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Mercury sulfide

Mercury sulfide
Other names cinnabar, vermillion
CAS number 1344-48-5
Molecular formula HgS
Molar mass 232.66 g mol−1
Density 8.10 g cm−3
Melting point


Boiling point


Solubility in other solvents insoluble
Related Compounds
Other anions Mercury selenide; Mercury telluride; Cadmium sulfide
Except where noted otherwise, data are given for
materials in their standard state
(at 25 °C, 100 kPa)

Infobox disclaimer and references

Mercury sulfide, mercurous sulfide, or mercury(II) sulfide is a chemical compound composed of the chemical elements mercury and sulfur. It is represented by the chemical formula HgS. Because it is virtually insoluble in water, it isn't toxic (unlike most of the other mercury compounds).

Mercury sulfide occurs in two allotropes, most easily characterized by their color:

  • The red ore, cinnabar (α-HgS), is the form in which mercury is most commonly found in nature. The pigment vermilion can be extracted from it.
  • The black ore, metacinnabar (β-HgS), is less common. It is used in pigments and adopts the wurtzite crystal structure.

See also


    This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Mercury_sulfide". A list of authors is available in Wikipedia.
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