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ExplosivesSubstances capable of causing an explosion under certain conditions.Dynamite, fireworks, blasting caps
GasesSubstances that are gases at 20 Celsius or less and a pressure of 101.3 kPa or less.Propane, methane, chlorine gas
Flammable LiquidsLiquids with a flash point of not more than 60 Celsius.Gasoline, diesel fuel, alcohol
Flammable SolidsSolid materials that can ignite and burn easily.Matches, fireworks, magnesium
Oxidizing Substances and Organic PeroxidesSubstances that provide oxygen and can cause or contribute to the combustion of other materials.Hydrogen peroxide, potassium permanganate
Toxic and Infectious SubstancesSubstances that are toxic and infectious and pose health hazards.Pesticides, heavy metals, bacteria
Radioactive MaterialsSubstances that emit ionizing radiation.Radioactive isotopes, nuclear waste
Corrosive SubstancesSubstances that can cause severe damage when in contact with living tissue, other materials, or the environment.Sulfuric acid, sodium hydroxide, hydrochloric acid
Miscellaneous Dangerous GoodsSubstances and articles that present dangers
During transportation but do not fit into any of the other classes
Asbestos, lithium batteries, environmentally hazardous substances