Tungsten trisulfide Names Other namesTungsten(VI) sulphide, tris(sulfanylidene)tungsten
Identifiers ChemSpider EC Number InChI=1S/3S.W
Key: YMZATHYBBBKECM-UHFFFAOYSA-N
Properties WS3 Molar mass 280.038 g/mol Appearance Brown solid Related compounds Related compounds
Tungsten disulfide Except where otherwise noted, data are given for materials in their
standard state (at 25 °C [77 °F], 100 kPa).
Chemical compound
Tungsten trisulfide is aninorganic compound oftungsten andsulfur with the chemical formula WS3 .[ 1] [ 2] [ 3] [ 4]
1. Bubblinghydrogen sulfide through hot acidified solution of tungstenates.[ 5]
2. Reaction oftungsten disulfide and elemental sulfur on heating:[ 6]
WS2 + S → WS3 3. Precipitates upon acidification ofthiotungstate solutions:[ 5]
(NH4 )2 WS4 + HCl → WS3 + 2 NH4 Cl + H2 S Na2 WS4 + H2 SO4 → WS3 + Na2 SO4 + H2 S Physical properties [ edit ] Slightly soluble in cold water and forms colloidal solution in hot water.
Soluble in alkali metal carbonates and alkali metal hydroxides.[ 3]
Chemical properties [ edit ] Tungsten trisulfide can be decomposed by heating into tungsten disulfide and elemental sulfur:
WS3 → WS2 + S Reacts with sulfide solutions:
WS3 + (NH4 )2 S → (NH4 )2 WS4 Reduced by hydrogen:
WS3 + 3H2 → W + 3 H2 S ^ Scott, Robert A.; Jacobson, Allan J.; Chianelli, Russ R.; Pan, W. H.; Stiefel, Edward I.; Hodgson, Keith O.; Cramer, Stephen P. (1 April 1986)."Reactions of molybdenum trisulfide, tungsten trisulfide, tungsten triselenide, and niobium triselenide with lithium. Metal cluster rearrangement revealed by EXAFS" Inorganic Chemistry 25 (9):1461– 1466.doi :10.1021/ic00229a032 .ISSN 0020-1669 . Retrieved1 November 2021 . ^ Hille, Russ; Schulzke, Carola; Kirk, Martin L. (29 September 2016).Molybdenum and Tungsten Enzymes: Bioinorganic Chemistry Royal Society of Chemistry . p. 155.ISBN 978-1-78262-877-4 . Retrieved1 November 2021 . ^a b Kirk-Othmer Concise Encyclopedia of Chemical Technology, 2 Volume Set John Wiley & Sons . 16 July 2007. p. 1122.ISBN 978-0-470-04748-4 . Retrieved1 November 2021 .^ "Tungsten trisulfide" .National Institute of Standards and Technology . Retrieved1 November 2021 .^a b Zelikman, A. N.; Krein, O. E.; Samsonov, G. V. (1966) [1964]. Belyaevskaya, L. V. (ed.).Metallurgiya redkikh metallov Metallurgy of Rare Metals ]. Israel Program for Scientific Translations. Translated by Aladjem, A. (2nd ed.). Jerusalem: S. Monson / Wiener Bindery. p. 7. Retrieved1 November 2021 – viaGoogle Books . ^ "Tungsten Trisulfide-- Tungsten Trisulfide Professional Manufacturer and Supplier" . tungsten-powder.com. Retrieved1 November 2021 .
Tungsten(0) Tungsten(II) Tungsten(III) Tungsten(IV) Tungsten(V) Tungsten(V,VI) Tungsten(VI)
