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Code of Federal Regulations (Last Updated: November 8, 2024) |
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Title 40 - Protection of Environment |
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Chapter I - Environmental Protection Agency |
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SubChapter J - Superfund, Emergency Planning, and Community Right-to-Know Programs |
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Part 355 - Emergency Planning and Notification |
Appendix A to Part 355 - The List of Extremely Hazardous Substances and Their Threshold Planning Quantities
Latest version.
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Appendix A to Part 355 - The List of Extremely Hazardous Substances and Their Threshold Planning Quantities
[Alphabetical Order]
CAS No. Chemical name Notes Reportable quantity *
(pounds)Threshold planning quantity
(pounds)75-86-5 Acetone Cyanohydrin 10 1,000 1752-30-3 Acetone Thiosemicarbazide 1,000 1,000/10,000 107-02-8 Acrolein 1 500 79-06-1 Acrylamide f 5,000 1,000/10,000 107-13-1 Acrylonitrile f 100 10,000 814-68-6 Acrylyl Chloride d 100 100 111-69-3 Adiponitrile f 1,000 1,000 116-06-3 Aldicarb b 1 100/10,000 309-00-2 Aldrin 1 500/10,000 107-18-6 Allyl Alcohol 100 1,000 107-11-9 Allylamine 500 500 20859-73-8 Aluminum Phosphide a 100 500 54-62-6 Aminopterin 500 500/10,000 78-53-5 Amiton 500 500 3734-97-2 Amiton Oxalate 100 100/10,000 7664-41-7 Ammonia f 100 500 300-62-9 Amphetamine 1,000 1,000 62-53-3 Aniline f 5,000 1,000 88-05-1 Aniline, 2,4,6-Trimethyl- 500 500 7783-70-2 Antimony Pentafluoride 500 500 1397-94-0 Antimycin A b 1,000 1,000/10,000 86-88-4 ANTU 100 500/10,000 1303-28-2 Arsenic Pentoxide 1 100/10,000 1327-53-3 Arsenous Oxide d 1 100/10,000 7784-34-1 Arsenous Trichloride 1 500 7784-42-1 Arsine 100 100 2642-71-9 Azinphos-Ethyl 100 100/10,000 86-50-0 Azinphos-Methyl 1 10/10,000 98-87-3 Benzal Chloride 5,000 500 98-16-8 Benzenamine, 3-(Trifluoromethyl)- 500 500 100-14-1 Benzene, 1-(Chloromethyl)-4-Nitro- 500 500/10,000 98-05-5 Benzenearsonic Acid 10 10/10,000 3615-21-2 Benzimidazole, 4,5-Dichloro-2-(Trifluoromethyl)- c 500 500/10,000 98-07-7 Benzotrichloride 10 100 100-44-7 Benzyl Chloride 100 500 140-29-4 Benzyl Cyanide d 500 500 15271-41-7 Bicyclo[2.2.1]Heptane-2-Carbonitrile, 5-Chloro-6-((((Methylamino)Carbonyl)Oxy)Imino)-, (1s-(1-alpha,2-beta,4-alpha,5-alpha,6E))- 500 500/10,000 534-07-6 Bis(Chloromethyl) Ketone 10 10/10,000 4044-65-9 Bitoscanate 500 500/10,000 10294-34-5 Boron Trichloride 500 500 7637-07-2 Boron Trifluoride 500 500 353-42-4 Boron Trifluoride Compound With Methyl Ether (1:1) 1,000 1,000 28772-56-7 Bromadiolone 100 100/10,000 7726-95-6 Bromine f 500 500 1306-19-0 Cadmium Oxide 100 100/10,000 2223-93-0 Cadmium Stearate b 1,000 1,000/10,000 7778-44-1 Calcium Arsenate 1 500/10,000 8001-35-2 Camphechlor 1 500/10,000 56-25-7 Cantharidin 100 100/10,000 51-83-2 Carbachol Chloride 500 500/10,000 26419-73-8 Carbamic Acid, Methyl-, O-(((2,4-Dimethyl-1, 