IMO Class
Class 1: Explosives
1.1:
Substances and articles which have a mass explosion hazard
1.2:
Substances and articles which have a projection hazard but not a mass explosion hazard
1.3:
Substances and articles which have a fire hazard and either a minor blast hazard or a minor projection hazard or both, but not a mass explosion hazard
1.4:
Substances and articles which present no significant hazard
1.5:
Very insensitive substances which have a mass explosion hazard
1.6:
Extremely insensitive articles which do not have a mass explosion hazard
Class 2: Gases
2.1:
Flammable gases
2.2:
Non-flammable, non-toxic gases
2.3:
Toxic gases
Class 3: Flammable Liquids
3:
Flammable Liquids
Class 4: Flammable Solids
Substances Liable to Spontaneous Combustion; Substances that, on Contact with Water, Emit Flammable Gases
4.1:
Flammable solids
4.2:
Substances liable to spontaneous combustion
4.3:
Substances which, in contact with water, emit flammable gases
Class 5: Oxidizing Substances and Organic Peroxides
5.1:
Oxidizing substances
5.2:
Organic peroxides
Class 6: Toxic and Infectious Substances
6.1:
Toxic substances
6.2:
Infectious substances
Class 7: Radioactive
Material
7:
Radioactive material
Class 8: Corrosive
Substances
8:
Corrosive substances
Class 9: Miscellaneous Dangerous Substances and Articles
9:
Miscellaneous dangerous substances and articles