Magnesium powder (magnesiumpowder), silver metallic powder, active metal, wet flammable items. Produce strong white light and is released by burning hot. With water or moisture release hydrogen, violent reaction heat in great quantities, cause the combustion or explosion. Chlorine, bromine, iodine, sulfur, phosphorus, arsenic and oxidant violent reaction, combustion and explosion danger. Magnesium powder is mainly used as a reductant, flash powder, lead alloy, metallurgy as to sulfur agent (as to sulfur agent material in the metallurgical industry, magnesium powder particle external wrapped in a layer of passivation agent, to prevent the oxidation of magnesium powder), also used in organic synthesis, lighting, etc