Class 1 - Explosives
Division 1.1 Explosives which have a mass explosion hazard
Division 1.2 Explosives which have a projection hazard but not a mass explosion hazard
Division 1.3 Explosives which have a fire hazard and either a minor blast hazard or a minor projection hazard or both, but not a mass explosion hazard
Division 1.4 Explosives which present no significant blast hazard
Division 1.5 Very insensitive explosives with a mass explosion hazard
Division 1.6 Extremely insensitive articles which do not have a mass explosion hazard
Class 2 - Gasses
Division 2.1 Flammable gases
Division 2.2 Non-flammable, non-toxic* gases
Division 2.3 Toxic* gases
Class 3 - Flammable liquids (and Combustible liquids [U.S.])
Class 4 - Flammable solids; Substances liable to spontaneous combustion; Substances which, on contact with water, emit flammable gases
Division 4.1 Flammable solids, self-reactive substances and solid desensitized explosives
Division 4.2 Substances liable to spontaneous combustion
Division 4.3 Substances which in contact with water emit flammable gases
Class 5 - Oxidizing substances and Organic peroxides
Division 5.1 Oxidizing substances
Division 5.2 Organic peroxides
Class 6 - Toxic* substances and Infectious substances
Division 6.1 Toxic* substances
Division 6.2 Infectious substances
Class 7 - Radioactive materials
Class 8 - Corrosive substances
Class 9 - Miscellaneous dangerous goods/hazardous materials and articles
Access an expanded guide to the DOT Hazmat Classes
Access the Emergency Response Guide (ERG) and App
*The words “poison” or “poisonous” are synonymous with the word “toxic”.[1]
