Cadmium Tungstate, CdWO₄

Cadmium Tungstate, CdWO₄ has been prepared as colourless imperfect crystals by melting sodium tungstate, cadmium chloride, and salt.

A white amorphous monohydrate, CdWO₄.H₂O, is precipitated from solutions of cadmium acetate by sodium tungstate. One part dissolves in about 2000 parts of water at 15° C.

The dihydrate, CdWO₄.2H₂O, is precipitated from mixed solutions of a cadmium salt and sodium tungstate. It is very insoluble in water and, after ignition, in acids.

The metatungstate, CdO.4WO₃.10H₂O, and the paratungstate, 3CdO.7WO₃.16H₂O, have been prepared.

The double salts, Na₂O.2CdO.7WO₃.18H₂O and 3(NH₄)₂O.12CdO.35WO₃.35H₂O, have been reported.