White carbon black Precipitated silica white powder Molecular formula:SiO2nH2O Have rubber,tyre,sole, ... transparency. Used for [food]: It is white fine powder with high purity, high fluidity and large specific surface ... and oil absorber, etc.Standard:No.ItemSpecificationsAnalysis Result1AppearanceWhite granular powderWhite granular powder2SiO2 %≥90933Specific surface area-BET,m2/g140-2301984Na2SO4%≤ ...