3-Dithiolan-2-yl)Methylene)Amino)- 100 100/10,000 1563-66-2 Carbofuran 10 10/10,000 75-15-0 Carbon Disulfide f 100 10,000 786-19-6 Carbophenothion 500 500 57-74-9 Chlordane 1 1,000 470-90-6 Chlorfenvinfos 500 500 7782-50-5 Chlorine 10 100 24934-91-6 Chlormephos 500 500 999-81-5 Chlormequat Chloride d 100 100/10,000 79-11-8 Chloroacetic Acid 100 100/10,000 107-07-3 Chloroethanol 500 500 627-11-2 Chloroethyl Chloroformate 1,000 1,000 67-66-3 Chloroform f 10 10,000 542-88-1 Chloromethyl Ether d 10 100 107-30-2 Chloromethyl Methyl Ether b 10 100 3691-35-8 Chlorophacinone 100 100/10,000 1982-47-4 Chloroxuron 500 500/10,000 21923-23-9 Chlorthiophos d 500 500 10025-73-7 Chromic Chloride 1 1/10,000 62207-76-5 Cobalt, ((2,2′-(1,2-Ethanediylbis (Nitrilomethylidyne)) Bis(6-Fluorophenolato))(2-)-N,N′,O,O′)- 100 100/10,000 10210-68-1 Cobalt Carbonyl d 10 10/10,000 64-86-8 Colchicine d 10 10/10,000 56-72-4 Coumaphos 10 100/10,000 5836-29-3 Coumatetralyl 500 500/10,000 95-48-7 Cresol, o- 100 1,000/10,000 535-89-7 Crimidine 100 100/10,000 4170-30-3 Crotonaldehyde 100 1,000 123-73-9 Crotonaldehyde, (E)- 100 1,000 506-68-3 Cyanogen Bromide 1,000 500/10,000 506-78-5 Cyanogen Iodide 1,000 1,000/10,000 2636-26-2 Cyanophos 1,000 1,000 675-14-9 Cyanuric Fluoride 100 100 66-81-9 Cycloheximide 100 100/10,000 108-91-8 Cyclohexylamine f 10,000 10,000 17702-41-9 Decaborane(14) 500 500/10,000 8065-48-3 Demeton 500 500 919-86-8 Demeton-S-Methyl 500 500 10311-84-9 Dialifor 100 100/10,000 19287-45-7 Diborane 100 100 111-44-4 Dichloroethyl ether 10 10,000 149-74-6 Dichloromethylphenylsilane 1,000 1,000 62-73-7 Dichlorvos 10 1,000 141-66-2 Dicrotophos 100 100 1464-53-5 Diepoxybutane 10 500 814-49-3 Diethyl Chlorophosphate d 500 500 71-63-6 Digitoxin b 100 100/10,000 2238-07-5 Diglycidyl Ether 1,000 1,000 20830-75-5 Digoxin d 10 10/10,000 115-26-4 Dimefox 500 500 60-51-5 Dimethoate 10 500/10,000 2524-03-0 Dimethyl Phosphorochloridothioate 500 500 77-78-1 Dimethyl sulfate 100 500 75-78-5 Dimethyldichlorosilane d 500 500 57-14-7 Dimethylhydrazine 10 1,000 99-98-9 Dimethyl-p-Phenylenediamine 10 10/10,000 644-64-4 Dimetilan 1 500/10,000 534-52-1 Dinitrocresol 10 10/10,000 88-85-7 Dinoseb 1,000 100/10,000 1420-07-1 Dinoterb 500 500/10,000 78-34-2 Dioxathion 500 500 82-66-6 Diphacinone 10 10/10,000 152-16-9 Diphosphoramide, Octamethyl- 100 100 298-04-4 Disulfoton 1 500 514-73-8 Dithiazanine Iodide 500 500/10,000 541-53-7 Dithiobiuret 100 100/10,000 316-42-7 Emetine, Dihydrochloride d 1 1/10,000 115-29-7 Endosulfan 1 10/10,000 2778-04-3 Endothion 500 500/10,000 72-20-8 Endrin 1 500/10,000 106-89-8 Epichlorohydrin f 100 1,000 2104-64-5 EPN 100 100/10,000 50-14-6 Ergocalciferol b 1,000 1,000/10,000 379-79-3 Ergotamine Tartrate 500 500/10,000 1622-32-8 Ethanesulfonyl Chloride, 2-Chloro- 500 500 10140-87-1 Ethanol, 1,2-Dichloro-, Acetate 1,000 1,000 563-12-2 Ethion 10 1,000 13194-48-4 Ethoprophos 1,000 1,000 538-07-8 Ethylbis(2-Chloroethyl)Amine d 500 500 371-62-0 Ethylene Fluorohydrin b, d 10 10 75-21-8 Ethylene Oxide f 10 1,000 107-15-3 Ethylenediamine 