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Class 4

Flammable Solids

The class is subdivided in three different divisions, as they can be ignited under different circumstances.
4.1 - will catch fire trough friction or heat.
4.2 - does not need heat or friction, mere contact with air or sunlight can cause combustion. These are not ordinary substances a normal person will send as a present, unaware of DG regulations. These are offered by specialized companies that are more (hopefully) aware of the regulations.
4.3 - are the dangerous when wet substances, which only burn when in contact with water. Also here we have specific chemicals in mind

 

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Sub-Divisions

4.1 Flammable Solids
4.2 Spontaneously Combustible
4.3 Dangerous When Wet




Common Examples

4.1 - Matches, Magnesium

4.2 - White phosphorus, Ferrocerium (used in fire-steel), flint

4.3 - Lithium, Sodium, Carbid (used in mining)

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