40 CFR Appendix Table 7 to Subpart QQQQ of Part 63 - 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-Tetrachloroethane	79–34–5
1,1,2-Trichloroethane	79–00–5
1,1-Dimethylhydrazine	57–14–7
1,2-Dibromo-3-chloropropane	96–12–8
1,2-Diphenylhydrazine	122–66–7
1,3-Butadiene	106–99–0
1,3-Dichloropropene	542–75–6
1,4-Dioxane 123–91–1
2,4,6-Trichlorophenol	88–06–2
2,4/2,6-Dinitrotoluene (mixture)	25321–14–6
2,4-Dinitrotoluene	121–14–2
2,4-Toluene diamine	95–80–7
2-Nitropropane	79–46–9
3,3′-Dichlorobenzidine	91–94–1
3,3′-Dimethoxybenzidine	119–90–4
3,3′-Dimethylbenzidine	119–93–7
4,4′-Methylene bis(2-chloroaniline)	101–14–4
Acetaldehyde	75–07–0
Acrylamide	79–06–1
Acrylonitrile	107–13–1
Allyl chloride	107–05–1
alpha-Hexachlorocyclohexane (a-HCH)	319–84–6
Aniline	62–53–3
Benzene	71–43–2
Benzidine	92–87–5
Benzotrichloride	98–07–7
Benzyl chloride	100–44–7
beta-Hexachlorocyclohexane (b-HCH)	319–85–7
Bis(2-ethylhexyl)phthalate	117–81–7
Bis(chloromethyl)ether	542–88–1
Bromoform	75–25–2
Captan	133–06–2
Carbon tetrachloride	56–23–5
Chlordane	57–74–9
Chlorobenzilate	510–15–6
Chloroform	67–66–3
Chloroprene	126–99–8
Cresols (mixed)	1319–77–3
DDE	3547–04–4
Dichloroethyl ether	111–44–4
Dichlorvos	62–73–7
Epichlorohydrin	106–89–8
Ethyl acrylate	140–88–5
Ethylene dibromide	106–93–4
Ethylene dichloride	107–06–2
Ethylene oxide	75–21–8
Ethylene thiourea	96–45–7
Ethylidene dichloride (1,1-Dichloroethane)	75–34–3
Formaldehyde	50–00–0
Heptachlor	76–44–8
Hexachlorobenzene	118–74–1
Hexachlorobutadiene	87–68–3
Hexachloroethane	67–72–1
Hydrazine	302–01–2
Isophorone	78–59–1
Lindane (hexachlorocyclohexane, all isomers)	58–89–9
m-Cresol	108–39–4
Methylene chloride	75–09–2
Naphthalene	91–20–3
Nitrobenzene	98–95–3
Nitrosodimethylamine	62–75–9
o-Cresol	95–48–7
o-Toluidine	95–53–4
Parathion	56–38–2
p-Cresol	106–44–5
p-Dichlorobenzene	106–46–7
Pentachloronitrobenzene	82–68–8
Pentachlorophenol	87–86–5
Propoxur	114–26–1
Propylene dichloride	78–87–5
Propylene oxide	75–56–9
Quinoline	91–22–5
Tetrachloroethene	127–18–4
Toxaphene	8001–35–2
Trichloroethylene	79–01–6
Trifluralin	1582–09–8
Vinyl bromide	593–60–2
Vinyl chloride	75–01–4
Vinylidene chloride	75–35–4

[88 FR 14287, Mar. 8, 2023]