Table 1 to Subpart GGGGG of Part 63—List of Hazardous Air Pollutants

- Table 1 to Subpart GGGGG of Part 63—List of Hazardous Air Pollutants

CAS No. a	Compound name	Fm 305	75070	Acetaldehyde	1.000	75058	Acetonitrile	0.989	98862	Acetophenone	0.314	98862	Acetophenone	0.314	107028	Acrolein	1.000	107131	Acrylonitrile	0.999	107051	Allyl chloride	1.000	71432	Benzene (includes benzene in gasoline)	1.000	98077	Benzotrichloride (isomers and mixture)	0.958	100447	Benzyl chloride	1.000	92524	Biphenyl	0.864	542881	Bis(chloromethyl)ether b	0.999	75252	Bromoform	0.998	106990	1,3-Butadiene	1.000	75150	Carbon disulfide	1.000	56235	Carbon Tetrachloride	1.000	43581	Carbonyl sulfide	1.000	133904	Chloramben	0.633	108907	Chlorobenzene	1.000	67663	Chloroform	1.000	107302	Chloromethyl methyl ether b	1.000	126998	Chloroprene	1.000	98828	Cumene	1.000	94757	2,4-D, salts and esters	0.167	334883	Diazomethane c	0.999	132649	Dibenzofurans	0.967	96128	B1,2-Dibromo-3-chloropropane	1.000	106467	1,4-Dichlorobenzene(p)	1.000	107062	Dichloroethane (Ethylene dichloride)	1.000	111444	Dichloroethyl ether (Bis(2-chloroethylether)	0.757	542756	1,3-Dichloropropene	1.000	64675	Diethyl sulfate	0.0025	79447	Dimethyl carbamoyl chloride c	0.150	77781	Dimethyl sulfate	0.086	121697	N,N-Dimethylaniline	0.0008	51285	2,4-Dinitrophenol	0.0077	121142	2,4-Dinitrotoluene	0.0848	123911	1,4-Dioxane (1,4-Diethyleneoxide)	0.869	106898	Epichlorohydrin (1-Chloro-2,3-epoxypropane)	0.939	106887	1,2-Epoxybutane	1.000	140885	Ethyl acrylate	1.000	100414	Ethyl benzene	1.000	75003	Ethyl chloride (Chloroethane)	1.000	106934	Ethylene dibromide (Dibromoethane)	0.999	107062	Ethylene dichloride (1,2-Dichloroethane)	1.000	151564	Ethylene imine (Aziridine)	0.867	75218	Ethylene oxide	1.000	75343	Ethylidene dichloride (1,1-Dichloroethane) Glycol ethers d that have a Henry's Law Constant value equal to or greater than 0.01 Y/X(1.8 × 10−6 atm/gm-mole/m 3) at 25 °C	1.000 [ e]	118741	Hexachlorobenzene	0.97	87683	Hexachlorobutadiene	0.88	67721	Hexachloroethane	0.499	110543	Hexane	1.000	78591	Isophorone	0.506	58899	Lindane (all isomers)	1.000	67561	Methanol	0.855	74839	Methyl bromide (Bromomethane)	1.000	74873	Methyl chloride (Choromethane)	1.000	71556	Methyl chloroform (1,1,1-Trichloroethane)	1.000	74884	Methyl iodide (Iodomethane)	1.000	108101	Methyl isobutyl ketone (Hexone)	0.979	624839	Methyl isocyanate	1.000	80626	Methyl methacrylate	0.999	1634044	Methyl tert butyl ether	1.000	75092	Methylene chloride (Dichloromethane)	1.000	91203	Naphthalene	0.994	98953	Nitrobenzene	0.394	79469	2-Nitropropane	0.989	82688	Pentachloronitrobenzene (Quintobenzene)	0.839	87865	Pentachlorophenol	0.0898	75445	Phosgene c	1.000	123386	Propionaldehyde	0.999	78875	Propylene dichloride (1,2-Dichloropropane)	1.000	75569	Propylene oxide	1.000	75558	1,2-Propylenimine (2-Methyl aziridine)	0.945	100425	Styrene	1.000	96093	Styrene oxide	0.830	79345	1,1,2,2-Tetrachloroethane	0.999	127184	Tetrachloroethylene (Perchloroethylene)	1.000	108883	Toluene	1.000	95534	o-Toluidine	0.152	120821	1,2,4-Trichlorobenzene	1.000	71556	1,1,1-Trichloroethane (Methyl chlorform)	1.000	79005	1,1,2-Trichloroethane (Vinyltrichloride)	1.000	79016	Trichloroethylene	1.000	95954	2,4,5-Trichlorophenol	0.0108	88062	2,4,6-Trichlorophenol	0.0132	121448	Triethylamine	1.000	540841	2,2,4-Trimethylpentane	1.000	108054	Vinyl acetate	1.000	593602	Vinyl bromide	1.000	75014	Vinyl chloride	1.000	75354	Vinylidene chloride (1,1-Dichloroethylene)	1.000	1330207	Xylenes (isomers and mixture)	1.000	95476	o-Xylenes	1.000	108383	m-Xylenes	1.000	106423	p-Xylenes	1.000

Notes:

Fm 305 Fraction measure factor in Method 305, 40 CFR 305 part 63, appendix A.

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

b Denotes a HAP that hydrolyzes quickly in water, but the hydrolysis products are also HAP chemicals.

c Denotes a HAP that may react violently with water.

d Denotes a HAP that hydrolyzes slowly in water.

e The Fm 305 factors for some of the more common glycol 305 ethers can be obtained by contacting the Waste and Chemical Processes Group, Office of Air Quality Planning and Standards, Research Triangle Park, NC 27711.

[71 FR 69020, Nov. 29, 2006]