With these definitions in mind it is possible to divide ignitable materials into four major classes. A flammable solid is one that can ignite from friction or from heat remaining from its manufacture, or which may cause a serious hazard if ignited.
With these definitions in mind it is possible to divide ignitable materials intofour major classes. A flammable solid is one that can ignite from friction or fromheat remaining from its manufacture, or which may cause a serious hazard if ignited.