1.Silica gel has strong adsorption ability 2.good thermal stability, chemical stability, high mechanical strength. Silica gel desiccant CharactersSilica gel desiccant is a highly active adsorption material. It is usually made of reacting with sodium silicate and sulfuric acid, aging as well as acid bubble.Silicate belongs to the amorphous substances. The chemical formula is mSiO2·nH2O.It is ...