Physical Hazards Substance Name CAS # Pyrophoric Water Reactive Explosive Acetyl bromide 110-22-5   X   Acetyl chloride 75-36-5   X   Acetyl peroxide 110-22-5     X Aluminum alkyl halides -- X X   Aluminum alkyl hydrides -- X X   Aluminum alkyls --   X   Aluminum aminoborohydride -- X     Aluminum borohydride 16962-07-5 X X   Aluminum carbide 1299-86-1   X   Aluminum ferrosilcon powder 12003-41-7   X   Aluminum hydride 7784-21-6 X X   Aluminum phosphide 20859-73-8 X     Aluminum powder 7429-90-5 X X   Aluminum silicon powder -- X X   Ammonium perchlorate 7790-98-9     X Ammonium picrate 131-74-8     X Amyl trichlorosilane 107-72-2   X   Antimony pentachloride 7647-18-9   X   Antimony, triethyl 617-85-6   X   Antimony, trimethyl 594-10-5   X   Arsenic trichloride 7784-34-1   X   Arsenic, triethyl 617-75-4   X   Arsenic, trimethyl 593-88-4   X   Barium azide 18810-58-7     X Barium carbide 12070-27-8   X   Barium hydride 13477-09-3   X   Barium sulfide 21109-95-5   X   Benzene, 1,2-epoxyethyl 96-09-3 X     Benzoyl chloride 98-88-4   X   Benzoyl peroxide 94-36-0     X Benzyl sodium 1121-53-5 X     Beryllium 7440-41-7 X     Beryllium borohydride 30374-53-9 X     Beryllium hydride 7787-52-2 X     Bis(ethylamino) siloxenebis-cyclopentadienyl manganese -- X     Bis-dimethylstibine oxide -- X     Bismuth 7440-69-9 X     Boron 7440-42-8 X     Boron arsenotribromideboron chloride tetramer -- X     Boron triazide -- X     Boron tribromide 10294-33-4 X     Boron trifluoride dimethyl etherate 353-42-4   X   Boron, triethyl 97-94-9 X     Boron, trimethyl 593-90-8 X     Bromine pentafluoride 7789-30-2 X     Bromoacetylene 593-61-3 X     Bromoethyne 593-61-3 X     Bromopropyne 106-96-7     X Bromosilane 13465-73-1 X     Butadiene 106-99-0 X     Butanone peroxide 1338-23-4     X Butyl lithium 109-72-8 X     Cacodyl 471-35-2 X     Cacodyl arsine -- X     Cacodyl chloride 557-89-1 X     Cacodyl sulfide 591-10-6 X     Cadmium 7440-43-9 X     Cadmium amide 22750-53-4 X     Cadmium nitride 12380-95-9 X     Calcium 7440-70-2 X X   Calcium carbide 75-20-7 X X   Calcium cyanamide 156-62-7   X   Calcium hydride 7789-78-8 X X   Calcium hypochlorite 7778-54-3 X     Calcium magnesium silicon --   X   Calcium nitride 12013-82-0 X     Calcium phosphide 1305-99-3 X     Calcium silicide 12737-18-7   X   Calcium sulfide 20548-54-3 X     Carbon disulfide 75-15-0 X     Carbon hexachloride 98299-61-7 X     Carbon trichloride -- X     Cerium (powder or turnings) 7440-45-1 X X   Cerium hydride 13864-02-3 X     Cerium nitride 25764-08-3 X     Cesium 7440-46-2 X X   Cesium amide 22205-57-8 X     Cesium hydride 13772-47-9 X     Cesium oxide 20281-00-9 X     Cesium phosphide 113737-02-3 X     Cesium silicide 39293-43-1 X     Charcoal 16291-96-6 X     Chlorine trifluoride 7790-91-2 X     Chloroacetylene 593-63-5 X     Chlorodimethyl arsine 557-89-1 X     Chloroethyne 593-63-5 X     Chlorosulfonic acid 7790-94-5 X     Chromium 7440-47-3 X     Chromium oxide 12018-00-7 X     Chromium-cobalt alloy 11114-92-4 X     Chromyl chloride 14977-61-8 X     Cobalt (powder) 7440-48-4 