40 CFR Appendix B
The List of Extremely Hazardous Substances and Their Threshold Planning Quantities
June 9, 2020
[CAS Number Order]
Open Table
| CAS No. | Chemical name | Notes | Reportable quantity* (pounds) |
Threshold planning quantity (pounds) |
|---|---|---|---|---|
| 0 | Organorhodium Complex (PMN-82-147) | 10 | 10/10,000 | |
| 50-00-0 | Formaldehyde | f | 100 | 500 |
| 50-07-7 | Mitomycin C | 10 | 500/10,000 | |
| 50-14-6 | Ergocalciferol | b | 1,000 | 1,000/10,000 |
| 51-21-8 | Fluorouracil | 500 | 500/10,000 | |
| 51-75-2 | Mechlorethamine | b | 10 | 10 |
| 51-83-2 | Carbachol Chloride | 500 | 500/10,000 | |
| 54-11-5 | Nicotine | b | 100 | 100 |
| 54-62-6 | Aminopterin | 500 | 500/10,000 | |
| 55-91-4 | Isofluorphate | b | 100 | 100 |
| 56-25-7 | Cantharidin | 100 | 100/10,000 | |
| 56-38-2 | Parathion | b | 10 | 100 |
| 56-72-4 | Coumaphos | 10 | 100/10,000 | |
| 57-14-7 | Dimethylhydrazine | 10 | 1,000 | |
| 57-24-9 | Strychnine | b | 10 | 100/10,000 |
| 57-47-6 | Physostigmine | 100 | 100/10,000 | |
| 57-57-8 | Propiolactone, Beta- | 10 | 500 | |
| 57-64-7 | Physostigmine, Salicylate (1:1) | 100 | 100/10,000 | |
| 57-74-9 | Chlordane | 1 | 1,000 | |
| 58-36-6 | Phenoxarsine, 10,10′-Oxydi- | 500 | 500/10,000 | |
| 58-89-9 | Lindane | 1 | 1,000/10,000 | |
| 59-88-1 | Phenylhydrazine Hydrochloride | 1,000 | 1,000/10,000 | |
| 60-34-4 | Methyl Hydrazine | 10 | 500 | |
| 60-41-3 | Strychnine sulfate | 10 | 100/10,000 | |
| 60-51-5 | Dimethoate | 10 | 500/10,000 | |
| 62-38-4 | Phenylmercury Acetate | 100 | 500/10,000 | |
| 62-53-3 | Aniline | f | 5,000 | 1,000 |
| 62-73-7 | Dichlorvos | 10 | 1,000 | |
| 62-74-8 | Sodium Fluoroacetate | 10 | 10/10,000 | |
| 62-75-9 | Nitrosodimethylamine | d | 10 | 1,000 |
| 64-00-6 | Phenol, 3-(1-Methylethyl)-, Methylcarbamate | 10 | 500/10,000 | |
| 64-86-8 | Colchicine | d | 10 | 10/10,000 |
| 65-30-5 | Nicotine sulfate | 100 | 100/10,000 | |
| 66-81-9 | Cycloheximide | 100 | 100/10,000 | |
| 67-66-3 | Chloroform | f | 10 | 10,000 |
| 70-69-9 | Propiophenone, 4-Amino- | c | 100 | 100/10,000 |
| 71-63-6 | Digitoxin | b | 100 | 100/10,000 |
| 72-20-8 | Endrin | 1 | 500/10,000 | |
| 74-83-9 | Methyl Bromide | f | 1,000 | 1,000 |
| 74-90-8 | Hydrocyanic Acid | 10 | 100 | |
| 74-93-1 | Methyl Mercaptan | f | 100 | 500 |
| 75-15-0 | Carbon Disulfide | f | 100 | 10,000 |
| 75-21-8 | Ethylene Oxide | f | 10 | 1,000 |
| 75-44-5 | Phosgene | f | 10 | 10 |
| 75-55-8 | Propyleneimine | 1 | 10,000 | |
| 75-56-9 | Propylene Oxide | f | 100 | 10,000 |
| 75-74-1 | Tetramethyllead | b, f | 100 | 100 |
| 75-77-4 | Trimethylchlorosilane | 1,000 | 1,000 | |
| 75-78-5 | Dimethyldichlorosilane | d | 500 | 500 |
