Cal. Code Regs. Tit. 19, div. 5, ch. 2, art. 9, tbl. 3
Current through Register 2024 Notice Reg. No. 52, December 27, 2024
| Chemical Name | Also on Table 1 1 | CAS Number | State Threshold quantity (lbs) |
| Acetone Cyanohydrin 2 | no | 75-86-5 | 1,000 |
| Acetone Thiosemicarbazide | no | 1752-30-3 | 1,000/10,000 3 |
| Acrolein | yes | 107-02-8 | 500 |
| Acrylamide | no | 79-06-1 | 1,000/10,000 3 |
| Acrylonitrile | yes | 107-13-1 | 10,000 |
| Acrylyl Chloride | yes | 814-68-6 | 100 |
| Aldicarb | no | 116-06-3 | 100/10,000 3 |
| Aldrin | no | 309-00-2 | 500/10,000 3 |
| Allyl Alcohol | yes | 107-18-6 | 1,000 |
| Allylamine | yes | 107-11-9 | 500 |
| Aluminum Phosphide 4 | no | 20859-73-8 | 500 |
| Aminopterin | no | 54-62-6 | 500/10,000 3 |
| Amiton Oxalate | no | 3734-97-2 | 100/10,000 3 |
| Ammonia 5 | yes | 7664-41-7 | 500 |
| Aniline 2 | no | 62-53-3 | 1,000 |
| Antimycin A | no | 1397-94-0 | 1,000/10,000 3 |
| ANTU | no | 86-88-4 | 500/10,000 3 |
| Arsenic Pentoxide | no | 1303-28-2 | 100/10,000 3 |
| Arsenous Oxide | no | 1327-53-3 | 100/10,000 3 |
| Arsenous Trichloride | yes | 7784-34-1 | 500 |
| Arsine | yes | 7784-42-1 | 100 |
| Azinphos-Ethyl | no | 2642-71-9 | 100/10,000 3 |
| Azinphos-Methyl | no | 86-50-0 | 10/10,000 3 |
| Benzene, 1-(Chloromethyl)-4-Nitro- | no | 100-14-1 | 500/10,000 3 |
| Benzenearsonic Acid | no | 98-05-5 | 10/10,000 3 |
| Benzimidazole, 4,5-Dichloro-2-(Trifluoromethyl)- | no | 3615-21-2 | 500/10,000 3 |
| Benzotrichloride 2 | no | 98-07-7 | 100 |
| Bicyclo[2.2.1] Heptane-2-Carbonitrile, 5-Chloro- 6-((((Methylamino) Carbonyl)Oxy)Imino)-, (1s-(1-alpha, 2-beta, 4-alpha, 5-alpha, 6E))-. | no | 15271-41-7 | 500/10,000 3 |
| Bis(Chloromethyl) Ketone | no | 534-07-6 | 10/10,000 3 |
| Bitoscanate | no | 4044-65-9 | 500/10,000 3 |
| Boron Trichloride | yes | 10294-34-5 | 500 |
| Boron Trifluoride | yes | 7637-07-2 | 500 |
| Boron Trifluoride Compound w/ Methyl Ether (1:1) | yes | 353-42-4 | 1,000 |
| Bromadiolone | no | 28772-56-7 | 100/10,000 3 |
| Bromine | yes | 7726-95-6 | 500 |
| Cadmium Oxide | no | 1306-19-0 | 100/10,000 3 |
| Cadmium Stearate | no | 2223-93-0 | 1,000/10,000 3 |
| Calcium Arsenate | no | 7778-44-1 | 500/10,000 3 |
| Camphechlor | no | 8001-35-2 | 500/10,000 3 |
| Cantharidin | no | 56-25-7 | 100/10,000 3 |
| Carbachol Chloride | no | 51-83-2 | 500/10,000 3 |
| Carbamic Acid, Methyl-,o-(((2,4-Dimethyl-1, 3-Dithiolan-2-yl)Methylene) Amino)-. | no | 26419-73-8 | 100/10,000 3 |
| Carbofuran | no | 1563-66-2 | 10/10,000 3 |
| Carbon Disulfide | yes | 75-15-0 | 10,000 |
| Chlorine | yes | 7782-50-5 | 100 |
| Chlormequat Chloride | no | 999-81-5 | 100/10,000 3 |
| Chloroacetic Acid | no | 79-11-8 | 100/10,000 3 |
