Silica gel for Beer is a kind of non-crystalline micro-porous solid powder, its pore diameter is 8-16nm. Its chemicalmolecular formula is msi0,nH,O,insoluble in water or any other solvent (except the caustic alkali and hydrofluoric acid). itdoes not react with any acid, akali or salt. it is nontoxic, tasteless,flame-resisting and non-explosive. It possesses high stability underhot or cold atmosphere and is harmless to human body, mainly used in beer industry.