Tungsten(IV) sulfide
5081146
224969373
2008-07-11T06:34:27Z
Old Moonraker
233102
Reverted 2 edits by [[Special:Contributions/12.226.73.132|12.226.73.132]]; [[WP:SPAM|commercial link]]. ([[WP:TW|TW]])
{{Chembox new
| Name = Tungsten(IV) sulfide
| ImageFile = Tunsgten(IV)_sulfide.jpg
<!-- | ImageSize = 200px -->
| ImageName = Tungsten(IV) sulfide
| OtherNames = tungsten disulfide<br />tungstite
| Section1 = {{Chembox Identifiers
| CASNo = 12138-09-9
}}
| Section2 = {{Chembox Properties
| Formula = S<sub>2</sub>W
| MolarMass = 247.98 g/mol
| Appearance = blue-grey powder
| Density = 7.500 g/cm<sup>3</sup>, solid
| MeltingPt = 1250 °C (decomposes)
| BoilingPt = decomp.
}}
| Section7 = {{Chembox Hazards
| EUClass = not listed
| NFPA-H = 1
| NFPA-R = 0
| NFPA-F = 1
}}
}}
'''Tungsten(IV) sulfide''' is the [[chemical compound]] with the formula [[Tungsten|W]][[Sulfur|S<sub>2</sub>]]. It occurs naturally as the mineral called tungstenite. This material is a component of certain catalysts used for [[hydrodesulfurization]] and hydrodenitrification.
WS<sub>2</sub> adopts a layered structure related to MoS<sub>2</sub>, with W atoms situated in trigonal prismatic [[coordination sphere]].
==Uses==
===Dry lubricant===
Like MoS<sub>2</sub> and similar sulfides, WS<sub>2</sub> is used as a dry lubricant.
==References==
{{Unreferenced|date =September 2007}}
{{reflist}}
==External links==
[[Category:Sulfides]]
[[Category:Tungsten compounds]]
[[Category:Inorganic compound stubs]]
{{inorganic-compound-stub}}
[[ar:كبريتيد تنغستن رباعي]]