| Chloroform | yes | 67-66-3 | 10,000 |
| Chloromethyl Ether | yes | 542-88-1 | 100 |
| Chloromethyl Methyl Ether | yes | 107-30-2 | 100 |
| Chlorophacinone | no | 3691-35-8 | 100/10,000 3 |
| Chloroxuron | no | 1982-47-4 | 500/10,000 3 |
| Chromic Chloride | no | 10025-73-7 | 1/10,000 3 |
| Cobalt Carbonyl | no | 10210-68-1 | 10/10,000 3 |
| Cobalt, ((2,2'-(1,2-Ethanediylbis (Nitrilomethylidyne)) Bis(6-Fluorophenolato))(2-)-N,N',O,O')-. | no | 62207-76-5 | 100/10,000 3 |
| Colchicine | no | 64-86-8 | 10/10,000 3 |
| Coumaphos | no | 56-72-4 | 100/10,000 3 |
| Coumatetralyl | no | 5836-29-3 | 500/10,000 3 |
| Cresol, o- | no | 95-48-7 | 1,000/10,000 3 |
| Crimidine | no | 535-89-7 | 100/10,000 3 |
| Crotonaldehyde | yes | 4170-30-3 | 1,000 |
| Crotonaldehyde, (E)- | yes | 123-73-9 | 1,000 |
| Cyanogen Bromide | no | 506-68-3 | 500/10,000 3 |
| Cyanogen Iodide | no | 506-78-5 | 1,000/10,000 3 |
| Cyanuric Fluoride | no | 675-14-9 | 100 |
| Cycloheximide | no | 66-81-9 | 100/10,000 3 |
| Cyclohexylamine | yes | 108-91-8 | 10,000 |
| Decaborane(14) | no | 17702-41-9 | 500/10,000 3 |
| Dialifor | no | 10311-84-9 | 100/10,000 3 |
| Diborane | yes | 19287-45-7 | 100 |
| Diepoxybutane 2 | no | 1464-53-5 | 500 |
| Digitoxin | no | 71-63-6 | 100/10,000 3 |
| Digoxin | no | 20830-75-5 | 10/10,000 3 |
| Dimethoate | no | 60-51-5 | 500/10,000 3 |
| Dimethyldichlorosilane | yes | 75-78-5 | 500 |
| Dimethylhydrazine | yes | 57-14-7 | 1,000 |
| Dimethyl-p-Phenylenediamine | no | 99-98-9 | 10/10,000 3 |
| Dimethyl Sulfate 2 | no | 77-78-1 | 500 |
| Dimetilan | no | 644-64-4 | 500/10,000 3 |
| Dinitrocresol | no | 534-52-1 | 10/10,000 3 |
| Dinoseb | no | 88-85-7 | 100/10,000 3 |
| Dinoterb | no | 1420-07-1 | 500/10,000 3 |
| Diphacinone | no | 82-66-6 | 10/10,000 3 |
| Disulfoton 2 | no | 298-04-4 | 500 |
| Dithiazanine Iodide | no | 514-73-8 | 500/10,000 3 |
| Dithiobiuret | no | 541-53-7 | 100/10,000 3 |
| Emetine, Dihydrochloride | no | 316-42-7 | 1/10,000 3 |
| Endosulfan | no | 115-29-7 | 10/10,000 3 |
| Endothion | no | 2778-04-3 | 500/10,000 3 |
| Endrin | no | 72-20-8 | 500/10,000 3 |
| Epichlorohydrin | yes | 106-89-8 | 1,000 |
| EPN | no | 2104-64-5 | 100/10,000 3 |
| Ergocalciferol | no | 50-14-6 | 1,000/10,000 3 |
| Ergotamine Tartrate | no | 379-79-3 | 500/10,000 3 |
| Ethylenediamine | yes | 107-15-3 | 10,000 |
| Ethylene Fluorohydrin | no | 371-62-0 | 10 |
| Ethyleneimine | yes | 151-56-4 | 500 |
| Ethylene Oxide | yes | 75-21-8 | 1,000 |
| Fenamiphos | no | 22224-92-6 | 10/10,000 3 |
| Fluenetil | no | 4301-50-2 | 100/10,000 3 |
| Fluorine | yes | 7782-41-4 | 500 |
| Fluoroacetamide | no | 640-19-7 | 100/10,000 3 |
| Fluoroacetic Acid | no | 144-49-0 | 10/10,000 3 |
