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Home Page > Executive Branch > Code of Federal Regulations > Electronic Code of Federal Regulations

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e-CFR Data is current as of February 12, 2009


Title 40: Protection of Environment
PART 355—EMERGENCY PLANNING AND NOTIFICATION
Subpart D—Additional Provisions

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Appendix A to Part 355—The List of Extremely Hazardous Substances and Their Threshold Planning Quantities

Appendix A to Part 355—The List of Extremely Hazardous Substances and Their Threshold Planning Quantities

[Alphabetical Order]

CAS No.Chemical nameNotesReportable quantity*
(pounds)		Threshold planning quantity
(pounds)
75–86–5Acetone Cyanohydrin101,000
1752–30–3Acetone Thiosemicarbazide1,0001,000/10,000
107–02–8Acrolein1500
79–06–1Acrylamidef5,0001,000/10,000
107–13–1Acrylonitrilef10010,000
814–68–6Acrylyl Chlorided100100
111–69–3Adiponitrilef1,0001,000
116–06–3Aldicarbb1100/10,000
309–00–2Aldrin1500/10,000
107–18–6Allyl Alcohol1001,000
107–11–9Allylamine500500
20859–73–8Aluminum Phosphidea100500
54–62–6Aminopterin500500/10,000
78–53–5Amiton500500
3734–97–2Amiton Oxalate100100/10,000
7664–41–7Ammoniaf100500
300–62–9Amphetamine1,0001,000
62–53–3Anilinef5,0001,000
88–05–1Aniline, 2,4,6-Trimethyl-500500
7783–70–2Antimony Pentafluoride500500
1397–94–0Antimycin Ab1,0001,000/10,000
86–88–4ANTU100500/10,000
1303–28–2Arsenic Pentoxide1100/10,000
1327–53–3Arsenous Oxided1100/10,000
7784–34–1Arsenous Trichloride1500
7784–42–1Arsine100100
2642–71–9Azinphos-Ethyl100100/10,000
86–50–0Azinphos-Methyl110/10,000
98–87–3Benzal Chloride5,000500
98–16–8Benzenamine, 3-(Trifluoromethyl)-500500
100–14–1Benzene, 1-(Chloromethyl)-4-Nitro-500500/10,000
98–05–5Benzenearsonic Acid1010/10,000
3615–21–2Benzimidazole, 4,5-Dichloro-2-(Trifluoromethyl)-c500500/10,000
98–07–7Benzotrichloride10100
100–44–7Benzyl Chloride100500
140–29–4Benzyl Cyanided500500
15271–41–7Bicyclo[2.2.1]Heptane-2-Carbonitrile, 5-Chloro-6-((((Methylamino)Carbonyl)Oxy)Imino)-, (1s-(1-alpha,2-beta,4-alpha,5-alpha,6E))-500500/10,000
534–07–6Bis(Chloromethyl) Ketone1010/10,000
4044–65–9Bitoscanate500500/10,000
10294–34–5Boron Trichloride500500
7637–07–2Boron Trifluoride500500
353–42–4Boron Trifluoride Compound With Methyl Ether (1:1)1,0001,000
28772–56–7Bromadiolone100100/10,000
7726–95–6Brominef500500
1306–19–0Cadmium Oxide100100/10,000
2223–93–0Cadmium Stearateb1,0001,000/10,000
7778–44–1Calcium Arsenate1500/10,000
8001–35–2Camphechlor1500/10,000
56–25–7Cantharidin100100/10,000
51–83–2Carbachol Chloride500500/10,000
26419–73–8Carbamic Acid, Methyl-, O-(((2,4-Dimethyl-1, 3-Dithiolan-2-yl)Methylene)Amino)-100100/10,000
1563–66–2Carbofuran1010/10,000
75–15–0Carbon Disulfidef10010,000
786–19–6Carbophenothion500500
57–74–9Chlordane11,000
470–90–6Chlorfenvinfos500500
7782–50–5Chlorine10100
24934–91–6Chlormephos500500
999–81–5Chlormequat Chlorided100100/10,000
79–11–8Chloroacetic Acid100100/10,000
