UN Class Numbers for dangerous goods

Class 1 Explosive

1.1 Substances with a mass explosion hazard

1.2 Substances which present a projection hazard but no mass explosion hazard

1.3 Substances which present both a fire hazard and a minor blast or projection hazard (or both) but not a mass explosion hazard

1.4 Substances which present only a slight risk of explosion

1.5 Very insensitive substances with a mass explosion hazard

1.6 Very insensitive articles with no 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

Class 4 Flammable solids

4.1 Flammable solids, self-reactive substances and solid desensitized explosives

4.2 Substances liable to spontaneous combustion

4.3 Substances which, in contact with water, release 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

Class 8 Corrosive substances

Class 9 Miscellaneous dangerous substances and articles


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