| 75-79-6 | Methyltrichlorosilane | d | 500 | 500 |
| 75-86-5 | Acetone Cyanohydrin | 10 | 1,000 | |
| 76-02-8 | Trichloroacetyl Chloride | 500 | 500 | |
| 77-47-4 | Hexachlorocyclopentadiene | d | 10 | 100 |
| 77-78-1 | Dimethyl Sulfate | 100 | 500 | |
| 77-81-6 | Tabun | b, d | 10 | 10 |
| 78-00-2 | Tetraethyllead | b | 10 | 100 |
| 78-34-2 | Dioxathion | 500 | 500 | |
| 78-53-5 | Amiton | 500 | 500 | |
| 78-71-7 | Oxetane, 3,3-Bis(Chloromethyl)- | 500 | 500 | |
| 78-82-0 | Isobutyronitrile | d | 1,000 | 1,000 |
| 78-94-4 | Methyl Vinyl Ketone | 10 | 10 | |
| 78-97-7 | Lactonitrile | 1,000 | 1,000 | |
| 79-06-1 | Acrylamide | f | 5,000 | 1,000/10,000 |
| 79-11-8 | Chloroacetic Acid | 100 | 100/10,000 | |
| 79-19-6 | Thiosemicarbazide | 100 | 100/10,000 | |
| 79-21-0 | Peracetic Acid | 500 | 500 | |
| 79-22-1 | Methyl Chloroformate | d | 1,000 | 500 |
| 80-63-7 | Methyl 2-Chloroacrylate | 500 | 500 | |
| 81-81-2 | Warfarin | 100 | 500/10,000 | |
| 82-66-6 | Diphacinone | 10 | 10/10,000 | |
| 86-50-0 | Azinphos-Methyl | 1 | 10/10,000 | |
| 86-88-4 | ANTU | 100 | 500/10,000 | |
| 88-05-1 | Aniline, 2,4,6-Trimethyl- | 500 | 500 | |
| 88-85-7 | Dinoseb | 1,000 | 100/10,000 | |
| 91-08-7 | Toluene 2,6-Diisocyanate | 100 | 100 | |
| 95-48-7 | Cresol, o- | 100 | 1,000/10,000 | |
| 98-05-5 | Benzenearsonic Acid | 10 | 10/10,000 | |
| 98-07-7 | Benzotrichloride | 10 | 100 | |
| 98-13-5 | Trichlorophenylsilane | d | 500 | 500 |
| 98-16-8 | Benzenamine, 3-(Trifluoromethyl)- | 500 | 500 | |
| 98-87-3 | Benzal Chloride | 5,000 | 500 | |
| 98-95-3 | Nitrobenzene | f | 1,000 | 10,000 |
| 99-98-9 | Dimethyl-p-Phenylenediamine | 10 | 10/10,000 | |
| 100-14-1 | Benzene, 1-(Chloromethyl)-4-Nitro- | 500 | 500/10,000 | |
| 100-44-7 | Benzyl Chloride | 100 | 500 | |
| 102-36-3 | Isocyanic Acid, 3,4-Dichlorophenyl Ester | 500 | 500/10,000 | |
| 103-85-5 | Phenylthiourea | 100 | 100/10,000 | |
| 106-89-8 | Epichlorohydrin | f | 100 | 1,000 |
| 106-96-7 | Propargyl Bromide | 10 | 10 | |
| 107-02-8 | Acrolein | 1 | 500 | |
| 107-07-3 | Chloroethanol | 500 | 500 | |
| 107-11-9 | Allylamine | 500 | 500 | |
| 107-12-0 | Propionitrile | 10 | 500 | |
| 107-13-1 | Acrylonitrile | f | 100 | 10,000 |
| 107-15-3 | Ethylenediamine | 5,000 | 10,000 | |
| 107-16-4 | Formaldehyde Cyanohydrin | d | 1,000 | 1,000 |
| 107-18-6 | Allyl Alcohol | 100 | 1,000 | |
| 107-30-2 | Chloromethyl Methyl Ether | b | 10 | 100 |
| 107-44-8 | Sarin | d | 10 | 10 |
| 107-49-3 | TEPP | 10 | 100 | |
| 108-05-4 | Vinyl Acetate Monomer | f | 5,000 | 1,000 |
| 108-23-6 | Isopropyl Chloroformate | 1,000 | 1,000 | |
| 108-91-8 | Cyclohexylamine | f | 10,000 | 10,000 |
| 108-95-2 | Phenol | 1,000 | 500/10,000 | |
