Solution means any aqueous or organic solutions, slurries, viscous solutions, suspensions, emulsions, or pastes. State means any State of the United States, the District of Columbia, the Commonwealth of Puerto Rico, Guam, American Samoa, the United States Virgin Islands, the Northern Mariana Islands, any other territory or possession over which the United States has jurisdiction and Indian Country. Threshold planning quantity means, for a substance listed in Appendices A and B of this part, the quantity listed in the column “threshold planning quantity” for that substance. [73 FR 65462, Nov. 3, 2008, as amended at 73 FR 76960, Dec. 18, 2008; 77 FR 16688, Mar. 22, 2012] Back to Top Appendix A to Part 355—The List of Extremely Hazardous Substances and Their Threshold Planning Quantities [Alphabetical Order] Reportable Threshold planning CAS quantity* quantity No. Chemical name Notes (pounds) (pounds) 75­86­5 Acetone Cyanohydrin 10 1,000 1752­ Acetone Thiosemicarbazide 1,000 1,000/10,000 30­3 107­02­ Acrolein 1 500 8 79­06­1 Acrylamide f 5,000 1,000/10,000 107­13­ Acrylonitrile f 100 10,000 1 814­68­ Acrylyl Chloride d 100 100 6 111­69­3 Adiponitrile f 1,000 1,000 116­06­3 Aldicarb b 1 100/10,000 309­00­ Aldrin 1 500/10,000 2 107­18­ Allyl Alcohol 100 1,000 6 107­11­9 Allylamine 500 500 20859­ Aluminum Phosphide a 100 500 73­8 54­62­6 Aminopterin 500 500/10,000 78­53­5 Amiton 500 500 3734­ Amiton Oxalate 100 100/10,000 97­2 7664­ Ammonia f 100 500 41­7 300­62­ Amphetamine 1,000 1,000 9 62­53­3 Aniline f 5,000 1,000 88­05­1 Aniline, 2,4,6­Trimethyl­ 500 500 7783­ Antimony Pentafluoride 500 500 70­2 1397­ Antimycin A b 1,000 1,000/10,000 94­0 86­88­4 ANTU 100 500/10,000 1303­ Arsenic Pentoxide 1 100/10,000 28­2 1327­ Arsenous Oxide d 1 100/10,000 53­3 7784­ Arsenous Trichloride 1 500 34­1 7784­ Arsine 100 100 42­1 2642­ Azinphos­Ethyl 100 100/10,000 71­9 86­50­0 Azinphos­Methyl 1 10/10,000 98­87­3 Benzal Chloride 5,000 500 98­16­8 Benzenamine, 3­(Trifluoromethyl)­ 500 500 100­14­ Benzene, 1­(Chloromethyl)­4­Nitro­ 500 500/10,000 1 98­05­5 Benzenearsonic Acid 10 10/10,000 3615­ Benzimidazole, 4,5­Dichloro­2­(Trifluoromethyl)­ c 500 500/10,000 21­2 98­07­7 Benzotrichloride 10 100 100­44­ Benzyl Chloride 100 500 7 140­29­ Benzyl Cyanide d 500 500 4 15271­ Bicyclo[2.2.1]Heptane­2­Carbonitrile, 5­Chloro­6­((((Methylamino)Carbonyl)Oxy)Imino)­, (1s­(1­ 500 500/10,000 41­7 alpha,2­beta,4­alpha,5­alpha,6E))­ 534­07­ Bis(Chloromethyl) Ketone 10 10/10,000 6 4044­ Bitoscanate 500 500/10,000 65­9 10294­ Boron Trichloride 500 500 34­5 7637­ Boron Trifluoride 500 500 07­2 353­42­ Boron Trifluoride Compound With Methyl Ether (1:1) 1,000 1,000 4 28772­ Bromadiolone 100 100/10,000 56­7 7726­ Bromine f 500 500 95­6 1306­ Cadmium Oxide 100 100/10,000 19­0 2223­ Cadmium Stearate b 1,000 1,000/10,000 93­0 7778­ Calcium Arsenate 1 500/10,000 44­1 8001­ Camphechlor 1 500/10,000 35­2 56­25­7 Cantharidin 100 100/10,000 51­83­2 Carbachol Chloride 500 500/10,000 26419­ Carbamic Acid, Methyl­, O­(((2,4­Dimethyl­1, 3­Dithiolan­2­yl)Methylene)Amino)­ 100 100/10,000 73­8 1563­ Carbofuran 10 10/10,000 66­2 75­15­0 Carbon Disulfide f 100 10,000 786­19­ Carbophenothion 500 500 6 