Class 1 – Explosives

Division 1.1 – Substances and articles which have a mass explosion hazard
Division 1.2 – Substances and articles which have a projection hazard but not a mass explosion hazard
Division 1.3 – Substances and articles which have a fire hazard and either a minor blast hazard or a minor projection hazard or both
Division 1.4 – Substances and articles which present no significant hazard; only a small hazard in the event of ignition or initiation during transport with any effects largely confined to the package
Division 1.5 – Very insensitive substances which have a mass explosion hazard
Division 1.6 – Extremely insensitive articles which do not have a mass explosion hazard

Class 2 – Gases

Division 2.1 – Flammable gas
Division 2.2 – Non-flammable gas

Class 3 – Flammable liquids

Class 4 – Other flammables

Division 4.1 – Flammable solids
Division 4.2 – Substances liable to spontaneous combustion
Division 4.3 – Substances which, in contact with water, emit flammable gases

Class 5

Division 5.1 – Oxidising agents
Division 5.2 – Organic peroxides

Class 6

Division 6.1 – Toxic substances

Class 8 – Corrosives

Class 9 – Miscellaneous

Class 9 includes items such as automotive airbags, lithium ion batteries, lithium metal batteries and environmentally hazardous substances which don’t fit into any of the other classes.