White carbon black Precipitated silica white powder Molecular formula:SiO2nH2O Have rubber,tyre,sole,medicine,feed,food grade ... WHITE SILICAChemical name: Silica, precipitated, hydrated, White carbon blackMolecular formula: SiO2 · nH2OAppearance: white granules or powderUse:It is widely ... soles with high reinforcing effect as that of carbon black, and it can make rubber products with light color ...