| 108-98-5 | Thiophenol | 100 | 500 | |
| 109-61-5 | Propyl Chloroformate | 500 | 500 | |
| 109-77-3 | Malononitrile | 1,000 | 500/10,000 | |
| 110-00-9 | Furan | 100 | 500 | |
| 110-57-6 | Trans-1,4-Dichlorobutene | 500 | 500 | |
| 110-89-4 | Piperidine | 1,000 | 1,000 | |
| 111-44-4 | Dichloroethyl Ether | 10 | 10,000 | |
| 111-69-3 | Adiponitrile | f | 1,000 | 1,000 |
| 115-21-9 | Trichloroethylsilane | d | 500 | 500 |
| 115-26-4 | Dimefox | 500 | 500 | |
| 115-29-7 | Endosulfan | 1 | 10/10,000 | |
| 115-90-2 | Fensulfothion | d | 500 | 500 |
| 116-06-3 | Aldicarb | b | 1 | 100/10,000 |
| 119-38-0 | Isopropylmethyl-pyrazolyl Dimethylcarbamate | 100 | 500 | |
| 123-31-9 | Hydroquinone | f | 100 | 500/10,000 |
| 123-73-9 | Crotonaldehyde, (E)- | 100 | 1,000 | |
| 124-65-2 | Sodium Cacodylate | 100 | 100/10,000 | |
| 124-87-8 | Picrotoxin | 500 | 500/10,000 | |
| 126-98-7 | Methacrylonitrile | d | 1,000 | 500 |
| 129-00-0 | Pyrene | b | 5,000 | 1,000/10,000 |
| 129-06-6 | Warfarin Sodium | d | 100 | 100/10,000 |
| 140-29-4 | Benzyl Cyanide | d | 500 | 500 |
| 140-76-1 | Pyridine, 2-Methyl-5-Vinyl- | 500 | 500 | |
| 141-66-2 | Dicrotophos | 100 | 100 | |
| 143-33-9 | Sodium Cyanide (Na(CN)) | a | 10 | 100 |
| 144-49-0 | Fluoroacetic Acid | 10 | 10/10,000 | |
| 149-74-6 | Dichloromethylphenylsilane | 1,000 | 1,000 | |
| 151-38-2 | Methoxyethylmercuric Acetate | 500 | 500/10,000 | |
| 151-50-8 | Potassium Cyanide | a | 10 | 100 |
| 151-56-4 | Ethyleneimine | 1 | 500 | |
| 152-16-9 | Diphosphoramide, Octamethyl- | 100 | 100 | |
| 297-78-9 | Isobenzan | 100 | 100/10,000 | |
| 297-97-2 | Thionazin | 100 | 500 | |
| 298-00-0 | Parathion-Methyl | b | 100 | 100/10,000 |
| 298-02-2 | Phorate | 10 | 10 | |
| 298-04-4 | Disulfoton | 1 | 500 | |
| 300-62-9 | Amphetamine | 1,000 | 1,000 | |
| 302-01-2 | Hydrazine | 1 | 1,000 | |
| 309-00-2 | Aldrin | 1 | 500/10,000 | |
| 315-18-4 | Mexacarbate | 1,000 | 500/10,000 | |
| 316-42-7 | Emetine, Dihydrochloride | d | 1 | 1/10,000 |
| 327-98-0 | Trichloronate | e | 500 | 500 |
| 353-42-4 | Boron Trifluoride Compound With Methyl Ether (1:1) | 1,000 | 1,000 | |
| 359-06-8 | Fluoroacetyl Chloride | b | 10 | 10 |
| 371-62-0 | Ethylene Fluorohydrin | b, d | 10 | 10 |
| 379-79-3 | Ergotamine Tartrate | 500 | 500/10,000 | |
| 465-73-6 | Isodrin | 1 | 100/10,000 | |
| 470-90-6 | Chlorfenvinfos | 500 | 500 | |
| 502-39-6 | Methylmercuric Dicyanamide | 500 | 500/10,000 | |
| 504-24-5 | Pyridine, 4-Amino- | d | 1,000 | 500/10,000 |
| 505-60-2 | Mustard Gas | d | 500 | 500 |
| 506-61-6 | Potassium Silver Cyanide | a | 1 | 500 |
| 506-68-3 | Cyanogen Bromide | 1,000 | 500/10,000 | |
| 506-78-5 | Cyanogen Iodide | 1,000 | 1,000/10,000 | |
