Mercurous chloride

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mercurous chloride --> calomel

HgCl;mild mercury chloride; mercury monochloride, protochloride, or subchloride; has been used as an intestinal antiseptic and laxative; replaced by safer agents.

Synonym: mercurous chloride, sweet precipitate.

Origin: Mediev. L., fr. G. Kalos, beutiful, _ melas, black