| Fluoroacetyl Chloride | no | 359-06-8 | 10 |
| Fluorouracil | no | 51-21-8 | 500/10,000 3 |
| Formaldehyde 5 | yes | 50-00-0 | 500 |
| Formetanate Hydrochloride | no | 23422-53-9 | 500/10,000 3 |
| Formparanate | no | 17702-57-7 | 100/10,000 3 |
| Fuberidazole | no | 3878-19-1 | 100/10,000 3 |
| Furan | yes | 110-00-9 | 500 |
| Gallium Trichloride | no | 13450-90-3 | 500/10,000 3 |
| Hydrazine | yes | 302-01-2 | 1,000 |
| Hydrocyanic Acid | yes | 74-90-8 | 100 |
| Hydrogen Chloride (gas only) | yes | 7647-01-0 | 500 |
| Hydrogen Fluoride | yes | 7664-39-3 | 100 |
| Hydrogen Selenide | yes | 7783-07-5 | 10 |
| Hydrogen Sulfide | yes | 7783-06-4 | 500 |
| Hydroquinone 6 | no | 123-31-9 | 500/10,000 3 |
| Iron, Pentacarbonyl- | yes | 13463-40-6 | 100 |
| Isobenzan | no | 297-78-9 | 100/10,000 3 |
| Isobutyronitrile | yes | 78-82-0 | 1,000 |
| Isocyanic Acid, 3,4-Dichlorophenyl Ester | no | 102-36-3 | 500/10,000 3 |
| Isodrin | no | 465-73-6 | 100/10,000 3 |
| Isophorone Diisocyanate | no | 4098-71-9 | 100 |
| Isopropyl Chloroformate | yes | 108-23-6 | 1,000 |
| Leptophos | no | 21609-90-5 | 500/10,000 3 |
| Lewisite 2 | no | 541-25-3 | 10 |
| Lindane | no | 58-89-9 | 1,000/10,000 3 |
| Lithium Hydride 4 | no | 7580-67-8 | 100 |
| Malononitrile | no | 109-77-3 | 500/10,000 3 |
| Manganese, Tricarbonyl Methylcyclopentadienyl 2 | no | 12108-13-3 | 100 |
| Mechlorethamine 2 | no | 51-75-2 | 10 |
| Mercuric Acetate | no | 1600-27-7 | 500/10,000 3 |
| Mercuric Chloride | no | 7487-94-7 | 500/10,000 3 |
| Mercuric Oxide | no | 21908-53-2 | 500/10,000 3 |
| Methacrylonitrile | yes | 126-98-7 | 500 |
| Methacryloyl Chloride | no | 920-46-7 | 100 |
| Methacryloyloxyethyl Isocyanate | no | 30674-80-7 | 100 |
| Methamidophos | no | 10265-92-6 | 100/10,000 3 |
| Methanesulfonyl Fluoride | no | 558-25-8 | 1,000 |
| Methidathion | no | 950-37-8 | 500/10,000 3 |
| Methiocarb | no | 2032-65-7 | 500/10,000 3 |
| Methomyl | no | 16752-77-5 | 500/10,000 3 |
| Methoxyethylmercuric Acetate | no | 151-38-2 | 500/10,000 3 |
| Methyl Bromide | no | 74-83-9 | 1,000 |
| Methyl 2-Chloroacrylate | no | 80-63-7 | 500 |
| Methyl Chloroformate | yes | 79-22-1 | 500 |
| Methyl Hydrazine | yes | 60-34-4 | 500 |
| Methyl Isocyanate | yes | 624-83-9 | 500 |
| Methyl Isothiocyanate 4 | no | 556-61-6 | 500 |
| Methyl Mercaptan | yes | 74-93-1 | 500 |
| Methylmercuric Dicyanamide | no | 502-39-6 | 500/10,000 3 |
| Methyl Phosphonic Dichloride 4 | no | 676-97-1 | 100 |
| Methyl Thiocyanate | yes | 556-64-9 | 10,000 |
| Methyltrichlorosilane | yes | 75-79-6 | 500 |
| Methyl Vinyl Ketone | no | 78-94-4 | 10 |
| Metolcarb | no | 1129-41-5 | 100/10,000 3 |
| Mexacarbate | no | 315-18-4 | 500/10,000 3 |
