White carbon black is the general term of white powder X-ray amorphous silicic acid and silicate products, mainly referring to precipitated silica, fumed silica and ultra-fine silica gel, as well as powder synthetic aluminum silicate and calcium silicate. Silica is a porous material, and its composition can be represented by SiO2 · nH2O, in which nH2O exists in the form of surface hydroxyl. It is soluble in caustic soda and hydrofluoric acid, but insoluble in water, solvent and acid (except hydrofluoric acid). High temperature resistance, nonflammable, tasteless, odorless, and good electrical insulation.
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