| 509-14-8 | Tetranitromethane | 10 | 500 | |
| 514-73-8 | Dithiazanine Iodide | 500 | 500/10,000 | |
| 534-07-6 | Bis(Chloromethyl) Ketone | 10 | 10/10,000 | |
| 534-52-1 | Dinitrocresol | 10 | 10/10,000 | |
| 535-89-7 | Crimidine | 100 | 100/10,000 | |
| 538-07-8 | Ethylbis(2-Chloroethyl)Amine | d | 500 | 500 |
| 541-25-3 | Lewisite | b, d | 10 | 10 |
| 541-53-7 | Dithiobiuret | 100 | 100/10,000 | |
| 542-76-7 | Propionitrile, 3-Chloro- | 1,000 | 1,000 | |
| 542-88-1 | Chloromethyl Ether | d | 10 | 100 |
| 542-90-5 | Ethylthiocyanate | 10,000 | 10,000 | |
| 555-77-1 | Tris(2-Chloroethyl)Amine | d | 100 | 100 |
| 556-61-6 | Methyl Isothiocyanate | a | 500 | 500 |
| 556-64-9 | Methyl Thiocyanate | 10,000 | 10,000 | |
| 558-25-8 | Methanesulfonyl Fluoride | 1,000 | 1,000 | |
| 563-12-2 | Ethion | 10 | 1,000 | |
| 563-41-7 | Semicarbazide Hydrochloride | 1,000 | 1,000/10,000 | |
| 584-84-9 | Toluene 2,4-Diisocyanate | 100 | 500 | |
| 594-42-3 | Perchloromethylmercaptan | 100 | 500 | |
| 597-64-8 | Tetraethyltin | b | 100 | 100 |
| 614-78-8 | Thiourea, (2-Methylphenyl)- | 500 | 500/10,000 | |
| 624-83-9 | Methyl Isocyanate | 10 | 500 | |
| 627-11-2 | Chloroethyl Chloroformate | 1,000 | 1,000 | |
| 630-60-4 | Ouabain | b | 100 | 100/10,000 |
| 639-58-7 | Triphenyltin Chloride | 500 | 500/10,000 | |
| 640-19-7 | Fluoroacetamide | 100 | 100/10,000 | |
| 644-64-4 | Dimetilan | 1 | 500/10,000 | |
| 675-14-9 | Cyanuric Fluoride | 100 | 100 | |
| 676-97-1 | Methyl Phosphonic Dichloride | a | 100 | 100 |
| 696-28-6 | Phenyl Dichloroarsine | d | 1 | 500 |
| 760-93-0 | Methacrylic Anhydride | 500 | 500 | |
| 786-19-6 | Carbophenothion | 500 | 500 | |
| 814-49-3 | Diethyl Chlorophosphate | d | 500 | 500 |
| 814-68-6 | Acrylyl Chloride | d | 100 | 100 |
| 824-11-3 | Trimethylolpropane Phosphite | d | 100 | 100/10,000 |
| 900-95-8 | Stannane, Acetoxytriphenyl- | c | 500 | 500/10,000 |
| 919-86-8 | Demeton-S-Methyl | 500 | 500 | |
| 920-46-7 | Methacryloyl Chloride | 100 | 100 | |
| 944-22-9 | Fonofos | 500 | 500 | |
| 947-02-4 | Phosfolan | 100 | 100/10,000 | |
| 950-10-7 | Mephosfolan | 500 | 500 | |
| 950-37-8 | Methidathion | 500 | 500/10,000 | |
| 991-42-4 | Norbormide | 100 | 100/10,000 | |
| 998-30-1 | Triethoxysilane | 500 | 500 | |
| 999-81-5 | Chlormequat Chloride | d | 100 | 100/10,000 |
| 1031-47-6 | Triamiphos | 500 | 500/10,000 | |
| 1066-45-1 | Trimethyltin Chloride | 500 | 500/10,000 | |
| 1122-60-7 | Nitrocyclohexane | 500 | 500 | |
| 1124-33-0 | Pyridine, 4-Nitro-,1-Oxide | 500 | 500/10,000 | |
| 1129-41-5 | Metolcarb | 1,000 | 100/10,000 | |
| 1303-28-2 | Arsenic Pentoxide | 1 | 100/10,000 | |
| 1306-19-0 | Cadmium Oxide | 100 | 100/10,000 | |
