The metal improves the mechanical, fabrication, and welding characteristics of aluminum when used as an alloying agent. Magnesium is used in producing nodular graphite in cast iron, and is used as an additive to conventional propellants. It is also used as a reducing agent in the production of pure uranium and other metals from their salts. Dead-burned magnesite is employed for refractory purposes such as brick and liners in furnaces and converters. Magnesium is an important element in both plant and animal life.
Chlorophylls are magnesium-centered porphyrins.
Great care should be taken in handling magnesium metal, especially in the finely divided state, as serious fires can occur. Water should not be used on burning magnesium or on magnesium fires. Natural magnesium contains three isotopes. Twelve other isotopes are recognized. The incidence of cancer mortality was studied in a cohort of 2391 male workers producing magnesium metal.