| Mitomycin C | no | 50-07-7 | 500/10,000 3 |
| Monocrotophos | no | 6923-22-4 | 10/10,000 3 |
| Muscimol | no | 2763-96-4 | 500/10,000 3 |
| Mustard Gas 2 | no | 505-60-2 | 500 |
| Nickel Carbonyl | yes | 13463-39-3 | 1 |
| Nicotine Sulfate | no | 65-30-5 | 100/10,000 3 |
| Nitric Acid | yes | 7697-37-2 | 1,000 |
| Nitric Oxide | yes | 10102-43-9 | 100 |
| Nitrobenzene 2 | no | 98-95-3 | 10,000 |
| Nitrogen Dioxide | no | 10102-44-0 | 100 |
| Norbormide | no | 991-42-4 | 100/10,000 3 |
| Organorhodium Complex (PMN-82-147) | no | MIXTURE | 10/10,000 3 |
| Ouabain | no | 630-60-4 | 100/10,000 3 |
| Oxamyl | no | 23135-22-0 | 100/10,000 3 |
| Ozone | no | 10028-15-6 | 100 |
| Paraquat Dichloride | no | 1910-42-5 | 10/10,000 3 |
| Paraquat Methosulfate | no | 2074-50-2 | 10/10,000 3 |
| Parathion-Methyl | no | 298-00-0 | 100/10,000 3 |
| Paris Green | no | 12002-03-8 | 500/10,000 3 |
| Pentaborane | no | 19624-22-7 | 500 |
| Pentadecylamine | no | 2570-26-5 | 100/10,000 3 |
| Peracetic Acid | yes | 79-21-0 | 500 |
| Perchloromethylmercaptan | yes | 594-42-3 | 500 |
| Phenol | no | 108-95-2 | 500/10,000 3 |
| Phenol, 2,2'-Thiobis(4-Chloro-6-Methyl)- | no | 4418-66-0 | 100/10,000 3 |
| Phenol, 3-(1-Methylethyl)-, Methylcarbamate | no | 64-00-6 | 500/10,000 3 |
| Phenoxarsine, 10, 10' -- Oxydi- | no | 58-36-6 | 500/10,000 3 |
| Phenyl Dichloroarsine 2 | no | 696-28-6 | 500 |
| Phenylhydrazine Hydrochloride | no | 59-88-1 | 1,000/10,000 3 |
| Phenylmercury Acetate | no | 62-38-4 | 500/10,000 3 |
| Phenylsilatrane | no | 2097-19-0 | 100/10,000 3 |
| Phenylthiourea | no | 103-85-5 | 100/10,000 3 |
| Phorate 2 | no | 298-02-2 | 10 |
| Phosacetim | no | 4104-14-7 | 100/10,000 3 |
| Phosfolan | no | 947-02-4 | 100/10,000 3 |
| Phosgene | yes | 75-44-5 | 10 |
| Phosmet | no | 732-11-6 | 10/10,000 3 |
| Phosphine | yes | 7803-51-2 | 500 |
| Phosphonothioic Acid, Methyl-, S-(2-(Bis(1-Methylethyl)Amino)Ethyl) O-Ethyl Ester. 2 | no | 50782-69-9 | 100 |
| Phosphorus 4 | no | 7723-14-0 | 100 |
| Phosphorus Oxychloride | yes | 10025-87-3 | 500 |
| Phosphorus Pentachloride 4 | no | 10026-13-8 | 500 |
| Phosphorus Trichloride | yes | 7719-12-2 | 1,000 |
| Physostigmine | no | 57-47-6 | 100/10,000 3 |
| Physostigmine, Salicylate (1:1) | no | 57-64-7 | 100/10,000 3 |
| Picrotoxin | no | 124-87-8 | 500/10,000 3 |
| Piperidine | yes | 110-89-4 | 1,000 |
| Potassium Arsenite | no | 10124-50-2 | 500/10,000 3 |
| Potassium Cyanide 4 | no | 151-50-8 | 100 |
| Potassium Silver Cyanide 4 | no | 506-61-6 | 500 |
| Promecarb | no | 2631-37-0 | 500/10,000 3 |
| Propargyl Bromide | no | 106-96-7 | 10 |
| Propiolactone, Beta- 2 | no | 57-57-8 | 500 |
| Propionitrile | yes | 107-12-0 | 500 |
