Class 4 - Flammable Solids


Class 4 – Flammable Solids

Substances liable to spontaneous combustion

Substances which, in contact with water, emit flammable gases

Class 4 is divided into three divisions as follows:

Division 4.1: Flammable solids that are readily combustible or may contribute to fire through friction; self-reactive substances with strongly exothermic reactions; solid desensitized explosives that may explode if not sufficiently diluted.

Division 4.2: Substances liable to spontaneous combustion under normal transport conditions, or heating up in contact with air, and then catching fire.

Division 4.3: Substances that, in contact with water, become spontaneously flammable or emit dangerous quantities of flammable gases.

Class 4 substances are identified by the Class 4 labels and the Class 4 designation in any Safety Data Sheet.

Division 4.1

Division 4.1: Flammable Solid

Division 4.2

Division 4.2: Substances Liable To Spontaneous Combustion

Division 4.3

Division 4.3: Substances Which, In Contact With Water, Emit Flammable Gases

Refer to:

    • Local Regulations
    • Australian Dangerous Goods (ADG) Code or IMDG Code or IATA
    • AS 1216: Class labels for dangerous goods
    • AS/NZS 4745: Code of practice for handling combustible dusts
    • AS/NZS 5026: The storage and handling of Class 4 dangerous goods
    • Purchase the Australian Standards
    • Safety Data Sheets

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