PDFWAC 296-67-285
Appendix A—List of highly hazardous chemicals, toxics and reactives (mandatory).
This appendix contains a listing of toxic and reactive highly hazardous chemicals which present a potential for a catastrophic event at or above the threshold quantity.
CHEMICAL NAME | CAS* | TQ** | |
Acetaldehyde | 75-07-0 | 2500 | |
Acrolein (2-Propenal) | 107-02-8 | 150 | |
Acrylyl Chloride | 814-68-6 | 250 | |
Allyl Chloride | 107-05-1 | 1000 | |
Allylamine | 107-11-9 | 1000 | |
Alkylaluminums | Varies | 5000 | |
Ammonia, Anhydrous | 7664-41-7 | 10000 | |
Ammonia solutions (˃44% ammonia by weight) | 7664-41-7 | 15000 | |
Ammonium Perchlorate | 7790-98-9 | 7500 | |
Ammonium Permanganate | 7787-36-2 | 7500 | |
Arsine (also called Arsenic Hydride) | 7784-42-1 | 100 | |
Bis(Chloromethyl) Ether | 542-88-1 | 100 | |
Boron Trichloride | 10294-34-5 | 2500 | |
Boron Trifluoride | 7637-07-2 | 250 | |
Bromine | 7726-95-6 | 1500 | |
Bromine Chloride | 13863-41-7 | 1500 | |
Bromine Pentafluoride | 7789-30-2 | 2500 | |
Bromine Trifluoride | 7787-71-5 | 15000 | |
3-Bromopropyne (also called Propargyl Bromide) | 106-96-7 | 100 | |
Butyl Hydroperoxide (Tertiary) | 75-91-2 | 5000 | |
Butyl Perbenzoate (Tertiary) | 614-45-9 | 7500 | |
Carbonyl Chloride (see Phosgene) | 75-44-5 | 100 | |
Carbonyl Fluoride | 353-50-4 | 2500 | |
Cellulose Nitrate (concentration ˃12.6% nitrogen) | 9004-70-0 | 2500 | |
Chlorine | 7782-50-5 | 1500 | |
Chlorine Dioxide | 10049-04-4 | 1000 | |
Chlorine Pentafluoride | 13637-63-3 | 1000 | |
Chlorine Trifluoride | 7790-91-2 | 1000 | |
Chlorodiethylaluminum (also called Diethylaluminum Chloride) | 96-10-6 | 5000 | |
1-Chloro-2,4-Dinitrobenzene | 97-00-7 | 5000 | |
Chloromethyl Methyl Ether | 107-30-2 | 500 | |
Chloropicrin | 76-06-2 | 500 | |
Chloropicrin and Methyl Bromide mixture | None | 1500 | |
Chloropicrin and Methyl Chloride mixture | None | 1500 | |
Cumene Hydroperoxide | 80-15-9 | 5000 | |
Cyanogen | 460-19-5 | 2500 | |
Cyanogen Chloride | 506-77-4 | 500 | |
Cyanuric Fluoride | 675-14-9 | 100 | |
Diacetyl Peroxide (Concentration ˃70%) | 110-22-5 | 5000 | |
Diazomethane | 334-88-3 | 500 | |
Dibenzoyl Peroxide | 94-36-0 | 7500 | |
Diborane | 19287-45-7 | 100 | |
Dibutyl Peroxide (Tertiary) | 110-05-4 | 5000 | |
Dichloro Acetylene | 7572-29-4 | 250 | |
Dichlorosilane | 4109-96-0 | 2500 | |
Diethylzinc | 557-20-0 | 10000 | |
Diisopropyl Peroxydicarbonate | 105-64-6 | 7500 | |
Dilaluroyl Peroxide | 105-74-8 | 7500 | |
Dimethyldichlorosilane | 75-78-5 | 1000 | |
Dimethylhydrazine, 1,1- | 57-14-7 | 1000 | |
Dimethylamine, Anhydrous | 124-40-3 | 2500 | |
2,4-Dinitroaniline | 97-02-9 | 5000 | |
Ethyl Methyl Ketone Peroxide (also Methyl Ethyl Ketone Peroxide; concentration ˃60%) | 1338-23-4 | 5000 | |
Ethyl Nitrite | 109-95-5 | 5000 | |
Ethylamine | 75-04-7 | 7500 | |
Ethylene Fluorohydrin | 371-62-0 | 100 | |
Ethylene Oxide | 75-21-8 | 5000 | |
Ethyleneimine | 151-56-4 | 1000 | |
Fluorine | 7782-41-4 | 1000 | |
Formaldehyde (Formalin) | 50-00-0 | 1000 | |
Furan | 110-00-9 | 500 | |
Hexafluoroacetone | 684-16-2 | 5000 | |
Hydrochloric Acid, Anhydrous | 7647-01-0 | 5000 | |
Hydrofluoric Acid, Anhydrous | 7664-39-3 | 1000 | |
Hydrogen Bromide | 10035-10-6 | 5000 | |
Hydrogen Chloride | 7647-01-0 | 5000 | |
Hydrogen Cyanide, Anhydrous | 74-90-8 | 1000 | |
Hydrogen Fluoride | 7664-39-3 | 1000 | |
Hydrogen Peroxide (52% by weight or greater) | 7722-84-1 | 7500 | |
Hydrogen Selenide | 7783-07-5 | 150 | |
Hydrogen Sulfide | 7783-06-4 | 1500 | |
Hydroxylamine | 7803-49-8 | 2500 | |
