Heavy metal salts such as lead acetate, mercuric chloride, copper sulfate and silver nitrate are all precipitants in protein. Metal salt is the raw material for making fireworks. Flame reaction with some salts is used in fireworks, which can emit various colors at high temperature. In addition, there are industrial uses, military uses, medical technology and other uses.

Heavy metal salts such as lead acetate, mercuric chloride, copper sulfate and silver nitrate are all precipitants in protein. Metal salt is the raw material for making fireworks. Flame reaction with some salts is used in fireworks, which can emit various colors at high temperature. In addition, there are industrial uses, military uses, medical technology and other uses.