Sodium Silicate Powder
sodium metasilicate anhydrous - disodium silicate
| Code | Pack Size | Price | |
|---|---|---|---|
| 209C1 | 250g | £7.99 | Out of Stock |
SODIUM SILICATE POWDER
Disodium Metasilicate
- Formula: Na2SiO3
- UN No. 1759
- CAS No. 6834–92–0
- Other Names: disodium silicate, sodium metasilicate anhydrous
- Appearance: colourless / white
- % purity: 99% minimum
- Melting Point © 1089
- Specific gravity (g/cm3 ) 2.614
- Refractive Indices (glass, ?, ?) 1.520, 1.518, 1.527
- Specific Heat (20 C) 0.217
- Heat of Formation (kcal/mol) –371.2
- Heat of Solution (cryst.) (kcal/mol) –7.45
- Heat of Fusion (kcal/mol) 10.3
- Soluble in: cold water
- Insoluble in: alcohol, acids, and salt solutions
Sodium metasilicate is used in fireproofing mixtures; in laundry, dairy, metal, and floor cleaning; in de-inking recycled paper products in the pulp and paper industry; in washing carbonated drink bottles; in insecticides, fungicides, and antimicrobial compounds; and as a chemical intermediate for silica gel catalysts, an additive in soaps and synthetic detergents, an ingredient in adhesives, a bleaching aid, and a boiler compound. Combined with other salts such as sodium bicarbonate, it can be applied to aluminum as a paint stripper.
In detergents, sodium metasilicate has been used as a precipitating builder for calcium and magnesium. It is a chelating agent and corrosion inhibitor.
Its gel-forming property has been employed in soil stabilization.
