Flammable solids are categorized under which UN hazard class?

Prepare for the IFSAC Hazardous Materials Exam. Use flashcards and multiple-choice questions. Each question is equipped with hints and explanations to enhance learning and ensure exam success.

Flammable solids are categorized under UN hazard Class 4. This classification includes solid materials that are easily ignitable and can contribute to the spread of fire. Flammable solids may include substances like matches, certain types of metal powders, and other materials that may ignite and burn when exposed to a flame or other ignition source.

This classification is important for transport and handling because it dictates specific safety measures and precautions to prevent accidents during handling, transportation, and storage. Class 4 is further divided into three divisions:

  • Division 4.1: Flammable solids

  • Division 4.2: Substances liable to spontaneous combustion

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

Understanding this classification helps emergency responders and safety personnel to identify the risks associated with these materials and respond appropriately in hazardous situations.

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