107–07–3Chloroethanol500500
627–11–2Chloroethyl Chloroformate1,0001,000
67–66–3Chloroformf1010,000
542–88–1Chloromethyl Etherd10100
107–30–2Chloromethyl Methyl Etherb10100
3691–35–8Chlorophacinone100100/10,000
1982–47–4Chloroxuron500500/10,000
21923–23–9Chlorthiophosd500500
10025–73–7Chromic Chloride11/10,000
62207–76–5Cobalt, ((2,2'-(1,2-Ethanediylbis (Nitrilomethylidyne)) Bis(6-Fluorophenolato))(2-)-N,N',O,O')-100100/10,000
10210–68–1Cobalt Carbonyld1010/10,000
64–86–8Colchicined1010/10,000
56–72–4Coumaphos10100/10,000
5836–29–3Coumatetralyl500500/10,000
95–48–7Cresol, o-1001,000/10,000
535–89–7Crimidine100100/10,000
4170–30–3Crotonaldehyde1001,000
123–73–9Crotonaldehyde, (E)-1001,000
506–68–3Cyanogen Bromide1,000500/10,000
506–78–5Cyanogen Iodide1,0001,000/10,000
2636–26–2Cyanophos1,0001,000
675–14–9Cyanuric Fluoride100100
66–81–9Cycloheximide100100/10,000
108–91–8Cyclohexylaminef10,00010,000
17702–41–9Decaborane(14)500500/10,000
8065–48–3Demeton500500
919–86–8Demeton-S-Methyl500500
10311–84–9Dialifor100100/10,000
19287–45–7Diborane100100
111–44–4Dichloroethyl ether1010,000
149–74–6Dichloromethylphenylsilane1,0001,000
62–73–7Dichlorvos101,000
141–66–2Dicrotophos100100
1464–53–5Diepoxybutane10500
814–49–3Diethyl Chlorophosphated500500
71–63–6Digitoxinb100100/10,000
2238–07–5Diglycidyl Ether1,0001,000
20830–75–5Digoxind1010/10,000
115–26–4Dimefox500500
60–51–5Dimethoate10500/10,000
2524–03–0Dimethyl Phosphorochloridothioate500500
77–78–1Dimethyl sulfate100500
75–78–5Dimethyldichlorosilaned500500
57–14–7Dimethylhydrazine101,000
99–98–9Dimethyl-p-Phenylenediamine1010/10,000
644–64–4Dimetilan1500/10,000
534–52–1Dinitrocresol1010/10,000
88–85–7Dinoseb1,000100/10,000
1420–07–1Dinoterb500500/10,000
78–34–2Dioxathion500500
82–66–6Diphacinone1010/10,000
152–16–9Diphosphoramide, Octamethyl-100100
298–04–4Disulfoton1500
514–73–8Dithiazanine Iodide500500/10,000
541–53–7Dithiobiuret100100/10,000
316–42–7Emetine, Dihydrochlorided11/10,000
115–29–7Endosulfan110/10,000
2778–04–3Endothion500500/10,000
72–20–8Endrin1500/10,000
106–89–8Epichlorohydrinf1001,000
2104–64–5EPN100100/10,000
50–14–6Ergocalciferolb1,0001,000/10,000
379–79–3Ergotamine Tartrate500500/10,000
1622–32–8Ethanesulfonyl Chloride, 2-Chloro-500500
10140–87–1Ethanol, 1,2-Dichloro-, Acetate1,0001,000
563–12–2Ethion101,000
13194–48–4Ethoprophos1,0001,000
538–07–8Ethylbis(2-Chloroethyl)Amined500500
371–62–0Ethylene Fluorohydrinb, d1010
75–21–8Ethylene Oxidef101,000
107–15–3Ethylenediamine5,00010,000
151–56–4Ethyleneimine1500
542–90–5Ethylthiocyanate10,00010,000
22224–92–6Fenamiphos1010/10,000
115–90–2Fensulfothiond500500
4301–50–2Fluenetil100100/10,000
7782–41–4Fluorinee10500
640–19–7Fluoroacetamide100100/10,000
144–49–0Fluoroacetic Acid1010/10,000
359–06–8Fluoroacetyl Chlorideb1010
51–21–8Fluorouracil500500/10,000
944–22–9Fonofos500500
50–00–0Formaldehydef100500
107–16–4Formaldehyde Cyanohydrind1,0001,000
23422–53–9Formetanate Hydrochlorided100500/10,000
2540–82–1Formothion100100
