US
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Class
Class 1 - Explosive
Division 1.1
Substances and articles which have a massexplosion hazard
Division 1.2
Substances and articles which have a projection hazard but not 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, but a mass explosion hazard
Division 1.4
Substances and articles which present no significant hazard
Division 1.5
Very insensitice 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 gases
Division 2.2
Non-Flammable, Non-Toxic gases
Division 2.3
Toxic gases
Class 3 - Flammable Liquids
Class 4 - Flammable Solids
Substances liable to spontaneous combustion / Substances which, in contact with water, emit flammable gases
Division 4.1
Flammable solids, self-reactive substances and solid desensitized explosives
Division 4.2
Substances liable to spontabneous combustion
Division 4.3
Substance which, in contact with water, emit flammable gases
Class 5 - Oxidizing substances (agents) and Organic Peroxides
Division 5.1
Oxidizing substances
Division 5.2
Organic peroxides
Class 6 - Toxic and Infections Substances
Division 6.1
Toxic substances
Division 6.2
Infectious substances
Class 7 - Radioactive materials
Class 8 - Corrosive substances
Class 9 - Miscellaneous dangerous substances and articles