| Chemical | CAS number | Threshold quantity (lbs) |
|---|
| Acetaldehyde | 75-07-0 | 2500 |
| Acrolein | 107-02-8 | 150 |
| Acryloyl chloride | 814-68-6 | 250 |
| Allyl chloride | 107-05-1 | 1000 |
| Allylamine | 107-11-9 | 1000 |
| Alkylaluminum | Varies | 5000 |
| Ammonia, anhydrous | 7664-41-7 | 10000 |
| Ammonia solutions (greater than 44% ammonia by weight) | 7664-41-7 | 15000 |
| Ammonium perchlorate | 7790-98-9 | 7500 |
| Ammonium permanganate | 7787-36-2 | 7500 |
| Arsine | 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 | 106-96-7 | 100 |
| tert-Butyl hydroperoxide | 75-91-2 | 5000 |
| tert-Butyl perbenzoate | 614-45-9 | 7500 |
| Carbonyl chloride | 75-44-5 | 100 |
| Carbonyl fluoride | 353-50-4 | 2500 |
| Cellulose nitrate (concentration greater than 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 | 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 greater than 70%) | 110-22-5 | 5000 |
| Diazomethane | 334-88-3 | 500 |
| Dibenzoyl peroxide | 94-36-0 | 7500 |
| Diborane | 19287-45-7 | 100 |
| tert-Dibutyl peroxide | 110-05-4 | 5000 |
| Dichloroacetylene | 7572-29-4 | 250 |
| Dichlorosilane | 4109-96-0 | 2500 |
| Diethylzinc | 557-20-0 | 10000 |
| Diisopropyl peroxydicarbonate | 105-64-6 | 7500 |
| Dilauroyl peroxide | 105-74-8 | 7500 |
| Dimethyldichlorosilane | 75-78-5 | 1000 |
| 1,1-Dimethylhydrazine | 57-14-7 | 1000 |
| Dimethylamine, anhydrous | 124-40-3 | 2500 |
| 2,4-Dinitroaniline | 97-02-9 | 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 | 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 | 13463-39-3 | 150 |
| Nitric acid (94.5% by weight or greater) | 7697-37-2 | 500 |
| Nitric oxide | 10102-43-9 | 250 |
| para-Nitroaniline | 100-01-6 | 5000 |
| Nitromethane | 75-52-5 | 2500 |
| Nitrogen dioxide | 10102-44-0 | 250 |
| Nitrogen oxides (NO; NO2; N2O4; N2O3) | 10102-44-0 | 250 |
| Nitrogen tetroxide | 10544-72-6 | 250 |
| Nitrogen trifluoride | 7783-54-2 | 5000 |
| Nitrogen trioxide | 10544-73-7 | 250 |
| Oleum (65% to 80% by weight) | 8014-95-7 | 1000 |
| Osmium tetroxide | 20816-12-0 | 100 |
| Oxygen difluoride | 7783-41-7 | 100 |
| Ozone | 10028-15-6 | 100 |
| Pentaborane | 19624-22-7 | 100 |
| Peracetic acid (concentration greater than 60%) | 79-21-0 | 1000 |
| Perchloric acid (concentration greater than 60% by weight) | 7601-90-3 | 5000 |
| Perchloromethyl mercaptan | 594-42-3 | 150 |
| Perchloryl fluoride | 7616-94-6 | 5000 |
| Phosgene | 75-44-5 | 100 |
| Phosphine | 7803-51-2 | 100 |
| Phosphorus oxychloride | 10025-87-3 | 1000 |
| Phosphorus trichloride | 7719-12-2 | 1000 |
| Phosphoryl chloride | 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 | 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 | 7446-11-9 | 1000 |
| Sulfuric anhydride | 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 |