17702–57–7Formparanate100100/10,000
21548–32–3Fosthietan500500
3878–19–1Fuberidazole100100/10,000
110–00–9Furan100500
13450–90–3Gallium Trichloride500500/10,000
77–47–4Hexachlorocyclopentadiened10100
4835–11–4Hexamethylenediamine, N,N'-Dibutyl-500500
302–01–2Hydrazine11,000
74–90–8Hydrocyanic Acid10100
7647–01–0Hydrogen Chloride (gas only)f5,000500
7664–39–3Hydrogen Fluoride100100
7722–84–1Hydrogen Peroxide (Conc > 52%)f1,0001,000
7783–07–5Hydrogen Selenide1010
7783–06–4Hydrogen Sulfidef100500
123–31–9Hydroquinonef100500/10,000
13463–40–6Iron, Pentacarbonyl-100100
297–78–9Isobenzan100100/10,000
78–82–0Isobutyronitriled1,0001,000
102–36–3Isocyanic Acid, 3,4-Dichlorophenyl Ester500500/10,000
465–73–6Isodrin1100/10,000
55–91–4Isofluorphateb100100
4098–71–9Isophorone Diisocyanateg500500
108–23–6Isopropyl Chloroformate1,0001,000
119–38–0Isopropylmethyl-pyrazolyl Dimethylcarbamate100500
78–97–7Lactonitrile1,0001,000
21609–90–5Leptophos500500/10,000
541–25–3Lewisiteb, d1010
58–89–9Lindane11,000/10,000
7580–67–8Lithium Hydridea100100
109–77–3Malononitrile1,000500/10,000
12108–13–3Manganese, Tricarbonyl Methylcyclopentadienyld100100
51–75–2Mechlorethamineb1010
950–10–7Mephosfolan500500
1600–27–7Mercuric Acetate500500/10,000
7487–94–7Mercuric Chloride500500/10,000
21908–53–2Mercuric Oxide500500/10,000
10476–95–6Methacrolein Diacetate1,0001,000
760–93–0Methacrylic Anhydride500500
126–98–7Methacrylonitriled1,000500
920–46–7Methacryloyl Chloride100100
30674–80–7Methacryloyloxyethyl Isocyanated100100
10265–92–6Methamidophos100100/10,000
558–25–8Methanesulfonyl Fluoride1,0001,000
950–37–8Methidathion500500/10,000
2032–65–7Methiocarb10500/10,000
16752–77–5Methomyld100500/10,000
151–38–2Methoxyethylmercuric Acetate500500/10,000
80–63–7Methyl 2-Chloroacrylate500500
74–83–9Methyl Bromidef1,0001,000
79–22–1Methyl Chloroformated1,000500
60–34–4Methyl Hydrazine10500
624–83–9Methyl Isocyanate10500
556–61–6Methyl Isothiocyanatea500500
74–93–1Methyl Mercaptanf100500
3735–23–7Methyl Phenkapton500500
676–97–1Methyl Phosphonic Dichloridea100100
556–64–9Methyl Thiocyanate10,00010,000
78–94–4Methyl Vinyl Ketone1010
502–39–6Methylmercuric Dicyanamide500500/10,000
75–79–6Methyltrichlorosilaned500500
1129–41–5Metolcarb1,000100/10,000
7786–34–7Mevinphos10500
315–18–4Mexacarbated1,000500/10,000
50–07–7Mitomycin C10500/10,000
6923–22–4Monocrotophos1010/10,000
2763–96–4Muscimol1,000500/10,000
505–60–2Mustard Gasd500500
13463–39–3Nickel Carbonyl101
54–11–5Nicotineb100100
65–30–5Nicotine Sulfate100100/10,000
7697–37–2Nitric Acid1,0001,000
10102–43–9Nitric Oxideb10100
98–95–3Nitrobenzenef1,00010,000
1122–60–7Nitrocyclohexane500500
10102–44–0Nitrogen Dioxide10100
62–75–9Nitrosodimethylamined101,000
991–42–4Norbormide100100/10,000
0Organorhodium Complex (PMN–82–147)1010/10,000
630–60–4Ouabainb100100/10,000
23135–22–0Oxamyl100100/10,000
78–71–7Oxetane, 3,3-Bis(Chloromethyl)-500500
2497–07–6Oxydisulfotond500500
10028–15–6Ozone100100
1910–42–5Paraquat Dichloride1010/10,000
2074–50–2Paraquat Methosulfate1010/10,000
