Atomistry » Tungsten » Compounds » Tungsten Diphosphide
Atomistry »
  Tungsten »
    Compounds »
      Tungsten Diphosphide »

Tungsten Diphosphide, WP2

Tungsten Diphosphide, WP2 is prepared by heating tungsten hexachloride at 450° to 500° C. in a current of dry hydrogen phosphide. The product is washed with carbon disulphide to remove any free phosphorus present. The phosphide is obtained in black crystals, of density 5.8, insoluble in water, and in the usual organic solvents. It is stable in air, but decomposes on fusion. When heated in hydrogen to 600° C. partial reduction occurs, but at 900° C. phosphorus still remains, probably as the phosphide WP. The halogens react vigorously on heating; it burns brilliantly in oxygen at 450° C. Many metals reduce it to tungsten at high temperatures, e.g. copper, zinc, or iron at 1000° C. Hydrofluoric and hydrochloric acids do not attack it, but a mixture of either of these acids with nitric acid dissolves it readily. When fused with alkali carbonate, a mixture of phosphate and tungstate is obtained.

Last articles

Ca in 1CJP
Ca in 1CJY
Ca in 1CIW
Ca in 1CIZ
Ca in 1CDL
Ca in 1CH0
Ca in 1CIU
Ca in 1CGY
Ca in 1CGX
Ca in 1CGW
© Copyright 2008-2020 by atomistry.com
Home   |    Site Map   |    Copyright   |    Contact us   |    Privacy