| 1314-62-1 | Vanadium Pentoxide | 1,000 | 100/10,000 | |
| 1314-84-7 | Zinc Phosphide | a | 100 | 500 |
| 1327-53-3 | Arsenous Oxide | d | 1 | 100/10,000 |
| 1397-94-0 | Antimycin A | b | 1,000 | 1,000/10,000 |
| 1420-07-1 | Dinoterb | 500 | 500/10,000 | |
| 1464-53-5 | Diepoxybutane | 10 | 500 | |
| 1558-25-4 | Trichloro(Chloromethyl)Silane | 100 | 100 | |
| 1563-66-2 | Carbofuran | 10 | 10/10,000 | |
| 1600-27-7 | Mercuric Acetate | 500 | 500/10,000 | |
| 1622-32-8 | Ethanesulfonyl Chloride, 2-Chloro- | 500 | 500 | |
| 1752-30-3 | Acetone Thiosemicarbazide | 1,000 | 1,000/10,000 | |
| 1910-42-5 | Paraquat Dichloride | 10 | 10/10,000 | |
| 1982-47-4 | Chloroxuron | 500 | 500/10,000 | |
| 2001-95-8 | Valinomycin | b | 1,000 | 1,000/10,000 |
| 2032-65-7 | Methiocarb | 10 | 500/10,000 | |
| 2074-50-2 | Paraquat Methosulfate | 10 | 10/10,000 | |
| 2097-19-0 | Phenylsilatrane | d | 100 | 100/10,000 |
| 2104-64-5 | EPN | 100 | 100/10,000 | |
| 2223-93-0 | Cadmium Stearate | b | 1,000 | 1,000/10,000 |
| 2231-57-4 | Thiocarbazide | 1,000 | 1,000/10,000 | |
| 2238-07-5 | Diglycidyl Ether | 1,000 | 1,000 | |
| 2275-18-5 | Prothoate | 100 | 100/10,000 | |
| 2497-07-6 | Oxydisulfoton | d | 500 | 500 |
| 2524-03-0 | Dimethyl Phosphorochloridothioate | 500 | 500 | |
| 2540-82-1 | Formothion | 100 | 100 | |
| 2570-26-5 | Pentadecylamine | 100 | 100/10,000 | |
| 2587-90-8 | Phosphorothioic Acid, O,O-Dimethyl-S-(2-Methylthio) Ethyl Ester | b, c | 500 | 500 |
| 2631-37-0 | Promecarb | d | 1,000 | 500/10,000 |
| 2636-26-2 | Cyanophos | 1,000 | 1,000 | |
| 2642-71-9 | Azinphos-Ethyl | 100 | 100/10,000 | |
| 2665-30-7 | Phosphonothioic Acid, Methyl-, O-(4-Nitrophenyl) O-Phenyl Ester | 500 | 500 | |
| 2703-13-1 | Phosphonothioic Acid, Methyl-, O-Ethyl O-(4-(Methylthio)Phenyl) Ester | 500 | 500 | |
| 2757-18-8 | Thallous Malonate | b, d | 100 | 100/10,000 |
| 2763-96-4 | Muscimol | 1,000 | 500/10,000 | |
| 2778-04-3 | Endothion | 500 | 500/10,000 | |
| 3037-72-7 | Silane, (4-Aminobutyl)Diethoxymethyl- | 1,000 | 1,000 | |
| 3254-63-5 | Phosphoric Acid, Dimethyl 4-(Methylthio)Phenyl Ester | 500 | 500 | |
| 3569-57-1 | Sulfoxide, 3-Chloropropyl Octyl | 500 | 500 | |
| 3615-21-2 | Benzimidazole, 4,5-Dichloro-2-(Trifluoromethyl)- | c | 500 | 500/10,000 |
| 3689-24-5 | Sulfotep | 100 | 500 | |
| 3691-35-8 | Chlorophacinone | 100 | 100/10,000 | |
| 3734-97-2 | Amiton Oxalate | 100 | 100/10,000 | |
| 3735-23-7 | Methyl Phenkapton | 500 | 500 | |
| 3878-19-1 | Fuberidazole | 100 | 100/10,000 | |
| 4044-65-9 | Bitoscanate | 500 | 500/10,000 | |
| 4098-71-9 | Isophorone Diisocyanate | g | 500 | 500 |
| 4104-14-7 | Phosacetim | 100 | 100/10,000 | |
