Materials That Use the Explosive Symbol


 
1. Explosives are materials which release a tremendous amount of energy in the form of heat, light and expanding pressure within a very short period of time. 
2. Water Reactives react with water and may explode, or they may release a gas which is flammable.
3. Unstable Reactives are chemicals that can react or can become self-reactive when subjected to shock, pressure or temperature.