Class 4 Dangerous Goods

Substances Liable To Spontaneous Combustion; Substances Which Emit Flammable Gases When In Contact With Water Dangerous Goods which are classed flammable solids are materials which, under conditions encountered in transport, are readily combustible or may cause or contribute to fire through friction, self-reactive substances which are liable to undergo a strongly exothermic reaction or solid desensitised explosives.Also included are substances which are liable to spontaneous heating under normal transport conditions, or to heating up in contact with air, and are consequently liable to catch fire and substances which emit flammable gases or become spontaneously flammable when in contact with water.

Sub-Divisions
4.1: Flammable solids.
4.2: Substances liable to spontaneous combustion.4.3: Substances which, in contact with water, emit flammable gases.

Reason For Regulation
Flammable solids are capable of posing serious hazards due to their volatility, combustibility and potential in causing or propagating severe conflagrations.

Commonly Transported Flammable Solids; Spontaneous Combustibles And ‘Dangerous When Wet’ MaterialsAlkali metals
Metal powders
Aluminium phosphide
Sodium batteries
Sodium cells
Firelighters
Matches
Calcium carbide
Camphor
Carbon
Activated carbon
Celluloid
Cerium
Copra
Seed cake
Oily cotton waste
Desensitised explosives
Oily fabrics
Oily fibres
Ferrocerium
Iron oxide (spent)
Iron sponge/direct-reduced iron (spent)
Metaldehyde
Naphthalene
Nitrocellulose
Phosphorus
Sulphur


Classifications of all dangerous goods can be found HERE

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