56–38–2Parathionb10100
298–00–0Parathion-Methylb100100/10,000
12002–03–8Paris Green1500/10,000
19624–22–7Pentaborane500500
2570–26–5Pentadecylamine100100/10,000
79–21–0Peracetic Acid500500
594–42–3Perchloromethylmercaptan100500
108–95–2Phenol1,000500/10,000
4418–66–0Phenol, 2,2'-Thiobis(4-Chloro-6-Methyl)-100100/10,000
64–00–6Phenol, 3-(1-Methylethyl)-, Methylcarbamate10500/10,000
58–36–6Phenoxarsine, 10,10'-Oxydi-500500/10,000
696–28–6Phenyl Dichloroarsined1500
59–88–1Phenylhydrazine Hydrochloride1,0001,000/10,000
62–38–4Phenylmercury Acetate100500/10,000
2097–19–0Phenylsilatraned100100/10,000
103–85–5Phenylthiourea100100/10,000
298–02–2Phorate1010
4104–14–7Phosacetim100100/10,000
947–02–4Phosfolan100100/10,000
75–44–5Phosgenef1010
13171–21–6Phosphamidon100100
7803–51–2Phosphine100500
2703–13–1Phosphonothioic Acid, Methyl-, O-Ethyl O-(4-(Methylthio) Phenyl) Ester500500
50782–69–9Phosphonothioic Acid, Methyl-, S-(2-(Bis(1Methylethyl)Amino)Ethyl) O-Ethyl Ester100100
2665–30–7Phosphonothioic Acid, Methyl-, O-(4-Nitrophenyl) O-Phenyl Ester500500
3254–63–5Phosphoric Acid, Dimethyl 4-(Methylthio)Phenyl Ester500500
2587–90–8Phosphorothioic Acid, O,O-Dimethyl-S-(2-Methylthio) Ethyl Esterb, c500500
7723–14–0Phosphorusa, d1100
10025–87–3Phosphorus Oxychloride1,000500
10026–13–8Phosphorus Pentachloridea500500
7719–12–2Phosphorus Trichloride1,0001,000
57–47–6Physostigmine100100/10,000
57–64–7Physostigmine, Salicylate (1:1)100100/10,000
124–87–8Picrotoxin500500/10,000
110–89–4Piperidine1,0001,000
23505–41–1Pirimifos-Ethyl1,0001,000
10124–50–2Potassium Arsenite1500/10,000
151–50–8Potassium Cyanidea10100
506–61–6Potassium Silver Cyanidea1500
2631–37–0Promecarbd1,000500/10,000
106–96–7Propargyl Bromide1010
57–57–8Propiolactone, Beta-10500
107–12–0Propionitrile10500
542–76–7Propionitrile, 3-Chloro-1,0001,000
70–69–9Propiophenone, 4-Amino-c100100/10,000
109–61–5Propyl Chloroformate500500
75–56–9Propylene Oxidef10010,000
75–55–8Propyleneimine110,000
2275–18–5Prothoate100100/10,000
129–00–0Pyreneb5,0001,000/10,000
140–76–1Pyridine, 2-Methyl-5-Vinyl-500500
504–24–5Pyridine, 4-Amino-d1,000500/10,000
1124–33–0Pyridine, 4-Nitro-,l-Oxide500500/10,000
53558–25–1Pyriminild100100/10,000
14167–18–1Salcomine500500/10,000
107–44–8Sarind1010
7783–00–8Selenious Acid101,000/10,000
7791–23–3Selenium Oxychloride500500
563–41–7Semicarbazide Hydrochloride1,0001,000/10,000
3037–72–7Silane, (4-Aminobutyl)Diethoxymethyl-1,0001,000
7631–89–2Sodium Arsenate11,000/10,000
7784–46–5Sodium Arsenite1500/10,000
26628–22–8Sodium Azide (Na(N3))a1,000500
124–65–2Sodium Cacodylate100100/10,000
143–33–9Sodium Cyanide (Na(CN))a10100
62–74–8Sodium Fluoroacetate1010/10,000
13410–01–0Sodium Selenate100100/10,000
10102–18–8Sodium Selenited100100/10,000
10102–20–2Sodium Tellurite500500/10,000
900–95–8Stannane, Acetoxytriphenyl-c500500/10,000
57–24–9Strychnineb10100/10,000
60–41–3Strychnine Sulfate10100/10,000
3689–24–5Sulfotep100500
3569–57–1Sulfoxide, 3-Chloropropyl Octyl500500
7446–09–5Sulfur Dioxidef500500
