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 7M6U
Zn in 7NNG
Zn in 7NEE
Zn in 7NEU
Zn in 7M3K
Zn in 7KWD
Zn in 7KYH
Zn in 7KNG
Zn in 7KY2
Zn in 7KYF
© Copyright 2008-2020 by
Home   |    Site Map   |    Copyright   |    Contact us   |    Privacy