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]]