| Propiophenone, 4-Amino- | no | 70-69-9 | 100/10,000 3 |
| Propyl Chloroformate | yes | 109-61-5 | 500 |
| Prothoate | no | 2275-18-5 | 100/10,000 3 |
| Pyrene | no | 129-00-0 | 1,000/10,000 3 |
| Pyridine, 4-Amino- | no | 504-24-5 | 500/10,000 3 |
| Pyridine, 4-Nitro-, 1-Oxide | no | 1124-33-0 | 500/10,000 3 |
| Pyriminil | no | 53558-25-1 | 100/10,000 3 |
| Salcomine | no | 14167-18-1 | 500/10,000 3 |
| Sarin 2 | no | 107-44-8 | 10 |
| Selenious Acid | no | 7783-00-8 | 1,000/10,000 3 |
| Semicarbazide Hydrochloride | no | 563-41-7 | 1,000/10,000 3 |
| Sodium Arsenate | no | 7631-89-2 | 1,000/10,000 3 |
| Sodium Arsenite | no | 7784-46-5 | 500/10,000 3 |
| Sodium Azide (Na (N3)) 4 | no | 26628-22-8 | 500 |
| Sodium Cacodylate | no | 124-65-2 | 100/10,000 3 |
| Sodium Cyanide (Na (CN)) 4 | no | 143-33-9 | 100 |
| Sodium Fluoroacetate | no | 62-74-8 | 10/10,000 3 |
| Sodium Selenate | no | 13410-01-0 | 100/10,000 3 |
| Sodium Selenite | no | 10102-18-8 | 100/10,000 3 |
| Sodium Tellurite | no | 10102-20-2 | 500/10,000 3 |
| Stannane, Acetoxytriphenyl- | no | 900-95-8 | 500/10,000 3 |
| Strychnine | no | 57-24-9 | 100/10,000 3 |
| Strychnine Sulfate | no | 60-41-3 | 100/10,000 3 |
| Sulfur Dioxide | yes | 7446-09-5 | 500 |
| Sulfuric Acid 7 | no | 7664-93-9 | 1,000 |
| Sulfur Tetrafluoride | yes | 7783-60-0 | 100 |
| Sulfur Trioxide 4 | yes | 7446-11-9 | 100 |
| Tabun 2 | no | 77-81-6 | 10 |
| Tellurium Hexafluoride | no | 7783-80-4 | 100 |
| Tetramethyllead | yes | 75-74-1 | 100 |
| Tetranitromethane | yes | 509-14-8 | 500 |
| Thallium Sulfate | no | 10031-59-1 | 100/10,000 3 |
| Thallous Carbonate | no | 6533-73-9 | 100/10,000 3 |
| Thallous Chloride | no | 7791-12-0 | 100/10,000 3 |
| Thallous Malonate | no | 2757-18-8 | 100/10,000 3 |
| Thallous Sulfate | no | 7446-18-6 | 100/10,000 3 |
| Thiocarbazide | no | 2231-57-4 | 1,000/10,000 3 |
| Thiofanox | no | 39196-18-4 | 100/10,000 3 |
| Thiosemicarbazide | no | 79-19-6 | 100/10,000 3 |
| Thiourea, (2-Chlorophenyl)- | no | 5344-82-1 | 100/10,000 3 |
| Thiourea, (2-Methylphenyl)- | no | 614-78-8 | 500/10,000 3 |
| Titanium Tetrachloride | yes | 7550-45-0 | 100 |
| Toluene-2,4-Diisocyanate 8 | yes | 584-84-9 | 500 |
| Toluene-2,6-Diisocyanate 8 | yes | 91-08-7 | 100 |
| Triamiphos | no | 1031-47-6 | 500/10,000 3 |
| Trichloro(Chloromethyl)Silane | no | 1558-25-4 | 100 |
| Trichloro(Dichlorophenyl)Silane | no | 27137-85-5 | 500 |
| Triethoxysilane | no | 998-30-1 | 500 |
| Trimethylchlorosilane | yes | 75-77-4 | 1,000 |
| Trimethylolpropane Phosphite | no | 824-11-3 | 100/10,000 3 |
| Trimethyltin Chloride | no | 1066-45-1 | 500/10,000 3 |
| Triphenyltin Chloride | no | 639-58-7 | 500/10,000 3 |
