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Class 4: Flammable Solid; Substances liable to spontaneous
combustion; Substances which, in contact with water, emit
flammable gases

Class 4 is divided into 3 divisions.

Division 4.1: Flammable Solids, self-reactive substances and solid desensitized
explosive.

Hazard Label:


IMP Code: RFS

Division 4.2: Substances liable to spontaneous combustion

Hazard Label:


IMP Code: RSC

Division 4.3: Substances which, in contact with water, emit flammable gases

Hazard Label:



IMP Code: RFW