5,000 10,000 151-56-4 Ethyleneimine 1 500 542-90-5 Ethylthiocyanate 10,000 10,000 22224-92-6 Fenamiphos 10 10/10,000 115-90-2 Fensulfothion d 500 500 4301-50-2 Fluenetil 100 100/10,000 7782-41-4 Fluorine e 10 500 640-19-7 Fluoroacetamide 100 100/10,000 144-49-0 Fluoroacetic Acid 10 10/10,000 359-06-8 Fluoroacetyl Chloride b 10 10 51-21-8 Fluorouracil 500 500/10,000 944-22-9 Fonofos 500 500 50-00-0 Formaldehyde f 100 500 107-16-4 Formaldehyde Cyanohydrin d 1,000 1,000 23422-53-9 Formetanate Hydrochloride d 100 500/10,000 2540-82-1 Formothion 100 100 17702-57-7 Formparanate 100 100/10,000 21548-32-3 Fosthietan 500 500 3878-19-1 Fuberidazole 100 100/10,000 110-00-9 Furan 100 500 13450-90-3 Gallium Trichloride 500 500/10,000 77-47-4 Hexachlorocyclopentadiene d 10 100 4835-11-4 Hexamethylenediamine, N,N′-Dibutyl- 500 500 302-01-2 Hydrazine 1 1,000 74-90-8 Hydrocyanic Acid 10 100 7647-01-0 Hydrogen Chloride (gas only) f 5,000 500 7664-39-3 Hydrogen Fluoride 100 100 7722-84-1 Hydrogen Peroxide (Conc >52%) f 1,000 1,000 7783-07-5 Hydrogen Selenide 10 10 7783-06-4 Hydrogen Sulfide f 100 500 123-31-9 Hydroquinone f 100 500/10,000 13463-40-6 Iron, Pentacarbonyl- 100 100 297-78-9 Isobenzan 100 100/10,000 78-82-0 Isobutyronitrile d 1,000 1,000 102-36-3 Isocyanic Acid, 3,4-Dichlorophenyl Ester 500 500/10,000 465-73-6 Isodrin 1 100/10,000 55-91-4 Isofluorphate b 100 100 4098-71-9 Isophorone Diisocyanate g 500 500 108-23-6 Isopropyl Chloroformate 1,000 1,000 119-38-0 Isopropylmethyl-pyrazolyl Dimethylcarbamate 100 500 78-97-7 Lactonitrile 1,000 1,000 21609-90-5 Leptophos 500 500/10,000 541-25-3 Lewisite b, d 10 10 58-89-9 Lindane 1 1,000/10,000 7580-67-8 Lithium Hydride a 100 100 109-77-3 Malononitrile 1,000 500/10,000 12108-13-3 Manganese, Tricarbonyl Methylcyclopentadienyl d 100 100 51-75-2 Mechlorethamine b 10 10 950-10-7 Mephosfolan 500 500 1600-27-7 Mercuric Acetate 500 500/10,000 7487-94-7 Mercuric Chloride 500 500/10,000 21908-53-2 Mercuric Oxide 500 500/10,000 10476-95-6 Methacrolein Diacetate 1,000 1,000 760-93-0 Methacrylic Anhydride 500 500 126-98-7 Methacrylonitrile d 1,000 500 920-46-7 Methacryloyl Chloride 100 100 30674-80-7 Methacryloyloxyethyl Isocyanate d 100 100 10265-92-6 Methamidophos 100 100/10,000 558-25-8 Methanesulfonyl Fluoride 1,000 1,000 950-37-8 Methidathion 500 500/10,000 2032-65-7 Methiocarb 10 500/10,000 16752-77-5 Methomyl d 100 500/10,000 151-38-2 Methoxyethylmercuric Acetate 500 500/10,000 80-63-7 Methyl 2-Chloroacrylate 500 500 74-83-9 Methyl Bromide f 1,000 1,000 79-22-1 Methyl Chloroformate d 1,000 500 60-34-4 Methyl Hydrazine 10 500 624-83-9 Methyl Isocyanate 10 500 556-61-6 Methyl Isothiocyanate a 500 500 74-93-1 Methyl Mercaptan f 100 500 3735-23-7 Methyl Phenkapton 500 500 676-97-1 Methyl Phosphonic Dichloride a 100 100 556-64-9 Methyl Thiocyanate 10,000 10,000 78-94-4 Methyl Vinyl Ketone 10 10 502-39-6 Methylmercuric Dicyanamide 500 500/10,000 75-79-6 Methyltrichlorosilane d 500 500 1129-41-5 Metolcarb 1,000 100/10,000 7786-34-7 Mevinphos 10 500 315-18-4 Mexacarbate d 