Zinc

CAS Number: 7440-66-6. A bluish, pale gray metal that is an
essential nutrient in mammals. Thin layers of zinc are used to
galvanize iron or steel, which protect the underlying metal from
rusting. Zinc is also used in brass, bronze and nickel alloys,
and can be found in solder, cosmetics and pigments. Chemical
formula = Zn. Molecular weight = 65.409 g/mol.