| 4170-30-3 | Crotonaldehyde | 100 | 1,000 | |
| 4301-50-2 | Fluenetil | 100 | 100/10,000 | |
| 4418-66-0 | Phenol, 2,2′-Thiobis(4-Chloro-6-Methyl)- | 100 | 100/10,000 | |
| 4835-11-4 | Hexamethylenediamine, N,N′-Dibutyl- | 500 | 500 | |
| 5344-82-1 | Thiourea, (2-Chlorophenyl)- | 100 | 100/10,000 | |
| 5836-29-3 | Coumatetralyl | 500 | 500/10,000 | |
| 6533-73-9 | Thallous Carbonate | b, d | 100 | 100/10,000 |
| 6923-22-4 | Monocrotophos | 10 | 10/10,000 | |
| 7446-09-5 | Sulfur Dioxide | f | 500 | 500 |
| 7446-11-9 | Sulfur Trioxide | a | 100 | 100 |
| 7446-18-6 | Thallous Sulfate | 100 | 100/10,000 | |
| 7487-94-7 | Mercuric Chloride | 500 | 500/10,000 | |
| 7550-45-0 | Titanium Tetrachloride | 1,000 | 100 | |
| 7580-67-8 | Lithium Hydride | a | 100 | 100 |
| 7631-89-2 | Sodium Arsenate | 1 | 1,000/10,000 | |
| 7637-07-2 | Boron Trifluoride | 500 | 500 | |
| 7647-01-0 | Hydrogen Chloride (gas only) | f | 5,000 | 500 |
| 7664-39-3 | Hydrogen Fluoride | 100 | 100 | |
| 7664-41-7 | Ammonia | f | 100 | 500 |
| 7664-93-9 | Sulfuric Acid | 1,000 | 1,000 | |
| 7697-37-2 | Nitric Acid | 1,000 | 1,000 | |
| 7719-12-2 | Phosphorus Trichloride | 1,000 | 1,000 | |
| 7722-84-1 | Hydrogen Peroxide (Conc >52%) | f | 1,000 | 1,000 |
| 7723-14-0 | Phosphorus | a, d | 1 | 100 |
| 7726-95-6 | Bromine | f | 500 | 500 |
| 7778-44-1 | Calcium Arsenate | 1 | 500/10,000 | |
| 7782-41-4 | Fluorine | e | 10 | 500 |
| 7782-50-5 | Chlorine | 10 | 100 | |
| 7783-00-8 | Selenious Acid | 10 | 1,000/10,000 | |
| 7783-06-4 | Hydrogen Sulfide | f | 100 | 500 |
| 7783-07-5 | Hydrogen Selenide | 10 | 10 | |
| 7783-60-0 | Sulfur Tetrafluoride | 100 | 100 | |
| 7783-70-2 | Antimony Pentafluoride | 500 | 500 | |
| 7783-80-4 | Tellurium Hexafluoride | e | 100 | 100 |
| 7784-34-1 | Arsenous Trichloride | 1 | 500 | |
| 7784-42-1 | Arsine | 100 | 100 | |
| 7784-46-5 | Sodium Arsenite | 1 | 500/10,000 | |
| 7786-34-7 | Mevinphos | 10 | 500 | |
| 7791-12-0 | Thallous Chloride | b, d | 100 | 100/10,000 |
| 7791-23-3 | Selenium Oxychloride | 500 | 500 | |
| 7803-51-2 | Phosphine | 100 | 500 | |
| 8001-35-2 | Camphechlor | 1 | 500/10,000 | |
| 8065-48-3 | Demeton | 500 | 500 | |
| 10025-73-7 | Chromic Chloride | 1 | 1/10,000 | |
| 10025-87-3 | Phosphorus Oxychloride | 1,000 | 500 | |
| 10026-13-8 | Phosphorus Pentachloride | a | 500 | 500 |
| 10028-15-6 | Ozone | 100 | 100 | |
| 10031-59-1 | Thallium Sulfate | d | 100 | 100/10,000 |
| 10102-18-8 | Sodium Selenite | d | 100 | 100/10,000 |
| 10102-20-2 | Sodium Tellurite | 500 | 500/10,000 | |
| 10102-43-9 | Nitric Oxide | b | 10 | 100 |
| 10102-44-0 | Nitrogen Dioxide | 10 | 100 | |
| 10124-50-2 | Potassium Arsenite | 1 | 500/10,000 | |
