Surface-layer S830 silica sol

1.The S830 silica sol is usedforprecision casting especially and widely in surface layer. It makes the paints firm,dustproof, fireproof when being used in coatings. Used in precision casting of thin covers to increase the cover strength, improve the casting smooth finish, Its molding quality is better than that of water glass.2.Itisodorless ,tastless and nontoxic colloidal silica3.Its chemical molecullar is mSIO2.nH2O.4.It can be milky white,transparentor translucent.5.Physicaland Chemical IndicatorsIndicatorsSiO2 (%)Na2O(%)PH Value(25°C)Specific Gravity(25°C)Viscosity ≥%(mpa.s)Average particle diameter(nm)Shelf lifeS-830Surface≥31≤0.59.5 10.5≥1.21≤6.57 9≥One year