Litter The molecular formula is mSiO2. nH2O. Insoluble in water and any solvents, non-toxic tasteless, stable chemical properties, in addition to strong alkali, hydrofluoric acid does not react with any substance.

The chemical composition and physical structure of silica gel make it difficult to replace with many other similar materials: High adsorption performance, good thermal stability, stable chemical properties, high mechanical strength and strong hygroscopic properties.