... rubber,tyre,sole,medicine,feed,food,medicine WHITE SILICAChemical name: Silica, precipitated, hydrated, White carbon blackMolecular formula: SiO2 · nH2OAppearance: white granules ... it may be used for the following aspects such as husk rice roller, spinning weaving roller, adhesive for paper making, pesticide carrier ... the woven bag made of polypropylene. Net weight is 20KGs. Silica