... formula:SiO2nH2O Have rubber,tyre,sole,medicine,feed,food grade WHITE SILICAChemical name: Silica, precipitated, hydrated, ... materials.Used for [medicine, feedstuff]: Used for [silicon rubber]: For its special physical and chemical properties, ... aging resistance, resilience and compressive deformation resistance of silicon rubber. Used for [tyres]: If used in ... is 20KGs. Precipitated Silica tyre grade