EXAMPLES OF CHEMICAL HAZARDS
COMPRESSED GASES (CLASS 2)
Flammable: Acetylene, carbon monoxide, ethane, ethylene, hydrogen, methane
Oxidizing: Oxygen, ozone, oxides of nitrogen, chlorine, fluorine {chlorine and fluorine reacts with flammables similarly to that of
oxygen
Corrosive: Ammonia, hydrogen chloride
Highly Toxic: Arsine, cyanogen, fluorine, germane, hydrogen cyanide, nitric oxide, phosphine, hydrogen selenide
Inert: Argon, helium, krypton, neon, nitrogen, xenon
Pyrophoric: Diborane, dichloroborane, phosphine, silane
Unstable: Butadiene, ethylene oxide, vinyl chloride, methyl acetylene
FLAMMABLE &, COMBUSTIBLE (CLASS 3)
Flammables:
Class IA liquids: Flash Point <73°F (23°C) and Boiling Point at or below 100°F (38°C)
Class IB liquids: Flash Point <73°F (23°C) and Boiling Point at or above 100°F (38°C)
Class IC liquids: Flash Point at or above 73°F (23°C) and below 100°F (38°C)
Combustibles:
Class II liquids: Flash points at or above 100°F (38°C) and below 140°F (60°C)
Class IIIA liquids: Flash point at or about 140°F (60°C) and below 200°F (93°C)
Class IIIB liquids: Flash point at or above 200°F (93°C)
REACTIVES (CLASS 4)
Flammable solids
Organic Solids: Camphor, Cellulose Nitrate, Naphthalene
Inorganic Solids: Decaborane, Lithium Amide, Phosphorus Heptasulfide, Phosphorus sesquisulfide, Potassium Sulfide,
Anhydrous Sodium Sulfide, Sulfur
Combustible Metals: (Except Dusts and Powders) Cesium, Magnesium, Zirconium
Water-reactive material
Aluminum alkyls, bromine petafluoride, bromine trifluoride, chlorodiethylaluminium, diethylzinc, calcium carbide, calcium metal,
lithium hydride, methyldichlorosilane, potassium metal, potassium peroxide, sodium metal, sodium peroxide, sulfuric acid,
trichlorosilane, acetyl chloride, sodium hydroxide, chlorosulfonic acid and titanium tetrachloride
Unstable materials
Acetyl peroxide, dibutyl peroxide, dinitrobenzene, ethyl nitrate, peroxyacetic acid, picric acid, hydrogen peroxide (>52%),
hydroxylamine, nitromethane, paranitroaniline, perchloric acid, tertafluoroethylene monomer, acrolein, acrylic acid, hydrazine,
methacrylic acid, sodium perchlorate, styrene, vinyl acetate, acetic acid, hydrogen peroxide (35-52%), paraldehyde,
tetrahydrofuran
REDUCERS (CLASS 5)
Oxidizers
Gases: Oxygen, Ozone, Oxides of Nitrogen, Fluorine, Chlorine
Liquids: Hydrogen Peroxide, Nitric Acid, Perchloric Acid
Solids: Chlorates, Chromates, Chromium trioxide, Iodine, Nitrates, Nitrites, Perchlorates, Peroxides
Organic Peroxides
Dibenzoyl peroxide, butanone peroxide, acetyl peroxide, diacetyl peroxide, butyl peroxide
Organic Peroxides contain a double oxygen or peroxy (-0-0) group. Some are prone to explosive decomposition.
TOXIC (CLASS 6)
Highly toxic material
Gases: Arsine, cyanogen, diborane, fluorine, germane, hydrogen cyanide, nitric oxide, nitrogen dioxide, ozone, phosphine,
hydrogen selenide, stibine.
Liquids: Acrolein, 2-chloroethanol, hydrazine, hydrocyanic acid, 2-methylaziridine, acrylonitrile, methyl isocyanate, nicotine,
tetranitromethane, tetraethylstannane
Solids: Phenyl mercury, 4-aminopyridine, arsenic pentoxide, arsenic trioxide, calcium cyanide, 2-chloroacetophenone, aflatoxin 8,
decaborane(14), mercury II bromide, mercury II chloride, pentachlorophenol, methyl parathion, white phosphorus, sodium azide
Toxic material
Gases: Boron trichloride, boron trifluoride, chlorine, chlorine trifluoride, hydrogen fluoride, hydrogen sulfide, phosgene, silicon
tetrafluoride
Liquids: Acrylonitrile, allyl alcohol, alpha-chlorotoluene, aniline, l-chloro-2, 3-expoxypropane, ethyl chloroformate, 3-chloropropene,
o-cresol, furfuryl alcohol
Solids: Acrylamide, barium chloride, barium nitrate, benzidine, p-benzoquinone, beryllium chloride, cadmium chloride, cadmium
oxide, chloroacetic acid, chlorophenylmercury, chromium (VI) oxide, potassium fluoride, potassium hydroxide, selenium (IV)
disulfide, sodium fluoride
CORROSIVE (CLASS 8)
Acids: Chromic, formic, hydrochloric (>15%), hydrofluoric, nitric, perchloric, sulfuric
Bases: Ammonium hydroxide, calcium hydroxide, potassium hydroxide, sodium hydroxide, potassium carbonate . Others:
Bromine, chlorine, fluorine, iodine, ammonia