1,000 500/10,000 50-07-7 Mitomycin C 10 500/10,000 6923-22-4 Monocrotophos 10 10/10,000 2763-96-4 Muscimol 1,000 500/10,000 505-60-2 Mustard Gas d 500 500 13463-39-3 Nickel Carbonyl 10 1 54-11-5 Nicotine b 100 100 65-30-5 Nicotine Sulfate 100 100/10,000 7697-37-2 Nitric Acid 1,000 1,000 10102-43-9 Nitric Oxide b 10 100 98-95-3 Nitrobenzene f 1,000 10,000 1122-60-7 Nitrocyclohexane 500 500 10102-44-0 Nitrogen Dioxide 10 100 62-75-9 Nitrosodimethylamine d 10 1,000 991-42-4 Norbormide 100 100/10,000 Organorhodium Complex (PMN-82-147) 10 10/10,000 630-60-4 Ouabain b 100 100/10,000 23135-22-0 Oxamyl 100 100/10,000 78-71-7 Oxetane, 3,3-Bis(Chloromethyl)- 500 500 2497-07-6 Oxydisulfoton d 500 500 10028-15-6 Ozone 100 100 1910-42-5 Paraquat Dichloride 10 10/10,000 2074-50-2 Paraquat Methosulfate 10 10/10,000 56-38-2 Parathion b 10 100 298-00-0 Parathion-Methyl b 100 100/10,000 12002-03-8 Paris Green 1 500/10,000 19624-22-7 Pentaborane 500 500 2570-26-5 Pentadecylamine 100 100/10,000 79-21-0 Peracetic Acid 500 500 594-42-3 Perchloromethylmercaptan 100 500 108-95-2 Phenol 1,000 500/10,000 4418-66-0 Phenol, 2,2′-Thiobis(4-Chloro-6-Methyl)- 100 100/10,000 64-00-6 Phenol, 3-(1-Methylethyl)-, Methylcarbamate 10 500/10,000 58-36-6 Phenoxarsine, 10,10′-Oxydi- 500 500/10,000 696-28-6 Phenyl Dichloroarsine d 1 500 59-88-1 Phenylhydrazine Hydrochloride 1,000 1,000/10,000 62-38-4 Phenylmercury Acetate 100 500/10,000 2097-19-0 Phenylsilatrane d 100 100/10,000 103-85-5 Phenylthiourea 100 100/10,000 298-02-2 Phorate 10 10 4104-14-7 Phosacetim 100 100/10,000 947-02-4 Phosfolan 100 100/10,000 75-44-5 Phosgene f 10 10 13171-21-6 Phosphamidon 100 100 7803-51-2 Phosphine 100 500 2703-13-1 Phosphonothioic Acid, Methyl-, O-Ethyl O-(4-(Methylthio) Phenyl) Ester 500 500 50782-69-9 Phosphonothioic Acid, Methyl-, S-(2-(Bis(1Methylethyl)Amino)Ethyl) O-Ethyl Ester 100 100 2665-30-7 Phosphonothioic Acid, Methyl-, O-(4-Nitrophenyl) O-Phenyl Ester 500 500 3254-63-5 Phosphoric Acid, Dimethyl 4-(Methylthio)Phenyl Ester 500 500 2587-90-8 Phosphorothioic Acid, O,O-Dimethyl-S-(2-Methylthio) Ethyl Ester b, c 500 500 7723-14-0 Phosphorus a, d 1 100 10025-87-3 Phosphorus Oxychloride 1,000 500 10026-13-8 Phosphorus Pentachloride a 500 500 7719-12-2 Phosphorus Trichloride 1,000 1,000 57-47-6 Physostigmine 100 100/10,000 57-64-7 Physostigmine, Salicylate (1:1) 100 100/10,000 124-87-8 Picrotoxin 500 500/10,000 110-89-4 Piperidine 1,000 1,000 23505-41-1 Pirimifos-Ethyl 1,000 1,000 10124-50-2 Potassium Arsenite 1 500/10,000 151-50-8 Potassium Cyanide a 10 100 506-61-6 Potassium Silver Cyanide a 1 500 2631-37-0 Promecarb d 1,000 500/10,000 106-96-7 Propargyl Bromide 10 10 57-57-8 Propiolactone, Beta- 10 500 107-12-0 Propionitrile 10 500 542-76-7 Propionitrile, 3-Chloro- 1,000 1,000 70-69-9 Propiophenone, 4-Amino- c 100 100/10,000 109-61-5 Propyl Chloroformate 500 500 75-56-9 Propylene Oxide f 100 10,000 75-55-8 Propyleneimine 1 10,000 2275-18-5 Prothoate 100 100/10,000 129-00-0 Pyrene b 5,000 1,000/10,000 140-76-1 Pyridine, 2-Methyl-5-Vinyl- 500 500 