... glass .it can be used to replace ethyl silicate for molding so as to reduce the costs ... of floor waxes ,etc. 8.Silica content 40% of alkaline silicon sol and can be used ... refractory material and polishing processingTechnical Data ITEMJN-40SiO2,%40-41Na2O,%≤0.38pH value9.8viscosity(25°C), ... 25kg, 250kg plastic barrel.Storage & transportationkeep at 0-40°C , away from exposure and freezing condition. ...