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mercuric sulfide
mercuric sulfiden. A poisonous compound, HgS, having two forms:a. Black mercuric sulfide, a black powder obtained from mercury salts or by the reaction of mercury with sulfur, used as a pigment.b. Red mercuric sulfide, a bright scarlet powder occurring naturally or prepared by heating mercury with sulfur, that is sensitive to heat and light and is used as a pigment. Also called cinnabar, vermilion.mercuric sulfide
mercuric sulfide[mər′kyu̇r·ik ′səl‚fīd] (inorganic chemistry) HgS The black variety is a poisonous powder; insoluble in water, alcohol, and nitric acid, soluble in sodium sulfide solution; sublimes at 583°C; used as a pigment. Also known as black mercury sulfide; ethiops mineral. The red variety is a poisonous powder; insoluble in water and alcohol; sublimes at 446°C; used as a medicine and pigment. Also known as Chinese vermilion; quicksilver vermilion; red mercury sulfide; vermilion. ThesaurusSeecinnabar |