| Tris(2-Chloroethyl)Amine 2 | no | 555-77-1 | 100 |
| Valinomycin | no | 2001-95-8 | 1,000/10,000 3 |
| Vanadium Pentoxide | no | 1314-62-1 | 100/10,000 3 |
| Vinyl Acetate Monomer | yes | 108-05-4 | 1,000 |
| Warfarin | no | 81-81-2 | 500/10,000 3 |
| Warfarin Sodium | no | 129-06-6 | 100/10,000 3 |
| Xylylene Dichloride | no | 28347-13-9 | 100/10,000 3 |
| Zinc, Dichloro(4,4-Dimethyl-5((((Methylamino) Carbonyl)Oxy)Imino) | |||
| Pentanenitrile)-, (T-4)-. | no | 58270-08-9 | 100/10,000 3 |
| Zinc Phosphide 4 | no | 1314-84-7 | 500 |
| a. If concentrated with greater than 100 pounds of sulfur trioxide or the acid meets the definition of oleum. (The Table 3 threshold for sulfur trioxide is 100 pounds.) (The Table 1 threshold for oleum is 10,000 pounds.) | |||
| b. If in a container with flammable hydrocarbons (flash point < 73° F). | |||
1 This column identifies substances which may appear on Table 1. Table 1 may have concentration limitations.
2 Substances that failed the evaluation pursuant to Section 25532(g)(2) of the HSC but remain listed pursuant to potential health impacts. The exemption in Section 5130.2(b)(1)(B) regarding portions of a process where these regulated substances are handled at partial pressures below 10 mm Hg does not apply to these substances.
3 These extremely hazardous substances are solids. The lesser quantity listed applies only if in powdered form and with a particle size of less than 100 microns; or if handled in solution or in molten form; or the substance has an NFPA rating for reactivity of 2, 3, or 4. Otherwise, a 10,000 pound threshold applies. The exemption in Section 5130.2(b)(1)(B) regarding portions of a process where these regulated substances are handled at partial pressures below 10 mm Hg does not apply to these substances.
4 These extremely hazardous substances are reactive solids. The exemption in Section 5130.2(b)(1)(B) regarding portions of a process where these regulated substances are handled at partial pressures below 10 mm Hg does not apply to these substances.
5 Appropriate synonyms or mixtures of extremely hazardous substances with the same CAS number are also regulated, e.g., formalin. The listing of ammonia includes anhydrous and aqueous forms of ammonia pursuant to Section 25532(g)(2).
6 Hydroquinone is exempt in crystalline form.
7 Sulfuric acid fails the evaluation pursuant to Section 25532(g)(2) of the HSC but remains listed as a Regulated Substance only under the following conditions:
8 The exemption in Section 5130.2(b)(1)(B) regarding portions of a process where these regulated substances are handled at partial pressures below 10 mm Hg does not apply to these substances.
Cal. Code Regs. Tit. 19, div. 5, ch. 2, art. 9, tbl. 3