Iron, Pentacarbonyl | 13463-40-6 | 250 | |
Isopropylamine | 75-31-0 | 5000 | |
Ketene | 463-51-4 | 100 | |
Methacrylaldehyde | 78-85-3 | 1000 | |
Methacryloyl Chloride | 920-46-7 | 150 | |
Methacryloyloxyethyl Isocyanate | 30674-80-7 | 100 | |
Methyl Acrylonitrile | 126-98-7 | 250 | |
Methylamine, Anhydrous | 74-89-5 | 1000 | |
Methyl Bromide | 74-83-9 | 2500 | |
Methyl Chloride | 74-87-3 | 15000 | |
Methyl Chloroformate | 79-22-1 | 500 | |
Methyl Ethyl Ketone Peroxide (concentration ˃60%) | 1338-23-4 | 5000 | |
Methyl Fluoroacetate | 453-18-9 | 100 | |
Methyl Fluorosulfate | 421-20-5 | 100 | |
Methyl Hydrazine | 60-34-4 | 100 | |
Methyl Iodide | 74-88-4 | 7500 | |
Methyl Isocyanate | 624-83-9 | 250 | |
Methyl Mercaptan | 74-93-1 | 5000 | |
Methyl Vinyl Ketone | 79-84-4 | 100 | |
Methyltrichlorosilane | 75-79-6 | 500 | |
Nickel Carbonyl (Nickel Tetracarbonyl) | 13463-39-3 | 150 | |
Nitric Acid (94.5% by weight or greater) | 7697-37-2 | 500 | |
Nitric Oxide | 10102-43-9 | 250 | |
Nitroaniline (para Nitroaniline) | 100-01-6 | 5000 | |
Nitromethane | 75-52-5 | 2500 | |
Nitrogen Dioxide | 10102-44-0 | 250 | |
Nitrogen Oxides (NO; NO2; N204; N203) | 10102-44-0 | 250 | |
Nitrogen Tetroxide (also called Nitrogen Peroxide) | 10544-72-6 | 250 | |
Nitrogen Trifluoride | 7783-54-2 | 5000 | |
Nitrogen Trioxide | 10544-73-7 | 250 | |
Oleum (65% to 80% by weight; also called Fuming Sulfuric Acid) | 8014-94-7 | 1000 | |
Osmium Tetroxide | 20816-12-0 | 100 | |
Oxygen Difluoride (Fluorine Monoxide) | 7783-41-7 | 100 | |
Ozone | 10028-15-6 | 100 | |
Pentaborane | 19624-22-7 | 100 | |
Peracetic Acid (concentration ˃60% Acetic Acid; also called Peroxyacetic Acid) | 79-21-0 | 1000 | |
Perchloric Acid (concentration ˃60% by weight) | 7601-90-3 | 5000 | |
Perchloromethyl Mercaptan | 594-42-3 | 150 | |
Perchloryl Fluoride | 7616-94-6 | 5000 | |
Peroxyacetic Acid (concentration ˃60% Acetic Acid; also called Peracetic Acid) | 79-21-0 | 1000 | |
Phosgene (also called Carbonyl Chloride) | 75-44-5 | 100 | |
Phosphine (Hydrogen Phosphide) | 7803-51-2 | 100 | |
Phosphorus Oxychloride (also called Phosphoryl Chloride) | 10025-87-3 | 1000 | |
Phosphorus Trichloride | 7719-12-2 | 1000 | |
Phosphoryl Chloride (also called Phosphorus Oxychloride) | 10025-87-3 | 1000 | |
Propargyl Bromide | 106-96-7 | 100 | |
Propyl Nitrate | 627-3-4 | 2500 | |
Sarin | 107-44-8 | 100 | |
Selenium Hexafluoride | 7783-79-1 | 1000 | |
Stibine (Antimony Hydride) | 7803-52-3 | 500 | |
Sulfur Dioxide (liquid) | 7446-09-5 | 1000 | |
Sulfur Pentafluoride | 5714-22-7 | 250 | |
Sulfur Tetrafluoride | 7783-60-0 | 250 | |
Sulfur Trioxide (also called Sulfuric Anhydride) | 7446-11-9 | 1000 | |
Sulfuric Anhydride (also called Sulfur Trioxide) | 7446-11-9 | 1000 | |
Tellurium Hexafluoride | 7783-80-4 | 250 | |
Tetrafluoroethylene | 116-14-3 | 5000 | |
Tetrafluorohydrazine | 10036-47-2 | 5000 | |
Tetramethyl Lead | 75-74-1 | 1000 | |
Thionyl Chloride | 7719-09-7 | 250 | |
Trichloro (chloromethyl) Silane | 1558-25-4 | 100 | |
Trichloro (dichlorophenyl) Silane | 27137-85-5 | 2500 | |
Trichlorosilane | 10025-78-2 | 5000 | |
Trifluorochloroethylene | 79-38-9 | 10000 | |
Trimethyoxysilane | 2487-90-3 | 1500 | |
* ** | Chemical Abstract Service Number. Threshold Quantity in Pounds (Amount necessary to be covered by this standard). | ||
[Statutory Authority: Chapter 49.17 RCW. WSR 93-21-075 (Order 93-06), § 296-67-285, filed 10/20/93, effective 12/1/93; WSR 92-17-022 (Order 92-06), § 296-67-285, filed 8/10/92, effective 9/10/92.]