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Regulations (Standards - 29 CFR)
List of Highly Hazardous Chemicals, Toxics and Reactives (Mandatory) - 1926.64 App A |
Regulations (Standards - 29 CFR) - Table of Contents |
| • Part Number: | 1926 |
| • Part Title: | Safety and Health Regulations for Construction |
| • Subpart: | D |
| • Subpart Title: | Occupational Health and Environmental Controls |
| • Standard Number: | 1926.64 App A |
| • Title: | List of Highly Hazardous Chemicals, Toxics and Reactives (Mandatory) |
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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-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 (greater than 44 | |
percent ammonia by weight)............| 7664-41-7 | 15000
Ammonium Perchlorate....................| 7790-98-9 | 500
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 percent 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
Commune Hydroperoxide...................| 80-15-9 | 5000
Cyanogen................................| 460-19-5 | 2500
Cyanogen Chloride.......................| 506-77-4 | 500
Cyanuric Fluoride.......................| 675-14-9 | 100
Diastole Peroxide (concentration | |
greater than 70 percent)..............| 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 percent)| 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 percent 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 | |
percent)..............................| 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 percent 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 percent to 80 percent 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 percent Acetic Acid; also called | |
Peroxyacetic Acid)...................| 79-21-0 | 1000
Perchloric Acid (concentration greater | |
than 60 percent by weight)............| 7601-90-3 | 5000
Perchloromethyl Mercaptan...............| 594-42-3 | 150
Perchloryl Fluoride.....................| 7616-94-6 | 5000
Peroxyacetic Acid (concentration | |
greater than 60 percent 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
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Footnote(*) Chemical Abstract Service Number
Footnote(**) Threshold Quantity in Pounds (Amount necessary to be
covered by this standard.)
[58 FR 35115, June 30, 1993] |
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Next Standard (1926.64 App B) |
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Regulations (Standards - 29 CFR) - Table of Contents |
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