Why toothpaste can be used to peel the dirt on the sofa
Calcium pyrophosphate (Ca2P2O7): Calcium pyrophosphate is obtained by treating the calcium phosphate with high temperature. Since it does not react with the fluorine-containing compound, it can be used as a base for fluorine-containing toothpaste.
Hydrated silicic acid (SiO2? NH2O): Hydrated silicic acid is a very fine white particles that can be used in transparent toothpaste. In addition, because of its specific capacity, can be used as a toothpaste bulking agent and tackifier use.
Calcium hydrogen phosphate (calcium hydrogen phosphate dihydrate CaHPO4? 2H2O and calcium hydrogen phosphate calcium salt CaHPO4): calcium hydrogen phosphate is divided into two molecules of water dihydrate and anhydrous salt two. Dihydrate and other ingredients have a good mixture, but because of the high hardness of anhydrous salt, strong friction, so in the special stains in the toothpaste, dihydrate can be mixed with 5% to 10% anhydrous salt
Calcium carbonate (CaCO3): calcium carbonate is heavy and light two, heavy calcium carbonate is the rock of limestone and calcite crushed, ground, refined from. Light calcium carbonate is dissolved in hydrochloric acid calcium carbonate, and then into the carbon dioxide, calcium carbonate precipitation. Light calcium carbonate particles fine, light weight, can be used for toothpaste.
Toothpaste is made of powdered frictional, wetting agents, surfactants, binders, fragrances, sweeteners and other special ingredients. Toothpaste commonly used in the friction agent are:
