| sodium silicate n. 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. |
| soluble glass n. See sodium silicate. |
soluble glass n.
A silicate of potassium or sodium, soluble in hot water but solid at ordinary temperatures, used for fixed dressings. Also called water glass.
soluble glass
crystal-like lumps that range from colourless to white or grayish white and resemble glass but can be dissolved in water to form a syrupy liquid. Some forms are slightly soluble, and some are almost insoluble; they are best dissolved by heating with water under pressure. A little water dissolves water glass more readily than much water does. The solutions are strongly alkaline. The chemical formulas Na2SiO3, Na6Si2O7, and Na2Si3O7 describe the composition of various forms of water glass.
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