504-24-5 Pyridine, 4-Amino- d 1,000 500/10,000 1124-33-0 Pyridine, 4-Nitro-,l-Oxide 500 500/10,000 53558-25-1 Pyriminil d 100 100/10,000 14167-18-1 Salcomine 500 500/10,000 107-44-8 Sarin d 10 10 7783-00-8 Selenious Acid 10 1,000/10,000 7791-23-3 Selenium Oxychloride 500 500 563-41-7 Semicarbazide Hydrochloride 1,000 1,000/10,000 3037-72-7 Silane, (4-Aminobutyl)Diethoxymethyl- 1,000 1,000 7631-89-2 Sodium Arsenate 1 1,000/10,000 7784-46-5 Sodium Arsenite 1 500/10,000 26628-22-8 Sodium Azide (Na(N3)) a 1,000 500 124-65-2 Sodium Cacodylate 100 100/10,000 143-33-9 Sodium Cyanide (Na(CN)) a 10 100 62-74-8 Sodium Fluoroacetate 10 10/10,000 13410-01-0 Sodium Selenate 100 100/10,000 10102-18-8 Sodium Selenite d 100 100/10,000 10102-20-2 Sodium Tellurite 500 500/10,000 900-95-8 Stannane, Acetoxytriphenyl- c 500 500/10,000 57-24-9 Strychnine b 10 100/10,000 60-41-3 Strychnine Sulfate 10 100/10,000 3689-24-5 Sulfotep 100 500 3569-57-1 Sulfoxide, 3-Chloropropyl Octyl 500 500 7446-09-5 Sulfur Dioxide f 500 500 7783-60-0 Sulfur Tetrafluoride 100 100 7446-11-9 Sulfur Trioxide a 100 100 7664-93-9 Sulfuric Acid 1,000 1,000 77-81-6 Tabun b, d 10 10 7783-80-4 Tellurium Hexafluoride e 100 100 107-49-3 TEPP 10 100 13071-79-9 Terbufos d 100 100 78-00-2 Tetraethyllead b 10 100 597-64-8 Tetraethyltin b 100 100 75-74-1 Tetramethyllead b, f 100 100 509-14-8 Tetranitromethane 10 500 10031-59-1 Thallium Sulfate d 100 100/10,000 6533-73-9 Thallous Carbonate b, d 100 100/10,000 7791-12-0 Thallous Chloride b, d 100 100/10,000 2757-18-8 Thallous Malonate b, d 100 100/10,000 7446-18-6 Thallous Sulfate 100 100/10,000 2231-57-4 Thiocarbazide 1,000 1,000/10,000 39196-18-4 Thiofanox 100 100/10,000 297-97-2 Thionazin 100 500 108-98-5 Thiophenol 100 500 79-19-6 Thiosemicarbazide 100 100/10,000 5344-82-1 Thiourea, (2-Chlorophenyl)- 100 100/10,000 614-78-8 Thiourea, (2-Methylphenyl)- 500 500/10,000 7550-45-0 Titanium Tetrachloride 1,000 100 584-84-9 Toluene 2,4-Diisocyanate 100 500 91-08-7 Toluene 2,6-Diisocyanate 100 100 110-57-6 Trans-1,4-Dichlorobutene 500 500 1031-47-6 Triamiphos 500 500/10,000 24017-47-8 Triazofos 500 500 76-02-8 Trichloroacetyl Chloride 500 500 115-21-9 Trichloroethylsilane d 500 500 327-98-0 Trichloronate e 500 500 98-13-5 Trichlorophenylsilane d 500 500 1558-25-4 Trichloro(Chloromethyl)Silane 100 100 27137-85-5 Trichloro(Dichlorophenyl) Silane 500 500 998-30-1 Triethoxysilane 500 500 75-77-4 Trimethylchlorosilane 1,000 1,000 824-11-3 Trimethylolpropane Phosphite d 100 100/10,000 1066-45-1 Trimethyltin Chloride 500 500/10,000 639-58-7 Triphenyltin Chloride 500 500/10,000 555-77-1 Tris(2-Chloroethyl)Amine d 100 100 2001-95-8 Valinomycin b 1,000 1,000/10,000 1314-62-1 Vanadium Pentoxide 1,000 100/10,000 108-05-4 Vinyl Acetate Monomer f 5,000 1,000 81-81-2 Warfarin 100 500/10,000 129-06-6 Warfarin Sodium d 100 100/10,000 28347-13-9 Xylylene Dichloride 100 100/10,000 58270-08-9 Zinc, Dichloro(4,4-Dimethyl-5((((Methylamino)Carbonyl) Oxy)Imino)Pentanenitrile)-, (T-4)- 100 100/10,000 1314-84-7 Zinc Phosphide a 100 500