Highly hazardous chemical


A highly hazardous chemical is a substance classified by the American Occupational Safety and Health Administration as material that is both toxic and reactive and whose potential for human injury is high if released. Highly hazardous chemicals may cause cancer, birth defects, induce genetic damage, cause miscarriage, injury and death from relatively small exposures.
Highly hazardous chemicals include:
ChemicalCAS numberThreshold quantity
Acetaldehyde75-07-02500
Acrolein107-02-8150
Acryloyl chloride814-68-6250
Allyl chloride107-05-11000
Allylamine107-11-91000
AlkylaluminumVaries5000
Ammonia, anhydrous7664-41-710000
Ammonia solutions 7664-41-715000
Ammonium perchlorate7790-98-97500
Ammonium permanganate7787-36-27500
Arsine7784-42-1100
Bis ether542-88-1100
Boron trichloride10294-34-52500
Boron trifluoride7637-07-2250
Bromine7726-95-61500
Bromine chloride13863-41-71500
Bromine pentafluoride7789-30-22500
Bromine trifluoride7787-71-515000
3-Bromopropyne106-96-7100
tert-Butyl hydroperoxide75-91-25000
tert-Butyl perbenzoate614-45-97500
Carbonyl chloride75-44-5100
Carbonyl fluoride353-50-42500
Cellulose nitrate 9004-70-02500
Chlorine7782-50-51500
Chlorine dioxide10049-04-41000
Chlorine pentafluoride13637-63-31000
Chlorine trifluoride7790-91-21000
Chlorodiethylaluminum96-10-65000
1-Chloro-2,4-dinitrobenzene97-00-75000
Chloromethyl methyl ether107-30-2500
Chloropicrin76-06-2500
Chloropicrin and methyl bromide mixture-1500
Chloropicrin and methyl chloride mixture-1500
Cumene hydroperoxide80-15-95000
Cyanogen460-19-52500
Cyanogen chloride506-77-4500
Cyanuric fluoride675-14-9100
Diacetyl peroxide 110-22-55000
Diazomethane334-88-3500
Dibenzoyl peroxide94-36-07500
Diborane19287-45-7100
tert-Dibutyl peroxide110-05-45000
Dichloroacetylene7572-29-4250
Dichlorosilane4109-96-02500
Diethylzinc557-20-010000
Diisopropyl peroxydicarbonate105-64-67500
Dilauroyl peroxide105-74-87500
Dimethyldichlorosilane75-78-51000
1,1-Dimethylhydrazine57-14-71000
Dimethylamine, anhydrous124-40-32500
2,4-Dinitroaniline97-02-95000
Ethyl nitrite109-95-55000
Ethylamine75-04-77500
Ethylene fluorohydrin371-62-0100
Ethylene Oxide75-21-85000
Ethyleneimine151-56-41000
Fluorine7782-41-41000
Formaldehyde 50-00-01000
Furan110-00-9500
Hexafluoroacetone684-16-25000
Hydrochloric acid, anhydrous7647-01-05000
Hydrofluoric acid, anhydrous7664-39-31000
Hydrogen bromide10035-10-65000
Hydrogen chloride7647-01-05000
Hydrogen cyanide, anhydrous74-90-81000
Hydrogen fluoride7664-39-31000
Hydrogen peroxide 7722-84-17500
Hydrogen selenide7783-07-5150
Hydrogen sulfide7783-06-41500
Hydroxylamine7803-49-82500
Iron pentacarbonyl13463-40-6250
Isopropylamine75-31-05000
Ketene463-51-4100
Methacrylaldehyde78-85-31000
Methacryloyl chloride920-46-7150
Methacryloyloxyethyl isocyanate30674-80-7100
Methyl acrylonitrile126-98-7250
Methylamine, anhydrous74-89-51000
Methyl bromide74-83-92500
Methyl chloride74-87-315000
Methyl chloroformate79-22-1500
Methyl ethyl ketone peroxide1338-23-45000
Methyl fluoroacetate453-18-9100
Methyl fluorosulfate421-20-5100
Methyl hydrazine60-34-4100
Methyl iodide74-88-47500
Methyl isocyanate624-83-9250
Methyl mercaptan74-93-15000
Methyl vinyl ketone79-84-4100
Methyltrichlorosilane75-79-6500
Nickel carbonyl13463-39-3150
Nitric acid 7697-37-2500
Nitric oxide10102-43-9250
para-Nitroaniline100-01-65000
Nitromethane75-52-52500
Nitrogen dioxide10102-44-0250
Nitrogen oxides 10102-44-0250
Nitrogen tetroxide10544-72-6250
Nitrogen trifluoride7783-54-25000
Nitrogen trioxide10544-73-7250
Oleum 8014-95-71000
Osmium tetroxide20816-12-0100
Oxygen difluoride7783-41-7100
Ozone10028-15-6100
Pentaborane19624-22-7100
Peracetic acid 79-21-01000
Perchloric acid 7601-90-35000
Perchloromethyl mercaptan594-42-3150
Perchloryl fluoride7616-94-65000
Phosgene75-44-5100
Phosphine7803-51-2100
Phosphorus oxychloride10025-87-31000
Phosphorus trichloride7719-12-21000
Phosphoryl chloride10025-87-31000
Propargyl bromide106-96-7100
Propyl nitrate627-3-42500
Sarin107-44-8100
Selenium hexafluoride7783-79-11000
Stibine7803-52-3500
Sulfur dioxide 7446-09-51000
Sulfur pentafluoride5714-22-7250
Sulfur tetrafluoride7783-60-0250
Sulfur trioxide7446-11-91000
Sulfuric anhydride7446-11-91000
Tellurium hexafluoride7783-80-4250
Tetrafluoroethylene116-14-35000
Tetrafluorohydrazine10036-47-25000
Tetramethyl lead75-74-11000
Thionyl chloride7719-09-7250
Trichlorosilane1558-25-4100
Trichlorosilane27137-85-52500
Trichlorosilane10025-78-25000
Trifluorochloroethylene79-38-910000
Trimethyoxysilane2487-90-31500