By treating solutions of tungstates with arsenious acid the following crystalline compounds have been obtained by Gibbs,
7(NH4)2O.2As2O3.18WO3.18H2O,
4BaO.As2O3.9WO3.21H2O,
9Na2O.8As2O3.16WO3.55H2O.
This author also describes compounds of composition 10K2O.As2O3.4AS2O5.21WO3.26H2O,
10K2O.14AS2O3.3P2O5.32WO3.28H2O,
5K2O.Na2O.2As2O3.2P2O5.12WO3.15H2O, and
7K2O.AS2O3.4P2O5.60WO3.55H2O. |