Classifications are as follows:
Class 1: Explosive substances
Class 2: Gases
Class 3: Flammable liquids
Class 4.1: Flammable solids
Class 4.2: Substances liable to spontaneous combustion
Class 4.3: Substances which, in contact with water, emit flammable gases
Class 5.1: Oxidizing substances Class 5.2: Organic peroxides
Class 6.1: Toxic substances
Class 6.2: Infectious substances
Class 7: Radioactive substances
Class 8: Corrosive (acidic) substances
Class 9: Miscellaneous dangerous substances