57­74­9 Chlordane 1 1,000 470­90­ Chlorfenvinfos 500 500 6 7782­ Chlorine 10 100 50­5 24934­ Chlormephos 500 500 91­6 999­81­ Chlormequat Chloride d 100 100/10,000 5 79­11­8 Chloroacetic Acid 100 100/10,000 107­07­ Chloroethanol 500 500 3 627­11­2 Chloroethyl Chloroformate 1,000 1,000 67­66­3 Chloroform f 10 10,000 542­88­ Chloromethyl Ether d 10 100 1 107­30­ Chloromethyl Methyl Ether b 10 100 2 3691­ Chlorophacinone 100 100/10,000 35­8 1982­ Chloroxuron 500 500/10,000 47­4 21923­ Chlorthiophos d 500 500 23­9 10025­ Chromic Chloride 1 1/10,000 73­7 62207­ Cobalt, ((2,2′­(1,2­Ethanediylbis (Nitrilomethylidyne)) Bis(6­Fluorophenolato))(2­)­N,N′,O,O′)­ 100 100/10,000 76­5 10210­ Cobalt Carbonyl d 10 10/10,000 68­1 64­86­8 Colchicine d 10 10/10,000 56­72­4 Coumaphos 10 100/10,000 5836­ Coumatetralyl 500 500/10,000 29­3 95­48­7 Cresol, o­ 100 1,000/10,000 535­89­ Crimidine 100 100/10,000 7 4170­ Crotonaldehyde 100 1,000 30­3 123­73­ Crotonaldehyde, (E)­ 100 1,000 9 506­68­ Cyanogen Bromide 1,000 500/10,000 3 506­78­ Cyanogen Iodide 1,000 1,000/10,000 5 2636­ Cyanophos 1,000 1,000 26­2 675­14­ Cyanuric Fluoride 100 100 9 66­81­9 Cycloheximide 100 100/10,000 108­91­ Cyclohexylamine f 10,000 10,000 8 17702­ Decaborane(14) 500 500/10,000 41­9 8065­ Demeton 500 500 48­3 919­86­ Demeton­S­Methyl 500 500 8 10311­ Dialifor 100 100/10,000 84­9 19287­ Diborane 100 100 45­7 111­44­4 Dichloroethyl ether 10 10,000 149­74­ Dichloromethylphenylsilane 1,000 1,000 6 62­73­7 Dichlorvos 10 1,000 141­66­ Dicrotophos 100 100 2 1464­ Diepoxybutane 10 500 53­5 814­49­ Diethyl Chlorophosphate d 500 500 3 71­63­6 Digitoxin b 100 100/10,000 2238­ Diglycidyl Ether 1,000 1,000 07­5 20830­ Digoxin d 10 10/10,000 75­5 115­26­4 Dimefox 500 500 60­51­5 Dimethoate 10 500/10,000 2524­ Dimethyl Phosphorochloridothioate 500 500 03­0 77­78­1 Dimethyl sulfate 100 500 75­78­5 Dimethyldichlorosilane d 500 500 57­14­7 Dimethylhydrazine 10 1,000 99­98­9 Dimethyl­p­Phenylenediamine 10 10/10,000 644­64­ Dimetilan 1 500/10,000 4 534­52­ Dinitrocresol 10 10/10,000 1 88­85­7 Dinoseb 1,000 100/10,000 1420­ Dinoterb 500 500/10,000 07­1 78­34­2 Dioxathion 500 500 82­66­6 Diphacinone 10 10/10,000 152­16­ Diphosphoramide, Octamethyl­ 100 100 9 298­04­ Disulfoton 1 500 4 514­73­ Dithiazanine Iodide 500 500/10,000 8 541­53­ Dithiobiuret 100 100/10,000 7 316­42­ Emetine, Dihydrochloride d 1 1/10,000 7 115­29­7 Endosulfan 1 10/10,000 2778­ Endothion 500 500/10,000 04­3 72­20­8 Endrin 1 500/10,000 106­89­ Epichlorohydrin f 100 1,000 8 2104­ EPN 100 100/10,000 64­5 50­14­6 Ergocalciferol b 1,000 1,000/10,000 379­79­ Ergotamine Tartrate 500 500/10,000 3 1622­ Ethanesulfonyl Chloride, 2­Chloro­ 500 500 32­8 10140­ Ethanol, 1,2­Dichloro­, Acetate 1,000 1,000 87­1 563­12­ Ethion 10 1,000 2 13194­ Ethoprophos 1,000 1,000 48­4 538­07­ Ethylbis(2­Chloroethyl)Amine d 500 500 8 371­62­ Ethylene Fluorohydrin b, d 10 10 0 75­21­8 Ethylene Oxide f 10 1,000 107­15­ Ethylenediamine 5,000 10,000 3 151­56­ Ethyleneimine 1 500 4 542­90­ Ethylthiocyanate 10,000 10,000 5 22224­ Fenamiphos 10 10/10,000 92­6 115­90­2 Fensulfothion d 500 500 4301­ Fluenetil 100 100/10,000 50­2 7782­ Fluorine e 10 500 41­4 640­19­ Fluoroacetamide 