Subpart HHHHH of Part 63— List of Hazardous Air Pollutants That Must Be Counted Toward Total Organic HAP Content If Present at 0.1 Percent or More by Mass
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Appendix - Table 11 to Subpart HHHHH of Part 63— List of Hazardous Air Pollutants That Must Be Counted Toward Total Organic HAP Content If Present at 0.1 Percent or More by Mass

Table 11 to Subpart HHHHH of Part 63—List of Hazardous Air Pollutants That Must Be Counted Toward Total Organic HAP Content If Present at 0.1 Percent or More by Mass

Chemical name CAS No.
1,1,2,2-Tetrachloroethane79-34-5
1,1,2-Trichloroethane79-00-5
1,1-Dimethylhydrazine57-14-7
1,2-Dibromo-3-chloropropane96-12-8
1,2-Diphenylhydrazine122-66-7
1,3-Butadiene106-99-0
1,3-Dichloropropene542-75-6
1,4-Dioxane123-91-1
2,4,6-Trichlorophenol88-06-2
2,4/2,6-Dinitrotoluene (mixture)25321-14-6
2,4-Dinitrotoluene121-14-2
2,4-Toluene diamine95-80-7
2-Nitropropane79-46-9
3,3′-Dichlorobenzidine91-94-1
3,3′-Dimethoxybenzidine119-90-4
3,3′-Dimethylbenzidine119-93-7
4,4′-Methylene bis(2-chloroaniline)101-14-4
Acetaldehyde75-07-0
Acrylamide79-06-1
Acrylonitrile107-13-1
Allyl chloride107-05-1
alpha-Hexachlorocyclohexane (a-HCH)319-84-6
Aniline62-53-3
Benzene71-43-2
Benzidine92-87-5
Benzotrichloride98-07-7
Benzyl chloride100-44-7
beta-Hexachlorocyclohexane (b-HCH)319-85-7
Bis(2-ethylhexyl)phthalate117-81-7
Bis(chloromethyl)ether542-88-1
Bromoform75-25-2
Captan133-06-2
Carbon tetrachloride56-23-5
Chlordane57-74-9
Chlorobenzilate510-15-6
Chloroform67-66-3
Chloroprene126-99-8
Cresols (mixed)1319-77-3
DDE3547-04-4
Dichloroethyl ether111-44-4
Dichlorvos62-73-7
Epichlorohydrin106-89-8
Ethyl acrylate140-88-5
Ethylene dibromide106-93-4
Ethylene dichloride107-06-2
Ethylene oxide75-21-8
Ethylene thiourea96-45-7
Ethylidene dichloride (1,1-Dichloroethane)75-34-3
Formaldehyde50-00-0
Heptachlor76-44-8
Hexachlorobenzene118-74-1
Hexachlorobutadiene87-68-3
Hexachloroethane67-72-1
Hydrazine302-01-2
Isophorone78-59-1
Lindane (hexachlorocyclohexane, all isomers)58-89-9
m-Cresol108-39-4
Methylene chloride75-09-2
Naphthalene91-20-3
Nitrobenzene98-95-3
Nitrosodimethylamine62-75-9
o-Cresol95-48-7
o-Toluidine95-53-4
Parathion56-38-2
p-Cresol106-44-5
p-Dichlorobenzene106-46-7
Pentachloronitrobenzene82-68-8
Pentachlorophenol87-86-5
Propoxur114-26-1
Propylene dichloride78-87-5
Propylene oxide75-56-9
Quinoline91-22-5
Tetrachloroethene127-18-4
Toxaphene8001-35-2
Trichloroethylene79-01-6
Trifluralin1582-09-8
Vinyl bromide593-60-2
Vinyl chloride75-01-4
Vinylidene chloride75-35-4
[85 FR 49751, Aug. 14, 2020]
authority: 42 U.S.C. 7401
source: 57 FR 61992, Dec. 29, 1992, unless otherwise noted.
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