Acidic silica sol is an aqueous colloidal solution with nano - sized silica particles as the dispersed phase, usually having a pH value between 2 and 4. The surface of its silica particles has hydroxyl groups, which gives it good dispersibility and stability.
It is prepared by the reaction of sodium silicate with acid, and the process is mature. Due to its characteristics such as high specific surface area and strong adsorption, it is widely used in fields such as coatings, catalyst carriers, and precision casting, bringing many conveniences to related industries.