Regulations last checked for updates: May 18, 2024

Title 40 - Protection of Environment last revised: May 16, 2024
Appendix - Table 9 to Subpart G of Part 63—Organic HAP's Subject to the Wastewater Provisions for Process Units at New and Existing Sources and Corresponding Fraction Removed (Fr) Values
Chemical name CAS No. a Fr
Acetaldehyde750700.95
Acetonitrile750580.62
Acetophenone988620.72
Acrolein1070280.96
Acrylonitrile1071310.96
Allyl chloride1070510.99
Benzene714320.99
Benzyl chloride1004470.99
Biphenyl925240.99
Bromoform752520.99
Butadiene (1,3-)1069900.99
Carbon disulfide751500.99
Carbon tetrachloride562350.99
Chlorobenzene1089070.99
Chloroform676630.99
Chloroprene (2-Chloro-1,3-butadiene)1269980.99
Cumene988280.99
Dichlorobenzene (p-)1064670.99
Dichloroethane (1,2-) (Ethylene dichloride)1070620.99
Dichloroethyl ether (Bis(2-chloroethyl)ether)1114440.87
Dichloropropene (1,3-)5427560.99
Diethyl sulfate646750.90
Dimethyl sulfate777810.53
Dimethylaniline (N,N-)1216970.99
Dimethylhydrazine (1,1-)571470.57
Dinitrophenol (2,4-)512850.99
Dinitrotoluene (2,4-)1211420.38
Dioxane (1,4-) (1,4-Diethyleneoxide)1239110.37
Epichlorohydrin(1-Chloro-2,3-epoxypropane)1068980.91
Ethyl acrylate1408850.99
Ethylbenzene1004140.99
Ethyl chloride (Chloroethane)750030.99
Ethylene dibromide (Dibromomethane)1069340.99
Ethylene glycol dimethyl ether1107140.90
Ethylene glycol monobutyl ether acetate1120720.76
Ethylene glycol monomethyl ether acetate1104960.28
Ethylene oxide752180.98
Ethylidene dichloride (1,1-Dichloroethane)753430.99
Hexachlorobenzene1187410.99
Hexachlorobutadiene876830.99
Hexachloroethane677210.99
Hexane1105430.99
Isophorone785910.60
Methanol675610.31
Methyl bromide (Bromomethane)748390.99
Methyl chloride (Chloromethane)748730.99
Methyl isobutyl ketone (Hexone)1081010.99
Methyl methacrylate806260.98
Methyl tert-butyl ether16340440.99
Methylene chloride (Dichloromethane)750920.99
Naphthalene912030.99
Nitrobenzene989530.80
Nitropropane (2-)794690.98
Phosgene754450.99
Propionaldehyde1233860.99
Propylene dichloride (1,2-Dichloropropane)788750.99
Propylene oxide755690.99
Styrene1004250.99
Tetrachloroethane (1,1,2,2-)793450.99
Tetrachloroethylene (Perchloroethylene)1271840.99
Toluene1088830.99
Toluidine (o-)955340.44
Trichlorobenzene (1,2,4-)1208210.99
Trichloroethane (1,1,1-) (Methyl chloroform)715560.99
Trichloroethane (1,1,2-) (Vinyl trichloride)790050.99
Trichloroethylene790160.99
Trichlorophenol (2,4,5-)959540.96
Triethylamine1214480.99
Trimethylpentane (2,2,4-)5408410.99
Vinyl acetate1080540.99
Vinyl chloride (Chloroethylene)750140.99
Vinylidene chloride (1,1-Dichloroethylene)753540.99
Xylene (m-)1083830.99
Xylene (o-)954760.99
Xylene (p-)1064230.99

a CAS numbers refer to the Chemical Abstracts Service registry number assigned to specific compounds, isomers, or mixtures of compounds.

[59 FR 19468, Apr. 22, 1994, as amended at 71 FR 76615, Dec. 21, 2006]
authority: 42 U.S.C. 7401
source: 57 FR 61992, Dec. 29, 1992, unless otherwise noted.