100 100/10,000 7 144­49­ Fluoroacetic Acid 10 10/10,000 0 359­06­ Fluoroacetyl Chloride b 10 10 8 51­21­8 Fluorouracil 500 500/10,000 944­22­ Fonofos 500 500 9 50­00­0 Formaldehyde f 100 500 107­16­ Formaldehyde Cyanohydrin d 1,000 1,000 4 23422­ Formetanate Hydrochloride d 100 500/10,000 53­9 2540­ Formothion 100 100 82­1 17702­ Formparanate 100 100/10,000 57­7 21548­ Fosthietan 500 500 32­3 3878­ Fuberidazole 100 100/10,000 19­1 110­00­9 Furan 100 500 13450­ Gallium Trichloride 500 500/10,000 90­3 77­47­4 Hexachlorocyclopentadiene d 10 100 4835­11­ Hexamethylenediamine, N,N′­Dibutyl­ 500 500 4 302­01­ Hydrazine 1 1,000 2 74­90­8 Hydrocyanic Acid 10 100 7647­ Hydrogen Chloride (gas only) f 5,000 500 01­0 7664­ Hydrogen Fluoride 100 100 39­3 7722­ Hydrogen Peroxide (Conc >52%) f 1,000 1,000 84­1 7783­ Hydrogen Selenide 10 10 07­5 7783­ Hydrogen Sulfide f 100 500 06­4 123­31­ Hydroquinone f 100 500/10,000 9 13463­ Iron, Pentacarbonyl­ 100 100 40­6 297­78­ Isobenzan 100 100/10,000 9 78­82­0 Isobutyronitrile d 1,000 1,000 102­36­ Isocyanic Acid, 3,4­Dichlorophenyl Ester 500 500/10,000 3 465­73­ Isodrin 1 100/10,000 6 55­91­4 Isofluorphate b 100 100 4098­ Isophorone Diisocyanate g 500 500 71­9 108­23­ Isopropyl Chloroformate 1,000 1,000 6 119­38­0 Isopropylmethyl­pyrazolyl Dimethylcarbamate 100 500 78­97­7 Lactonitrile 1,000 1,000 21609­ Leptophos 500 500/10,000 90­5 541­25­ Lewisite b, d 10 10 3 58­89­9 Lindane 1 1,000/10,000 7580­ Lithium Hydride a 100 100 67­8 109­77­ Malononitrile 1,000 500/10,000 3 12108­ Manganese, Tricarbonyl Methylcyclopentadienyl d 100 100 13­3 51­75­2 Mechlorethamine b 10 10 950­10­ Mephosfolan 500 500 7 1600­ Mercuric Acetate 500 500/10,000 27­7 7487­ Mercuric Chloride 500 500/10,000 94­7 21908­ Mercuric Oxide 500 500/10,000 53­2 10476­ Methacrolein Diacetate 1,000 1,000 95­6 760­93­ Methacrylic Anhydride 500 500 0 126­98­ Methacrylonitrile d 1,000 500 7 920­46­ Methacryloyl Chloride 100 100 7 30674­ Methacryloyloxyethyl Isocyanate d 100 100 80­7 10265­ Methamidophos 100 100/10,000 92­6 558­25­ Methanesulfonyl Fluoride 1,000 1,000 8 950­37­ Methidathion 500 500/10,000 8 2032­ Methiocarb 10 500/10,000 65­7 16752­ Methomyl d 100 500/10,000 77­5 151­38­ Methoxyethylmercuric Acetate 500 500/10,000 2 80­63­7 Methyl 2­Chloroacrylate 500 500 74­83­9 Methyl Bromide f 1,000 1,000 79­22­1 Methyl Chloroformate d 1,000 500 60­34­4 Methyl Hydrazine 10 500 624­83­ Methyl Isocyanate 10 500 9 556­61­ Methyl Isothiocyanate a 500 500 6 74­93­1 Methyl Mercaptan f 100 500 3735­ Methyl Phenkapton 500 500 23­7 676­97­ Methyl Phosphonic Dichloride a 100 100 1 556­64­ Methyl Thiocyanate 10,000 10,000 9 78­94­4 Methyl Vinyl Ketone 10 10 502­39­ Methylmercuric Dicyanamide 500 500/10,000 6 75­79­6 Methyltrichlorosilane d 500 500 1129­41­ Metolcarb 1,000 100/10,000 5 7786­ Mevinphos 10 500 34­7 315­18­ Mexacarbate d 1,000 500/10,000 4 50­07­7 Mitomycin C 10 500/10,000 6923­ Monocrotophos 10 10/10,000 22­4 2763­ Muscimol 1,000 500/10,000 96­4 505­60­ Mustard Gas d 500 500 2 13463­ Nickel Carbonyl 10 1 39­3 54­11­5 Nicotine b 100 100 65­30­5 Nicotine Sulfate 100 100/10,000 7697­ Nitric Acid 1,000 1,000 37­2 10102­ Nitric Oxide b 10 100 43­9 98­95­3