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Classes of Dangerous Goods
Dangerous goods for transport are divided into 9 classes depending upon the primary hazard they represent. Some classes are further subdivided into hazard divisions to allow more specific classification.
Class 1: Explosives
Division 1.1: Substances and articles that have a mass explosion hazard
  Division 1.2: Substances and articles that have a projection hazard
  Division 1.3: Substances and articles that have a fire hazard and either a minor blast hazard or a minor projection hazard or both
  Division 1.4: Substances and articles which present no significant hazard
Division 1.5: Very insensitive substances which have a mass explosion hazard
Division 1.6: Extremely insensitive articles which do not have a mass explosion hazard
Class 2: Gases
Class 2.1: Flammable gases
Class 2.2: Non-flammable, non-toxic gases
Class 2.3: Toxic gases
Class 3: Flammable liquids
Class 4: Other flammable materials
Class 4.1: Flammable solids, self-reactive substances and desensitized explosives
Class 4.2: Substances liable to spontaneous combustion
Class 4.3: Substances which, in contact with water, emit flammable gas
Class 5: Oxidizing substances and organic peroxides
Class 5.1: Oxidizing substances
Class 5.2: Organic peroxides
Class 6:Toxic and infectious substances
Class 6.1: Toxic substances
Class 6.2: Infectious substances
Class 7: Radioactive material
Class 8: Corrosive substances
Class 9: Miscellaneous dangerous substances and articles

Danger Labels
Labels of Class
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Labels of Class
2
Labels of Class
3
Labels of Class
4
Labels of Class
5
Labels of Class
6
Labels of Class
7
Labels of Class
8
Labels of Class
9

Subsidiary Risk

Many dangerous goods present more than one hazard. In these cases the primary hazard governs the allocation of Class and the other hazard(s) are referred to as subsidiary hazards.

For Example

Ethanol (Ethyl Alcohol), is flammable

whereas

Methanol (Methyl Alcohol) is both flammable and toxic

 

 


 

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