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What is sodium silicate? There are two types sodium silicates: the chemical formula Na2SiO3, and the formula amount 122.00 is sodium metasilicate. The chemical formula Na4SiO4. Sodium silicate has a density 2.4g/cm3. It is dispersed in water to form a viscous liquid, also known as water glass or bubble alkali. It is an organic glue. Solid sodium silicate is often called water glass in south and bubble alkali north. The sodium silicate solution in water is commonly known as water glass. Pure sodium silicate, which is transparent and colorless, is the only kind of sodium silicate. However, the majority of sodium silicate that is sold on the market contains light blue impurities. Sodium orthosilicate, a rare colorless crystal, has a melting temperature of 1291K (1088). Water glass solution is slightly alkaline from hydrolysis, which makes it slightly stronger than soda-ash. It is a weak acid sodium, so it can precipitate siliconic acid in the presence hydrochloric acid and sulfuric acid. Carbon dioxide should not be allowed to enter the container during storage. Rubber stoppers are used to stop ground glass stoppers adhering to each other. In industry, sodium carbonate is often combined with quartz to make Na2CO3+SiO2+CO2 These products have a light blue-green color because of ferrous salts. They are used to inorganic bond agents, which can be mixed with powdered talcum powder, and others. They are used in soap fillers, acid-resistant concrete, and soap fillers. These pigments can be used for exterior wall coatings or poured into the foundation soil in ancient buildings to ensure that the soil is firm and resists collapse.
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