| 10140-87-1 | Ethanol, 1,2-Dichloro-, Acetate | 1,000 | 1,000 | |
| 10210-68-1 | Cobalt Carbonyl | d | 10 | 10/10,000 |
| 10265-92-6 | Methamidophos | 100 | 100/10,000 | |
| 10294-34-5 | Boron Trichloride | 500 | 500 | |
| 10311-84-9 | Dialifor | 100 | 100/10,000 | |
| 10476-95-6 | Methacrolein Diacetate | 1,000 | 1,000 | |
| 12002-03-8 | Paris Green | 1 | 500/10,000 | |
| 12108-13-3 | Manganese, Tricarbonyl Methylcyclopentadienyl | d | 100 | 100 |
| 13071-79-9 | Terbufosh | d | 100 | 100 |
| 13171-21-6 | Phosphamidon | 100 | 100 | |
| 13194-48-4 | Ethoprophos | 1,000 | 1,000 | |
| 13410-01-0 | Sodium Selenate | 100 | 100/10,000 | |
| 13450-90-3 | Gallium Trichloride | 500 | 500/10,000 | |
| 13463-39-3 | Nickel Carbonyl | 10 | 1 | |
| 13463-40-6 | Iron, Pentacarbonyl- | 100 | 100 | |
| 14167-18-1 | Salcomine | 500 | 500/10,000 | |
| 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 | |
| 16752-77-5 | Methomyl | d | 100 | 500/10,000 |
| 17702-41-9 | Decaborane(14) | 500 | 500/10,000 | |
| 17702-57-7 | Formparanate | 100 | 100/10,000 | |
| 19287-45-7 | Diborane | 100 | 100 | |
| 19624-22-7 | Pentaborane | 500 | 500 | |
| 20830-75-5 | Digoxin | d | 10 | 10/10,000 |
| 20859-73-8 | Aluminum Phosphide | a | 100 | 500 |
| 21548-32-3 | Fosthietan | 500 | 500 | |
| 21609-90-5 | Leptophos | 500 | 500/10,000 | |
| 21908-53-2 | Mercuric Oxide | 500 | 500/10,000 | |
| 21923-23-9 | Chlorthiophos | d | 500 | 500 |
| 22224-92-6 | Fenamiphos | 10 | 10/10,000 | |
| 23135-22-0 | Oxamyl | 100 | 100/10,000 | |
| 23422-53-9 | Formetanate Hydrochloride | d | 100 | 500/10,000 |
| 23505-41-1 | Pirimifos-Ethyl | 1,000 | 1,000 | |
| 24017-47-8 | Triazofos | 500 | 500 | |
| 24934-91-6 | Chlormephos | 500 | 500 | |
| 26419-73-8 | Carbamic Acid, Methyl-, O-(((2,4-Dimethyl-1, 3-Dithiolan-2-yl)Methylene)Amino)- | 100 | 100/10,000 | |
| 26628-22-8 | Sodium Azide (Na(N3)) | a | 1,000 | 500 |
| 27137-85-5 | Trichloro(Dichlorophenyl)Silane | 500 | 500 | |
| 28347-13-9 | Xylylene Dichloride | 100 | 100/10,000 | |
| 28772-56-7 | Bromadiolone | 100 | 100/10,000 | |
| 30674-80-7 | Methacryloyloxyethyl Isocyanateh | 100 | 100 | |
| 39196-18-4 | Thiofanox | 100 | 100/10,000 | |
| 50782-69-9 | Phosphonothioic Acid, Methyl-, S-(2-(Bis(1-Methylethyl)Amino)Ethyl) O-Ethyl Ester | 100 | 100 | |
| 53558-25-1 | Pyriminil | d | 100 | 100/10,000 |
| 58270-08-9 | Zinc, Dichloro(4,4-Dimethyl-5((((Methylamino) Carbonyl)Oxy)Imino)Pentanenitrile)-, (T-4)- | 100 | 100/10,000 | |
| 62207-76-5 | Cobalt, ((2,2′-(1,2-Ethanediylbis (Nitrilomethylidyne)) Bis(6-Fluorophenolato)) (2-)-N,N′,O,O′)- | 100 | 100/10,000 |
*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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