sodium silicate(redirected from Sodium metasilicate)
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Any of various water-soluble silicate glass compounds used as a preservative for eggs, in plaster and cement, and in various purification and refining processes. Also called soluble glass, water glass.
1. (Elements & Compounds) Also called: soluble glass a substance having the general formula, Na2O.xSiO2, where x varies between 3 and 5, existing as an amorphous powder or present in a usually viscous aqueous solution. See water glass1
2. (Elements & Compounds) any sodium salt of orthosilicic acid or metasilicic acid
any of several clear, white, or greenish water-soluble compounds of formulas varying in ratio from Na2O∙3.75SiO2 to 2Na2O∙SiO2, used chiefly in processing textiles and in the manufacture of paper products and cement. Also called water glass.