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Names | |
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IUPAC name
Mercury sulfide
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Other names | |
Identifiers | |
3D model (JSmol)
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ECHA InfoCard | 100.014.270 |
EC Number |
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PubChem CID
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UNII | |
UN number | 2025 |
CompTox Dashboard (EPA)
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Properties | |
HgS | |
Molar mass | 232.66 g/mol |
Density | 8.10 g/cm3 |
Melting point | 580 °C (1,076 °F; 853 K) decomposes |
insoluble | |
Band gap | 2.1 eV (direct, α-HgS) [1] |
−55.4·10−6 cm3/mol | |
Refractive index (nD)
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w=2.905, e=3.256, bire=0.3510 (α-HgS) [2] |
Thermochemistry | |
Std molar
entropy (S⦵298) |
78 J·mol−1·K−1[3] |
Std enthalpy of
formation (ΔfH⦵298) |
−58 kJ·mol−1[3] |
Hazards | |
GHS labelling: | |
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Danger | |
H300, H310, H317, H330, H373, H410 | |
P261, P272, P280, P302+P352, P321, P333+P313, P363, P501 | |
NFPA 704 (fire diamond) | |
Flash point | Non-flammable |
Safety data sheet (SDS) | Fisher Scientific |
Related compounds | |
Other anions
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Mercury oxide mercury selenide mercury telluride |
Other cations
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Zinc sulfide cadmium sulfide |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Mercury 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. It is virtually insoluble in water.[4]