Strontium Stannate

By the addition of potassium stannate to a solution of a strontium salt, or of strontium hydroxide, small transparent rhombohedra are obtained of composition 3SrO.2SnO₂.10H₂O. The compound is insoluble in water, but soluble in cold hydrochloric or nitric acid, forming a clear solution which gelatinises on heating.

Chlorostannates, SrSnCl₆.8H₂O, 5H₂O, and 4H₂O, a bromostannate, SrSnBr₆.6H₂O, and a thiostannate, SrSnS₃.12H₂O, have also been described.