Flammable solids are classified under which number class?

Flammable solids are classified under Class 4 in the context of hazardous materials. This classification is important for understanding the risks associated with transporting and handling such materials. Class 4 is specifically designated for materials that can ignite easily and are capable of posing a fire hazard when in contact with sources of ignition.

These substances can include a wide range of materials, including certain metals, like magnesium, as well as organic compounds that can burn readily. Ensuring proper handling and storage of flammable solids is crucial to minimize the risk of fire accidents.

The other classes, such as Class 1, typically include explosives; Class 2 encompasses gases, both flammable and non-flammable; and Class 5 includes oxidizers, which can promote combustion but do not themselves necessarily catch fire easily. Therefore, understanding that flammable solids fall under Class 4 helps in applying the correct safety and handling measures necessary for those materials.