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| Sulphuric Acid on the WebTM | Technology Manual | DKL Engineering, Inc. |
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Knowledge for
the Sulphuric Acid Industry Introduction
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The term sodium silicate refers to any one of
several compounds containing sodium oxide, Na2O, and silica, 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. The greatest single use of sodium silicates is
as a raw material for making silica gel. Synonyms: water glass, soluble glass, silicate
of soda, sodium orthosilicate, sodium silicate glass Appearance: colourless liquid Stable. Incompatible with acids, most metals,
many organic materials. Harmful by ingestion. Corrosive - may cause
burns through skin or eye contact. Very destructive of mucous membranes. Non-hazardous for air, sea and road freight. Safety glasses, gloves. |
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2006, 2007, 2008 DKL
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