X     Cobalt abietate 26998-20-9 X     Cobalt nitride 10141-05-6 X     Cobaltous resinate 68956-82-1 X     Copper (dust) 7440-50-8 X     Copper hydride 13517-00-5 X     Cumene peroxide 80-15-9     X Cupric phosphide 12019-57-7 X     Decaborane 17702-41-9 X     Diacetylene 460-12-8 X     Diamidophosphorous acid 10043-91-1 X     Diazirine 157-22-2 X     Diazodinitrophenol 4682-03-5     X Diborane 19287-45-7 X     Dibutyl boron chloride 1730-69-4 X     Dibutyl chloroborane -- X     Dibutyl magnesium 1191-47-5 X     Di-chloroacetylene 7572-29-4 X     Diethyl arsine 692-42-2 X     Diethyl beryllium 542-63-2 X     Diethyl cadmium 592-02-9 X     Diethyl dichlorosilane -- X     Diethyl phosphine 627-49-6 X     Diethyl zinc 557-20-0 X X   Diethylaluminum bromide 760-19-0 X     Diethylaluminum chloride 96-10-6 X     Diethylaluminum hydride 871-27-2 X     Difluorourea 1510-31-2 X     Digermane 13818-89-8 X     Diisobutyl aluminum chloride 1779-25-5 X     Diisobutyl aluminum hydride 1191-15-7 X     Diisopropylberyllium 15721-33-2 X     Dimethyl allyl arsine -- X     Dimethyl arsine 593-57-7 X     Dimethyl beryllium 506-63-8 X     Dimethyl cadmium 506-82-1 X     Dimethyl dichlorosilane 1066-35-9 X     Dimethyl magnesium 2999-74-8 X     Dimethyl manganese 33212-68-9 X     Dimethyl phosphine 676-59-5 X     Dimethyl phosphoramidate 597-07-9 X     Dimethylchloroarsine 557-89-1 X     Dimethylzinc 544-97-8   X   Dinitrophenol 51-28-5     X Dinitrophenylhydrazine 119-26-6     X Dinitroresorcinol 616-74-0     X Diphosphine 13445-50-6 X     Dipicryl amine 131-73-7     X Dipicryl sulfide 28930-30-5     X Dipropyl aluminum hydride -- X     Dipropyl chloroborane 22086-53-9 X     Dipropyl zinc 628-91-1 X     Disilane 1590-87-0 X     Disilylamino diborane -- X     Disilylamino dichloroborane -- X     Disulfur dinitride 25474-92-4 X     Divanadium dodecacarbonyl -- X     Divinyl zinc 1119-22-8 X     Dodecanoyl peroxide 105-74-8     X Ethanoyl bromide 506-96-7 X     Ethanoyl chloride 75-36-5 X     Ethyl aluminum sesquichloride 12075-68-2 X     Ethyl lithium 811-49-4 X     Ethyl nitrite 109-95-5 X     Ethyl pentaborane 28853-06-7 X     Ethyl trichlorosilane 115-21-9 X     Ethylaluminum dichloride 563-43-9 X     Ethyldichlorosilane 1789-58-8   X   Ethylene oxide 75-21-8     X Europium (powder) 7440-53-1 X     Ferrosilicon 8049-17-0   X   Gallium hydride 13572-93-5 X     Germanium hydride 7782-65-2 X     Germanium tetrahydride 7782-65-2 X     Hafnium (powder) 7440-58-6 X     Hafnium borohydride -- X     Hexaborane 2377-80-2 X     Hexachlorodisilane 13465-77-5   X   Hydrogen phosphide 10028-24-7 X     Iron pentacarbonyl 13463-40-6 X     Iron powder 7439-89-6 X     Lauric peroxide 105-74-8     X Lead azide 13424-46-9     X Lead imide -- X     Lithium 7439-93-2 X X   Lithium alkyls --   X   Lithium aluminum hydride 16853-85-3 X X   Lithium aluminum tri- tert -butoxyhydride 17476-04-9 X     Lithium amide 7782-89-0 X     Lithium azide 19597-69-4     X Lithium borohydride 16949-15-8 X X   Lithium dimethylamide 3585-33-9 X     Lithium ferrosilicon 70399-13-2   X   Lithium