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Sodium metasilicate pentahydrate (CAS 10213-79-3)
Sodium metasilicate is the chemical substance with formula Na2SiO3, which is the main component of commercial sodium silicate solutions. It is an ionic compound consisting of sodium cations Na+ and the polymeric metasilicate anions [–SiO2−3–]n. It is a colorless crystalline hygroscopic and deliquescent solid, soluble in water (giving an alkaline solution) but not in alcohols.
Information
Industries: Household chemicals, Building chemistry
CAS number: 10213-79-3
WE number: 600-279-4
Chemical formula: H2O3Si·2Na·5H2O
Other physical properties
Melting / freezing point: 1089°C
Solubility in water: 210 g/l (20°C)
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