Zinc Selenate, ZnSeO₄

The colourless hexahydrate, ZnSeO₄.6H₂O, crystallises in the tetragonal system, and the pentahydrate occurs in triclinic crystals.

Zinc selenate forms a series of double salts represented by the general formula R2SeO₄.ZnSeO₄.6H₂O, where R is an alkali metal or NH₄.

The double salt, K₂SeO₄.ZnSeO₄.2H₂O, is known, and some complex salts containing zinc selenate have been prepared. The acid salt, ZnSeO₄.H₂SeO₄.2H₂O, has also been obtained.