... amorphous structure of the solid powder, pore size 8 ~ 16nm, chemical formula is mSiO2, nH2O, insoluble in Beer silica gel is an ... ~ 16nm, chemical formula is mSiO2, nH2O, insoluble in water and any other solvent. It can not react with any acid, alkali, salt except caustic ... the foam and flavor of the beer. The physical and chemical nature of beer silica gel determin that the goods has ...