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Synthetic magnesium silicate
Synthetic magnesium silicates are white, odorless, finely divided powders formed by the precipitation reaction of water-soluble sodium silicate (water glass) and a water-soluble magnesium salt such as magnesium chloride, magnesium nitrate or magnesium sulfate. The composition of the precipitate depends on the ratio of the components in the reaction medium, the addition of the correcting substances, and the way in which they are precipitated.[1][2][3]
The molecular formula is typically written as MgO:XSiO2, where X denotes the average mole ratio of SiO2 to MgO. The product is hydrated and the formula is sometimes written MgO:XSiO2•H2O to show the water of hydration.
- ^ Ralph K. Iler, The Chemistry of Silica: Solubility, Polymerization, Colloid, and Surface Properties, and Biochemistry, John Wiley and Sons (1979)
- ^ Krysztafkiewics, A., Lipska, L.K., Ciesielczyk, F., and Jesionowski, T. Amorphous magnesium silicate – synthesis, physicochemical properties and surface morphology. Advanced Powder Technol, 15, 549, 2004.
- ^ Ciesielczyk, F., Krysztafkiewics, A., Jesionowski, T. Physicochemical studies on precipitated magnesium silicates. J Mater Sci. 42, 3831, 2007.
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