hydride 7580-67-8 X X   Lithium nitride 26134-62-3   X   Lithium phosphide 12057-29-3 X     Lithium silicide 68848-64-6 X X   Lithium tetramethyl borate 2169-38-2 X     Magnesium (powder, beads or turnings) 7439-95-4 X X   Magnesium alkyls --   X   Magnesium aluminum phosphide --   X   Magnesium diamide 7803-54-5 X     Magnesium hydride 7693-27-8 X X   Magnesium phosphide 12057-74-8 X X   Magnesium silicide 22831-39-6   X   Magnesium, diethyl 557-18-6 X     Magnesium, diphenyl 555-54-4 X     Maneb 12427-38-2   X   Manganese 7439-96-5 X X   Manganese heptoxide 12057-92-0 X     Mercury azide 38232-63-2     X Mercury fulminate 628-86-4     X Methyl aluminum sesquibromide 12263-85-3 X     Methyl aluminum sesquichloride 12542-85-7 X     Methyl copper -- X     Methyl ethyl ketone peroxide 1338-23-4     X Methyl lithium 917-54-4 X     Methyl magnesium bromide --   X   Methyl phosphine 593-54-4 X     Methyl trichlorosilane 75-79-6 X     Methyldichlorosilane 75-54-7   X   Methylene dilithium -- X     Methylethyliodoarsine 65313-31-7 X     Methylhydrazine 60-34-4 X     Monochlorodiborane -- X     n -propyl lithium 2417-93-8 X     Nickel carbonyl 13463-39-3 X     Nickel lanthanum alloy -- X     Nitrocellulose 9004-70-0     X Nitrogen trifluoride 7783-54-2     X Nitrogen triiodide 13444-85-4     X Nitroglycerine 55-63-0     X Nitroguanidine 556-88-7     X Nitromethane 75-52-5     X Nitrosilane -- X     Nitrourea 556-89-8     X Oxodisilane 22755-00-6 X     Pentaborane 19624-22-7 X     Pentamethyl aluminum hydride -- X     Phenyl cyclotetramethylene borine -- X     Phenyl lithium 591-51-5 X     Phenylsilver 5274-48-6 X     Phosphine 7803-51-2 X     Phosphorus 7723-14-0 X     Phosphorus oxychloride 10025-87-3 X     Phosphorus pentachloride 10026-13-8 X X   Phosphorus pentasulfide 7723-14-0 X X   Phosphorus sesquisulfide 1314-85-8 X X   Phosphorus trichloride 7719-12-2 X     Phosphorus trioxide 1314-24-5 X     Picramide 489-98-5     X Picric acid 88-89-1     X Picryl chloride 88-88-0     X Picryl sulfonic acid 2508-19-2     X Potassium 7440-09-7 X X   Potassium arsenic alloy -- X     Potassium borohydride 13762-51-1   X   Potassium carbide 22754-96-7 X     Potassium carbonyl 12397-35-2 X     Potassium graphite 12081-88-8 X     Potassium hydride 7693-26-7 X     Potassium nitride 29285-24-3 X     Potassium nitromethane --       Potassium peroxide 17014-71-0   X   Potassium phosphide 20770-41-6 X X   Potassium sodium alloys 11135-81-2   X   Potassium-antimony alloy -- X     Propargyl bromide 106-96-7     X Prosiloxane -- X     Pyridinium perchlorate 15598-34-2 X     Rubidium 7440-17-7 X X   Rubidium hydride 13446-75-8 X     Silane 7803-62-5 X     Silyl phosphine   X     Sodium 7440-23-5 X X   Sodium aluminum hydride 13770-96-2 X X   Sodium amalgam -- X     Sodium amide 7782-92-5 X     Sodium borohydride 16940-66-2   X   Sodium carbide 2881-62-1 X     Sodium hydrazide 13598-47-5 X     Sodium hydride 7646-69-7 X X   Sodium hydrosulfite 7775-14-6 X     Sodium lead alloy 12740-44-2 X     Sodium methylate 124-41-4 X     Sodium nitromethane -- X     