HAZMAT Class 3 Flammable Liquids

According to the DGR, Class 3 includes the following types of substances:

• Flammable liquids
• Liquid desensitized explosives

Flammable liquids are liquids, mixtures of liquids, or liquids containing solids in solutions or suspension that give off a flammable vapor at temperatures of not more than 60° C (140° F) in a closed-cup test or not more than 65.6° C (150° F) in an open-cup test, also referred to as the flash point.

Liquid desensitized explosives are explosive substances that are dissolved or suspended in water or other liquid substances to form a homogeneous liquid mixture to suppress their explosive properties.

Primary Hazards

Class 3 substances may present fire or explosion hazards due to the following risks:

• May be easily ignited by heat, sparks, or flames.
• Vapors may form explosive mixtures with air.
• Vapors may travel to the source of ignition and then flash back.
• Containers may explode when heated.
• Inhalation or contact with skin may cause irritation or burning.
• May produce irritating, corrosive, or toxic gases.
• Vapors may cause dizziness or suffocation.
• May cause toxic effects if inhaled or absorbed through the skin.

To learn more about IATA DGR visit our IATA DGR Refresher Online Training web page.