Sodium stannate, formally sodium hexahydroxostannate(IV), is the inorganic compound with the formula Na₂[Sn(OH)₆]. This colourless salt forms upon dissolving metallic tin or tin(IV) oxide in sodium hydroxide, and is used as a stabiliser for hydrogen peroxide.

Appearance

Sodium stannate comes in the form of white crystals or white crystalline powder.

Solubility

Sodium stannate is very soluble in water but not soluble in ethyl alcohol and acetone.

Synonyms

Disodium tin hexahydroxide.

Uses

Sodium stannate is fundamental in the metallurgic industry to remove arsenic and lead and in the ceramics and glass industries. The sodium stannate is applied for the production of tin based compounds and for the stabilization of peroxides. Sodium stannate is also used for tin surface treatment.