Physical hazards group: based on the physical or chemical properties of the product – such as flammability, reactivity, or corrosivity to metals.
- Flammable gases
- Flammable aerosols
- Oxidizing gases
- Gases under pressure
- Flammable liquid
- Flammable solids
- Self-reactive
- Pyrophoric liquids
- Pyrophoric solids
- Pyrophoric gases
- Self-heating substance and mixtures
- Substance and mixtures which, in contact with water emit flammable gases
- Oxidizing liquids
- Organic peroxides
- Corrosive to metals
- Combustible dusts
- Simple asphyxiates
- Physical hazard not otherwise classified