2.3 Toxic gas
Class 3: Flammable liquids (no divisions)
Class 4: Flammable solids
Flammable solid
1.1 Substances liable to spontaneous combustion
1.2 Substances which, in contact with water, emit flammable gas
Class 5: Oxidizing substances and organic peroxides
5.1 Oxidizer
5.2 Organic peroxide
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