There are nine classes of dangerous goods:
Class 1- Explosives
- Class 2- Gases
- Class 3- Flammable Liquids
- Class 4- Flammable Solids
- Class 5- Oxidizers and Organic Peroxides
- Class 6- Toxic and Infectious Substances
- Class 7- Radioactive Materials
- Class 8- Corrosive
- Class 9- Misc. Products, Substances or Organisms
