 
| Classification of Dangerous Goods | 
Dangerous goods are classified as follows irrespective of carrier:
| Class | Meaning | 
|---|---|
| 1 | Explosive substances | 
| 2 | Gases | 
| 3 | Flammable liquids | 
| 4.1 | Flammable solids | 
| 4.2 | Spontaneously flammable solids | 
| 4.3 | Substances which form flammable gases in contact with water | 
| 5.1 | Substances which promote combustion (oxidants) | 
| 5.2 | Organic peroxides | 
| 6.1 | Toxic substances | 
| 6.2 | Infectious substances | 
| 7 | Radioactive substances | 
| 8 | Corrosive substances | 
| 9 | Various hazardous substances |