- Table 7 to Subpart QQQQ of Part 63—List of HAP That Must Be Counted Toward 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-Dioxane 123-91-1 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
[88 FR 14287, Mar. 8, 2023]