Silicotungstic acidSilicotungstic acid or tungstosilicic acid is a heteropoly acid with the chemical formula H4[SiW12O40]. It forms hydrates H4[SiW12O40]*nH2O. In freshly prepared samples, n is approximately 29, but after prolonged desiccation, n becomes 6. Read from the Chembox of the Wikipedia article Silicotungstic acid, revision 1380048424.

Property

Value

Formula

H4O40SiW12, 2878.16 g/mol

Melting point

53 °C

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