Metasilicate

Metasilicates are silicates containing ions of empirical formula SiO²⁻
₃. Common stoichiometries include M^I
₂SiO₃ and M^IISiO₃.

Common compounds containing metasilicate anion are:

• Metasilicic acid (hydrogen metasilicate)
• Sodium metasilicate
• Calcium metasilicate

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Sodium metasilicate is a metasilicate with formula Na2SiO3- Sodium metasilicate is used in fireproofing mixtures; in laundry, dairy, metal, and floor cleaning; in deinking paper; in washing carbonated drink bottles; in insecticides, fungicides, and antimicrobial compounds; as a chemical intermediate for silica gel catalysts; as an additive in soaps and synthetic detergents