Cobalt

CAS Number: 7440-48-4. Cobalt is a naturally occurring element
found in rocks, soil, water, plants, and animals. There are non
radioactive and radioactive forms of cobalt. Non-radioactive
cobalt, referred to as stable cobalt, is used to produce metal
alloys used in the manufacture of aircraft engines, magnets,
grinding and cutting tools, artificial hip and knee joints.
Cobalt compounds are also used to color glass, ceramics and
paints, and used as a drier for porcelein enamel and paints.
Cobalt enters the environment from natural sources and the
burning of coal or oil or the production of cobalt alloys.
Chemical formula = Co. Molecular weight = 58.93 g/mol.