Sodium metasilicate pentahydrate (Na2SiO3•5H2O)-Granules introduce:
Sodium metasilicate is the chemical substance with formula Na2SiO3, which is the main component of commercial sodium silicate solutions. It is a colorless crystalline hygroscopic and deliquescent solid, soluble in water (giving an alkaline solution), but not in alcohols.
Molar mass:212.14 g/mol
Melting point:1,088 °C (1,990 °F; 1,361 K)
Solubility in water:22.2 g/100 ml (25 °C);160.6 g/100 ml (80 °C)
Solubility:insoluble in alcohol
Refractive index (nD):1.52
Sodium metasilicate pentahydrate is used as a starting material in the preparation of silicas and zeolites. It finds application in detergents and cleaners, pulp and paper production. It is also used in soil stabilization, sealing, adhesives and binders. Further, it is used in titanium dioxide production, paints for masonry and glass, spray coatings for tunnel construction. In addition to this, it is used in fruit and vegetable washes and sanitizers for food-contact surfaces.
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