Zinc sulfide
Zinc sulfide (or zinc sulphide) is an inorganic compound with the chemical formula of ZnS. This is the main form of zinc found in nature, where it mainly occurs as the mineral sphalerite. Although this mineral is usually black because of various impurities, the pure material is white, and it is widely used as a pigment. In its dense synthetic form, zinc sulfide can be transparent, and it is used as a window for visible optics and infrared optics.
ZnS powders containing different concentrations of sulfur vacancies | |
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3D model (JSmol) |
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| ECHA InfoCard | 100.013.866 |
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CompTox Dashboard (EPA) |
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| Properties | |
| ZnS | |
| Molar mass | 97.474 g/mol |
| Density | 4.090 g/cm3 |
| Melting point | 1,850 °C (3,360 °F; 2,120 K) (sublime) |
| negligible | |
| Band gap | 3.54 eV (cubic, 300 K) 3.91 eV (hexagonal, 300 K) |
Refractive index (nD) |
2.3677 |
| Structure | |
| see text | |
| Tetrahedral (Zn2+) Tetrahedral (S2−) | |
| Thermochemistry | |
Std enthalpy of formation (ΔfH⦵298) |
−204.6 kJ/mol |
| Hazards | |
| NFPA 704 (fire diamond) | |
| Flash point | Non-flammable |
| Safety data sheet (SDS) | ICSC 1627 |
| Related compounds | |
Other anions |
Zinc oxide Zinc selenide Zinc telluride |
Other cations |
Cadmium sulfide Mercury sulfide |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references | |
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