What are the classification of dangerous goods as per IMDG code ?

Classes of dangerous cargo are:
Class 1: Explosives

Division 1.1: substances and articles which have a mass explosion hazard
Division 1.2: substances and articles which have a projection hazard but not a mass explosion hazard
Division 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
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: Flammable solids; substances liable to spontaneous combustion; substances which, in contact with water, emit flammable gases

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: 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

The numerical order of the classes and divisions is not that of the degree of danger 

Class 10: Marine pollutants

Marine pollutants shall be classified in accordance with chapter 2.9.3 in IMDG Code.

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Note :-

The IMDG code is a very much living document and gets amended from time to time (every 2 years). In the last decade major changes were made to Ems-emergency medical schedule, MFAG and INF codes (carriage of nuclear materials)
IMDG Code means the International Maritime Dangerous Goods (IMDG) Code adopted by the Maritime Safety Committee of the Organization by resolution MSC.122(75)
The objective of the IMDG Code is to enhance the safe carriage of dangerous goods while facilitating the free unrestricted movement of such goods and prevent pollution to the environment

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Amit Sharma

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