hazardous substances
solids, liquids, or gases that can harm people, other living organisms, property, or the environment
fire accelerant
substance that promotes development of a fire
hazardous waste
ignitable, reactive, corrosive and/or toxic unwanted or unusable materials
explosive chemicals
reactive substance that contains a great amount of potential energy that can produce an explosion
water-reactive substance
substance that readily reacts with water in a potentially hazardous way