Class 1
Explosives
Class 2
Gases
Class 3
Flammable and Combustible Liquids
Class 4
Flammable Solids
Class 5
Oxidizers
Class 6
Poisonous Materials
Class 7
Radioactive Materials
Class 8
Corrosive Materials
Class 9
Miscellaneous Hazardous Materials
DOT Hazard Class System
Class 1 - Explosives
Class 2 - Gasses
Class 3 - Flammable Liquids
Class 4 - Flammable Solids
Class 5 - Oxidizing Substances
Class 6 - Toxic
Class 7 - Radioactive Materials
Class 8 - Corrosive Substances
Class 9 - Miscellaneous dangerous goods/hazardous materials and articles