Sodium phosphamide -- X     Sodium phosphide 24167-76-8 X X   Sodium silicide 152379-81-2 X     Sodium sulfide 1313-82-2 X     Sodium-potassium alloy 11135-81-2 X     Stannic phosphide 25324-56-5 X X   Strontium 7440-24-6 X X   Strontium azide 19465-89-5 X     Strontium hydride 13598-33-9 X     Strontium phosphide 12504-13-1   X   Succinic peroxide 12-23-9     X Sulfur (powder) 7704-34-9 X     Sulfur trioxide 7446-11-9   X   Sulfuryl chloride 7791-25-5   X   Tetraborane 18283-93-7 X     Tetrachlorodiborane 13701-67-2 X     Tetramethyl diborane 21482-59-7 X     Tetramethyl digalline -- X     Tetramethyl silane 75-76-3 X     Tetranitroaniline 3698-54-2     X Tetraphenyl diarsine -- X     Thiophosphoryl fluoride 2404-52-4 X     Thorium 7440-29-1 X     Thorium hydride 140004-84-0 X     Thorium oxysulfide -- X     Titanium dibromide 13783-04-5 X     Titanium dichloride 10049-06-6 X     Titanium diiodide 13783-07-8 X     Titanium monoxide 12137-20-1 X     Titanium trichloride 7705-07-9 X     Tri- n -butylaluminum 1116-70-7 X     Triazido borine -- X     Tribromoborane 1024-33-4   X   Tribromosilane 7789-57-3 X     Tributyl phosphine 213-651-2 X     Tributylborane 122-56-5 X     Trichlorosilane 10025-78-2 X X   Triethyl aluminum 97-93-8 X     Triethyl aluminum etherate -- X     Triethyl bismuth 617-77-6 X     Triethyl diborane 62133-36-2 X     Triethyl indium 923-34-2 X     Triethyl tellurium -- X     Triethylantimony  617-85-6 X     Triethylborane 97-94-9 X     Triethylstibine 617-85-6 X     Trigermane 14691-44-2 X     Triisobutylaluminum 100-99-2 X     Trimethyl antimony  594-10-5 X X   Trimethyl arsine 593-88-4 X X   Trimethyl bismuth 593-91-9 X     Trimethyl gallium 1445-79-0 X X   Trimethyl indium 3385-78-2 X     Trimethyl phosphine 594-09-2 X     Trimethyl thallium 3003-15-4 X     Trimethylaluminum 75-24-1 X     Trimethylaluminum etherate --       Trimethylchlorosilane 75-77-4 X     Trinitroaniline 489-98-5     X Trinitroanisole 606-35-9     X Trinitrobenzene 99-35-4     X Trinitrobenzenesulfonic acid 2508-19-2     X Trinitrobenzoic acid 129-66-8     X Trinitrocresol 602-99-3     X Trinitronaphthalene 55810-17-8     X Trinitrophenol 88-89-1     X Trinitroresorcinol 82-71-3     X Trinitrotoluene 118-96-7     X Triphenyl aluminum 841-76-9 X     Triphenyl tungsten --       Tripropyl antimony 5613-69-4 X     Tripropyl boron 1116-61-6 X     Tripropyl indium 3015-98-3 X     Tripropylaluminum -- X     Tris(trifluoromethyl) phosphine 432-04-2 X     Tris(trimethyl silyl) phosphine 15573-38-3 X     Trisilane 7783-26-8 X     Trisilyl arsine 15100-34-6 X     Trisilyl phosphine 15110-33-5 X     Trisilylamine 13862-16-3 X X   Trisilylamine 13862-16-3 X     Trisulfur dinitrogen dioxide -- X     Trivinyl bismuth -- X     Trivinyl stibine -- X     Urea nitrate 124-47-0     X Zinc (powder or dust) 7440-66-6 X X   Zinc dimethyl 544-97-8 X     Zinc isoamyl 21261-07-4 X     Zinc isobutyl 126409-67-6 X     Zinc phosphide 1314-84-7   X   Zirconium 7440-67-7 X     Zirconium borohydride 12370-59-1 X     Zirconium carbonitride -- X     Zirconium dibromide -- X