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Occupational Safety and Health Standards: Hazardous Materials, List of Highly Hazardous Chemicals, Toxics and Reactives (Mandatory).
If you are the victim of construction accidents, use this page to conduct research. To have your case evaluated immediately, please fill out our form. Read more about the Occupational Safety and Health Standards, 1910.119 App A, Hazardous Materials, 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.
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CHEMICAL NAME | CAS* | TQ**
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Acetaldehyde | 75-07-0 | 2500
Acrolein (2-Popenal) | 107-02-8 | 150
Acrylyl Chlorde | 814-68-6 | 250
Allyl Chlorid | 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 (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| |
greater than 12.6% nitrogen | 9004-70-0 | 2500
Chlorine | 7782-50-5 | 1500
Chlorine Dioxide | 10049-04-4 | 1000
Chlorine Pentrafluoride | 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 greater | |
than 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
Dilauroyl 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 | |
greater than 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 greater | |
than 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 Carbonly (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; NO(2); | |
N2O4; N2O3) | 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 | |
greater 60% Acetic Acid; also | |
called Peroxyacetic Acid) | 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
Peroxyacetic Acid (concentration| |
greater than 60% Acetic Acid; | |
also called Peracetic Acid) | 79-21-0 | 1000
Phosgene (also called Carbonyl | 75-44-5 | 100
Chloride) | |
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
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Footnote* Chemical Abstract Service Number
Footnote** Threshold Quantity in Pounds (Amount necessary to be
covered by this standard.)
[57 FR 7847, Mar. 4, 1992]
Act now! It is essential that you inquire about your case as soon as possible. Litigation may be the only way to receive the damages to which you may be entitled, such as medical and health care bills, lost or diminished wages, and financial compensation to family in the case of death. Your individual state's law may limit your time to bring a legal claim to protect your rights. You need to have your construction accidents claim evaluated immediately!
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