White carbon black is a general term for white powdery X-ray amorphous silicic acid and silicate products. It mainly refers to precipitated silica, fumed silica, and ultrafine silica gel. It also includes powdered synthetic silicic acid. Aluminum and calcium silicate. Silica is a porous substance whose composition can be expressed by SiO2 · nH2O, where nH2O exists in the form of surface hydroxyl groups. Soluble in caustic and hydrofluoric acid, insoluble in water, solvents and acids (except hydrofluoric acid). High temperature resistance, non-flammable, tasteless, odorless, and has good electrical insulation.

Transparent colored and opaque toothpaste with white carbon as filler and abrasive. This kind of toothpaste has good flexibility and dispersibility, the paste is smooth, soft, and abrasive, and does not abrasion the toothpaste tube; it can keep the drug toothpaste Drug stability. In particular, it has good compatibility with fluoride, which can avoid the disadvantages of insoluble salts produced by calcium salts as abrasives.