Hazardous Goods Classifications

International Maritime Dangerous Goods (IMDG) Codes

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

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

Class 2 — Gases: Compressed, Liquefied or Dissolved under Pressure

2.1 Flammable gases

2.2 Non-Flammable gases

2.3 Toxic gases

Class 3 — Flammable Liquids

Class 4 — Flammable Solids or Substances

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 (agents) by yielding oxygen increase the risk and intensity of fire

5.2 Organic peroxides, most will burn rapidly and are sensitive to impact or friction

Class 6 — Toxic and infectious Substances

6.1 Toxic substances

6.2 Infectious substances

Class 7 — Radioactive Substances

Class 8 — Corrosives

Class 9 — Miscellaneous dangerous substances and articles