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About Sodium Metasilicate Anhydrous
sodium metasilicate pentahydrate/ silicic acid disodium salt The Metso range of Sodium Metasilicate Pentahydrate Sodium Metasilicate has been used for a long time in alkaline cleaning agents for the household and industrial sectors. Sodium Metasilicate provides both silica and alkalinity in a molar ratio of 1:1 between silica and sodium oxide, which makes it especially suitable for hard surface cleaning. Its multifunctional cleaning properties enhance the removal of fatty and particulate soil in both soft and hard water. The corrosion inhibiting properties of Sodium Metasilicate help protect both metal and non-metal surfaces. Metso Sodium Metasilicate Pentahydrate granules are white and free-flowing. The product is characterized by: ■ high dissolution rate, even in cold water ■ negligible insoluble residue ■ high mechanical strength ■ low dust content Alkalinity The alkalinity provided by Metso Sodium Metasilicate Pentahydrate saponifies fatty soil which makes them readily dissolvable. The saponified fatty soil acts as a soap and contributes to the emulsification and removal of oily and greasy soil. The alkalinity also neutralizes acid soils, and breaks down protein and starch. The high active alkali and minimum inactive alkali content makes Metso Sodium Metasilicate Pentahydrate an economical choice for cleaning applications. The table shows the active and inactive alkali content for common industrial alkalies. Buffering action It is very important to keep the pH at a high and constant level throughout the cleaning process. Acidic soils lower the pH of the cleaning solutions below that required for optimum cleaning by the surfactants and other ingredients. Metso Sodium Metasilicate Pentahydrate is an excellent buffer and the effect of acid soil is minimized. Compared to other alkalis, with the exception of sodium hydroxide, Metso Sodium Metasilicate Pentahydrate keeps the cleaning solution at constant pH over an extensive loading of acidic soil.
