... amorphous structure of the solid powder, pore size 8 ~ 16nm, chemical formula is mSiO2, nH2O, insoluble in Beer silica gel is an ... amorphous structure of the solid powder, pore size 8 ~ 16nm, chemical formula is mSiO2, nH2O, insoluble in water and any other solvent ... the foam and flavor of the beer. The physical and chemical nature of beer silica gel determin that the goods has ...