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sodium silicate |
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sodium silicate, any one of several compounds containing sodium oxide, Na2O, and silica silica or silicon dioxide, chemical compound, SiO2. It is insoluble in water, slightly soluble in alkalies, and soluble in dilute hydrofluoric acid. Pure silica is colorless to white. ..... Click the link for more information. , Si2O, or a mixture of sodium silicates. Sodium orthosilicate is Na4SiO4 (or 2Na2O·SiO2); sodium metasilicate is Na2SiO3 (or Na2O·SiO2); sodium disilicate is Na2Si2O5 (or Na2O·2SiO2); sodium tetrasilicate is Na2Si4O9 (or Na2O·4SiO2). All these compounds are transparent, glassy or crystalline solids that have high melting points (above 800°C;) and are water soluble. They are produced chiefly by fusing sand and sodium carbonate in various proportions. The product is commonly known as water glass water glass or soluble glass, colorless, transparent, glasslike substance available commercially as a powder or as a transparent, viscous solution in water. Chemically it is sodium silicate , potassium silicate, or a mixture of these. ..... Click the link for more information. . The greatest single use of sodium silicates is as a raw material for making silica gel. sodium silicate [′sōd·ē·əm ′sil·ə‚kāt] (inorganic chemistry) Na2SiO3A gray-white powder; soluble in alkalies and water, insoluble in alcohol and acids; used to fireproof textiles, in petroleum refining and corrugated paperboard manufacture, and as an egg preservative. Also known as liquid glass; silicate of soda; sodium metasilicate; soluble glass; water glass. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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| Coatings used with aluminum create a reaction with the sodium silicate binder, producing a black oxide which results in the coating peeling off from the mold surface. TimberSIL, produced by Timber Treatment Technologies LLC (TTT) [uses] patented technology [that] essentially converts sodium silicate to an insoluble glass that surrounds and protects wood cells, making it unavailable to fungi and insects as a food source. Alternatives to CCA now on the commercial market include alkaline copper quat, or ACQ (also called by just the name "quat"); copper azole, called CA or CBA; and sodium silicate borate, or SBX. |
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