| IUPAC name
| Other names
|Molar mass||232.66 g/mol|
|Appearance|| Red solid (α-HgS)|
Black solid (β-HgS)
|Melting point||580 °C (1,076 °F; 853 K) (decomposes)|
|Solubility||Insoluble in organic solvents|
|Vapor pressure||~0 mmHg|
Std enthalpy of
|Safety data sheet||Sigma-Aldrich|
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Mercury sulfide, also known as mercury(II) sulfide or mercuric sulfide is a chemical compound composed with the formula HgS. It occurs naturally as the mineral cinnabar .
Mercury sulfide is resistant to the attack of most reagents, such as acids and bases.
- HgS + O2 → Hg + SO2
Mercury sulfide is a red or black solid, virtually insoluble in water and all solvents.
Cinnabar can be purchased from various mineral suppliers. In some countries its sale may be regulated.
- Mineral collecting
- Make elemental mercury (VERY DANGEROUS)
Cinnabar is toxic and should be handled with proper protection.
In closed containers.
Should be take to disposal centers.