Molar mass 266.73 g/mol | Appearance Colorless or white solid | |
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Global sodium stannate research report market 2014
Sodium stannate is the inorganic compound with the formula Na2Sn(OH)6. This colourless salt forms upon dissolving tin or tin dioxide in sodium hydroxide. Sodium stannate is used as a stabiliser for hydrogen peroxide.
Alkali metal stannate compounds are prepared by dissolving tin in sodium hydroxide:
Sn + 2 NaOH + 4 H2O → Na2[Sn(OH)6] + 2 H2A similar reaction occurs when tin dioxide is dissolved in base:
SnO2 + 2 NaOH + 2 H2O → Na2[Sn(OH)6]The anion is octahedral as are most stannates, e.g., the hexachlorostannate anion [SnCl6]2−. The Sn-O distances average 2.071 Å. In some old literature, stannates are sometimes represented as the simple oxyanion SnO32−.
References
Sodium stannate Wikipedia(Text) CC BY-SA