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 ?
Top manufacturers of Liquid Sodium Silicate are stated along with their profiles elaborating basic information, manufacturing base, sales area, product type, application and specification for comparison analysis.
Sodium silicate during the exchange reactions with a cation exchanger (Amberlite IR-2000) resulted in the formation of silicic acid which upon hydrolysis gives Si(OH)4.
15:1 for the pure PU material, and the weight fractions of sodium silicate ranged from 10 to 30 wt% in PU/silicate composites.
It was found in our experiments that the ratio of MTMS to sodium silicate and the concentration of the reaction mixture influence the results of the reactions profoundly.
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.
The difference between the averages was established for the admixture based on sodium silicate and compared to other admixture types.
Higher shoot fresh weight was recorded when 100 mg kg silicon was applied from calcium silicate which was statistically equal to the 150 mg kg silicon from that source and followed by 100 and 150 mg kg silicon applied from a source sodium silicate.
2008) sodium silicate solution changes the microstructure of the hardened cement paste, accelerates binding time, enhances closed porosity and has insignificant effect on the strength of hardened cement paste.
In total, nearly 80,000 gallons of sodium silicate were pumped.
Production of soluble sodium silicate requires a source of sodium ion.
Sodium Hexameta phosphate (Na6P6O18), Sodium Silicate (Na2SiO3), Sodium Pyrophosphate (Na2P2O7), and Ethylene-diamine-tetraacetatic-acid (C10H16N2O8) were used as dispersants.
An antiperspirant active is added to the blend as well as sodium silicate, potassium silicate, calcium silicate, magnesium silicate, zinc silicate, aluminum silicate or mixtures thereof.