Atomistry » Tungsten » Compounds » 9-Tungsto-arsenic Acid
Atomistry »
  Tungsten »
    Compounds »
      9-Tungsto-arsenic Acid »

9-Tungsto-arsenic Acid

9-Tungsto-arsenic Acid, luteo-arsenotungstic acid, may be obtained by saturation of a boiling solution of an alkali arsenate with tungstic anhydride, and allowing the mixture to stand for several weeks until the reactions of the 12-tungsto-arsenate have disappeared; or by acidifying a solution of one of its salts and shaking out with ether according to Drechsel. The acid is isomorphous with the corresponding phosphoric acid and has composition


It melts at 26° C. Only the ammonium and potassium salts of this series have been prepared. These are obtained by adding arsenic acid to a boiling solution of alkali tungstate until the colour becomes deep yellow, and then treating with ammonium or potassium chloride. On evaporation the solution yields lemon-yellow crystals of composition

R2O.As2O5.18WO3.14H2O (R = NH4, K).

Last articles

Zn in 8WB0
Zn in 8WAX
Zn in 8WAU
Zn in 8WAZ
Zn in 8WAY
Zn in 8WAV
Zn in 8WAW
Zn in 8WAT
Zn in 8W7M
Zn in 8WD3
© Copyright 2008-2020 by
Home   |    Site Map   |    Copyright   |    Contact us   |    Privacy