sodium silicate


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sodium silicate,

any one of several compounds containing sodium oxide, Na2O, and silicasilica
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.
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, 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 glasswater 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.
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. The greatest single use of sodium silicates is as a raw material for making silica gelsilica gel,
chemical compound. It is a colloidal form of silica, and usually resembles coarse white sand. It may be prepared by partial dehydration of metasilicic acid, H2SiO3. Because it has many tiny pores, it has great adsorptive power.
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Sodium silicate

A liquid used in asbestos encapsulation, concrete and mortar waterproofing, and high-temperature insulations; also called water glass. This substance is nontoxic when cured but caustic when wet.

Sodium Silicate

 

any of the sodium salts of silicic acids. Known anhydrous sodium silicates include sodium metasilicate (Na2O·SiO2 or Na2SiO3), sodium orthosilicate (2Na2O·SiO2 or Na4SiO4), sodium sesquisilicate (3Na2O·2SiO2 or Na6Si2O7), sodium bisilicate (Na2O·2SiO2 or Na2Si2O5), and sodium trisilicate(Na2O·3SiO2 or Na2Si3O7).

sodium silicate

[′sōd·ē·əm ′sil·ə‚kāt]
(inorganic chemistry)
Na2SiO3 A 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.
References in periodicals archive ?
15:1 for the pure PU material, and the weight fractions of sodium silicate ranged from 10 to 30 wt% in PU/silicate composites.
2009) tested an integrated nano-modifying effect of polycarboxylate polymers and sodium silicate solution on the rheological properties of cement pastes (yield stress, viscosity and dilatancy) and agreed that sodium silicate solution could be used for modifying the rheological properties of the mixtures.
About 50 cubic meters of cement and sodium silicate is used for the fixation and stabilization of cutting and thus more cement and sodium silicate is used for fixation and stabilization purposes.
A three-component binding phase consisting of colloidal sodium silicate solution, Portland cement and super plasticizer was used in the research into the effect of multicomponent disperse systems on the durability of binder matrix.
In total, nearly 80,000 gallons of sodium silicate were pumped.
Production of soluble sodium silicate requires a source of sodium ion.
It is said to produce a rapid chemical reaction which penetrates and densifies the upper layer of the concrete surface much quicker than sodium silicate or potassium silicate formulas.
Cylacell is a predictable, environmentally safe, and equipment-friendly inorganic sodium silicate endothermic blowing agent for thermoplastics, rubber, silicone, and thermoset polyester bulk molding compounds.
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.
Amorphous and precipitated silica and silica gels, prepared by the acidification of a solution of sodium silicate, are commonly used in premium matte coated ink-jet papers.
of Webster, Texas, in a joint venture with Producers Rice Mill at Stuttgart, plans to build a manufacturing plant using patented technology for producing liquid sodium silicate and activated carbon products from rice hull ash.