7783–60–0Sulfur Tetrafluoride100100
7446–11–9Sulfur Trioxidea100100
7664–93–9Sulfuric Acid1,0001,000
77–81–6Tabunb, d1010
7783–80–4Tellurium Hexafluoridee100100
107–49–3TEPP10100
13071–79–9Terbufosd100100
78–00–2Tetraethylleadb10100
597–64–8Tetraethyltinb100100
75–74–1Tetramethylleadb, f100100
509–14–8Tetranitromethane10500
10031–59–1Thallium Sulfated100100/10,000
6533–73–9Thallous Carbonateb, d100100/10,000
7791–12–0Thallous Chlorideb, d100100/10,000
2757–18–8Thallous Malonateb, d100100/10,000
7446–18–6Thallous Sulfate100100/10,000
2231–57–4Thiocarbazide1,0001,000/10,000
39196–18–4Thiofanox100100/10,000
297–97–2Thionazin100500
108–98–5Thiophenol100500
79–19–6Thiosemicarbazide100100/10,000
5344–82–1Thiourea, (2-Chlorophenyl)-100100/10,000
614–78–8Thiourea, (2-Methylphenyl)-500500/10,000
7550–45–0Titanium Tetrachloride1,000100
584–84–9Toluene 2,4-Diisocyanate100500
91–08–7Toluene 2,6-Diisocyanate100100
110–57–6Trans-1,4-Dichlorobutene500500
1031–47–6Triamiphos500500/10,000
24017–47–8Triazofos500500
76–02–8Trichloroacetyl Chloride500500
115–21–9Trichloroethylsilaned500500
327–98–0Trichloronatee500500
98–13–5Trichlorophenylsilaned500500
1558–25–4Trichloro(Chloromethyl)Silane100100
27137–85–5Trichloro(Dichlorophenyl) Silane500500
998–30–1Triethoxysilane500500
75–77–4Trimethylchlorosilane1,0001,000
824–11–3Trimethylolpropane Phosphited100100/10,000
1066–45–1Trimethyltin Chloride500500/10,000
639–58–7Triphenyltin Chloride500500/10,000
555–77–1Tris(2-Chloroethyl)Amined100100
2001–95–8Valinomycinb1,0001,000/10,000
1314–62–1Vanadium Pentoxide1,000100/10,000
108–05–4Vinyl Acetate Monomerf5,0001,000
81–81–2Warfarin100500/10,000
129–06–6Warfarin Sodiumd100100/10,000
28347–13–9Xylylene Dichloride100100/10,000
58270–08–9Zinc, Dichloro(4,4-Dimethyl-5((((Methylamino)Carbonyl) Oxy)Imino)Pentanenitrile)-, (T-4)-100100/10,000
1314–84–7Zinc Phosphidea100500

*Only the statutory or final RQ is shown. For more information, see 40 CFR 355.61.

Notes:

a. This material is a reactive solid. The TPQ does not default to 10,000 pounds for non-powder, non-molten, non-solution form.

b. The calculated TPQ changed after technical review as described in a technical support document for the final rule, April 22, 1987.

c. Chemicals added by final rule, April 22, 1987.

d. Revised TPQ based on new or re-evaluated toxicity data, April 22, 1987.

e. The TPQ was revised due to calculation error, April 22, 1987.

f. Chemicals on the original list that do not meet toxicity criteria but because of their acute lethality, high production volume and known risk are considered chemicals of concern (“Other chemicals”), November 17, 1986 and February 15, 1990.

g. The TPQ was recalculated (September 8, 2003) since it was mistakenly calculated in the April 22, 1987 final rule under the wrong assumption that this chemical is a reactive solid, when in fact it is a liquid. RQ for this chemical was adjusted on September 11, 2006.

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