Class 01: Explosives and unstable explosives.
Class 02: Flammable gases and aerosols.
Class 03: Oxidizing gases, liquids, and solids.
Class 04: Gases under pressure.
Class 05: Flammable liquids.
Class 06: Flammable solids and self-reactive substances.
Class 07: Pyrophoric liquids and solids.
Class 08: Self-heating substances and mixtures.
Class 09: Substances that emit flammable gases in contact with water.
Globally Harmonized System (GHS) hazard classes for physical and health risks.