C Research on Mercury
2. Variety of Mercury

These are various mercury compounds.
Metallic mercury
(Hg0)
The most familiar mercury used in thermometer. Inhalation of its vapor causes damage to lung, kidney and brain.
Mercuric oxide
(HgO)
Almost insoluble in water. Used as a topical antiseptic. Mercuric sulfide
Mercuric sulphide
(HgS)
Insoluble in water. Used as a red pigment in ancient times. Most mercury in natural environment exists as this form.
Mercuric chloride
(HgCl2)
Often used in toxicology research. Given to experimental animals by injection due to poor absorption from the gastric tube. Causes severe renal failure.
Methylmercuric chloride
(CH3HgCl)
Cause of Minamata Disease. On absorption, it is widely found tissues