IMCO Classes  
IMCO Class Description
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 Mass Explosion Hazard
Division 1.6 Extremely Insensitive Articles Which Do Not Have A Mass Explosion Hazard
Examples: Ammunition, Fireworks, Blasting Explosives
Class 2 Gases Compressed ,Liquified Or Dissolved Under Pressure.
Division 2.1 Flammable Gases
Division 2.2 Non-Flammable Gases.
Division 2.3 Toxic Gases
Examples Division 2.1
Cigarette Lighters, Refills For Gas Lighters, Acetylene, Ethylene , And Hydrogen Some Industry Use.
Division 2.2
Carbon Dioxide , Oxygen (For Medical And Industrial Use), Compressed Air, Freon Gas Used For Refrigeration And Air Conditioning ,Compressed Nitrogen And Argon For Welding.
Also, Liquid Oxygen And Liquid Nitrogen For Industrial Use.
Division 2.3
Chlorine (For Water Treatment And Ammonia (For Industrial Works).

Aerosols,As Pesticides,Air Fresheners, Aerosol Deodorants And Some Oven Cleaners Are Assigned To Division 2.1, 2.2 Or 2.3 Depending On Their Properties.
Class 3 Flammable Liquids
Division 3.1 Low Flash-Point Group Of Liquids(Flash-Point Below -18C. )
Division 3.2 Intermediate Flash-Point Group Of Liquids (Flash-Point Of - 18C.Up To But Not Include +23C.)
Division 3.3 High Flash-Point Group Of Liquids (Flash-Point Of +23C. Up To And Include +61C.)
Examples Petrol,Kerosene,Paints, Car Lacquers ,Chemical Solvents(petroleum Derivatives), Varnishes.
Class 4 Flammable Solids Or Substances
Division 4.1 Flammable Solids
Division 4.2 Substances Liable To Spontaneous Combustion
Division 4.3 Substances Which In Contact With Water Emit Flammable Gases.
Examples Matches And Sulphur Powder.
Division 4.3
Calcium Carbide - Used To Produce Acetylene Gas.
Class 5 Oxidizing Substances (Agents)And Organic Peroxides.
Division 5.1 Oxidizing Substances (Agents) Yielding Oxygen Increases The Risk And Intensity Of Fire.
Division 5.2 Organic Peroxides-Most Will Burn Rapidly And Are Sensitive To Impact Or Friction.
Examples Division 5.1
Pool Chlorine , Some Fertilisers.
Class 6 Toxic And Infectious Substances
Division 6.1 Toxic Substances.
Division 6.2 Infectious Substances.
Examples Division 6.1
Some Pesticides , Industry Products Such As Cyanide Products.
Division 6.2
Waste Medical Products For Example.
Class 7 Radioactive Substances
Examples Substances Used In Industrial ,Medical Or Scientific Purposes.
Class 8 Corrosives
Examples Acids As Glacial Acetic Acid, Hydrochloric, Sulphuric And Nitric Acid, Caustic Soda And Caustic Potash
Class 9 Miscellaneous Dangerous Substances And Articles.
Examples A WideRange Of Substances As Asbestos,Some Fertilisers And Environmentally Hazardous Products.
MHB Materials Hazardous Only In Bulk.
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