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Class or division represents the main risk posed by the dangerous goods. There are total 15 predominant classes and divisions which are listed below
- Class 1 Explosives
- Class 2.1 Flammable Gases
- Class 2.2 non-flammable, non-toxic gases
- Class 2.3 toxic gases
- Class 3 Flammable liquids
- Class 4.1 flammable solids, self-reactive substances and solid desensitized Explosives
- Class 4.2 substances liable to spontaneous combustion
- Class 4.3 substances which, in contact with water, emit flammable gases
- Class 5.1 oxidizing substances
- Class 5.2 organic peroxides
- Class 6.1 toxic substances
- Class 6.2 infectious substances
- Class 7 Radioactive material
- Class 8 Corrosive substances
15. Class 9 Miscellaneous dangerous substances and articles
Some of the substances have multiple hazards.
Ethanol is a flammable liquid listed under UN 1170, ETHANOL, and Class 3
Methanol is a flammable liquid which is also toxic listed under UN 1230, METHANOL, Class 3, and Subsidiary Risk 6.1
Ethanol has only one risk, flammability
Methanol has two risks, Main risk = Flammability & Subsidiary risk = toxicity
To know more about classification procedures and risks refer chapter 2.0 & 2.x of IMDG Code for respective classes.
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