Tungsten(IV) sulfide
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| Tungsten(IV) sulfide | |
|---|---|
| Image:Tunsgten(IV) sulfide.jpg | |
| Other names | tungsten disulfide tungstite |
| Identifiers | |
| CAS number | [12138-09-9] |
| Properties | |
| Molecular formula | S2W |
| Molar mass | 247.98 g/mol |
| Appearance | blue-grey powder |
| Density | 7.500 g/cm3, solid |
| Melting point |
1250 °C (decomposes) |
| Boiling point |
decomp. |
| Hazards | |
| EU classification | not listed |
| NFPA 704 |
 1
1
0
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| Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) Infobox disclaimer and references |
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Tungsten(IV) sulfide is the chemical compound with the formula WS2. It occurs naturally as the mineral called tungstenite. This material is a component of certain catalysts used for hydrodesulfurization and hydrodenitrification.
WS2 adopts a layered structure related to MoS2, with W atoms situated in trigonal prismatic coordination sphere.
Contents |
[edit] Uses
[edit] Dry lubricant
It is also used as a lubricant in conjunction with other similar sulfides, e.g MoS2.
[edit] References
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[edit] External links
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