... corrosion for metal (zinc, aluminum, etc.). Therefore, sodium metasilicate anhydrous is widely used for the manufacture of ... as the raw material for flameproofing agent, plastic maintenance agent, water retention agent, etc.PropertiesSodium metasilicate anhydrous is an ... It has the capabilities of removing scale, emulsifying, dispersing, wetting, penetrating, and also has the capability of buffering ...