| Class | Name |
| 1 | Explosives 1.1, 1.2, 1.3, 1.4, 1.5, 1.6 |
| 2 | Gases (compressed, liquefied or dissolved under pressure) |
| 2.1 | Flammable gases |
| 2.2 | Non-flammable, Non-toxic compressed gases |
| 2.3 | Toxic gases |
| 3 | Flammable liquids |
| 3.1 | Low flashpoint group below -18° C |
| 3.2 | Intermediate flashpoint group of -18° C to and not including 23° C |
| 3.3 | High flashpoint of 23° C up to and including 61° C |
| 4.1 | Flammable solids |
| 4.2 | Substances liable to spontaneous combustion |
| 4.3 | Substances which in contact with water, emit flammable gases |
| 5.1 | Oxidising substances |
| 5.2 | Organic peroxides (Note: Some require secondary explosive labels) |
| 6.1 | Toxic substances (liquids and solids) |
| 6.2 | Infectious substances |
| 7 | Radioactive materials |
| 8 | Corrosives (liquids and solids) |
| 9 | Miscellaneous dangerous substances and articles |
