Wash. Admin. Code § 296-67-285
Current through Register Vol. 24-23, December 1, 2024
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). | ||
Wash. Admin. Code § 296-67-285
Statutory Authority: Chapter 49.17 RCW. 93-21-075 (Order 93-06), § 296-67-285, filed 10/20/93, effective 12/1/93; 92-17-022 (Order 92-06), § 296-67-285, filed 8/10/92, effective 9/10/92.