Why can toothpaste be used to wipe the dirt off the sofa?
Toothpaste is made up of powder friction agents, wetting agents, surfactants, adhesives, spices, sweeteners, and other special ingredients.
Calcium hydrogen phosphate (dicalcium phosphate, two water salt, CaHPO4, 2H2O and calcium phosphate anhydrous salt CaHPO4): dicalcium phosphate is divided into two molecules, water two water salt and anhydrous salt two kinds. Two, water, salt and other ingredients have good mixing, but because of the hardness of anhydrous salt high, strong friction, so in the special smoke traces of toothpaste, can be in two water salt mixed with 5%~10% anhydrous salt.
Calcium carbonate (CaCO3): calcium carbonate has two kinds of heavy and light, heavy calcium carbonate is to limestone and calcite in the rock crushing, grinding, refining and become. Light calcium carbonate dissolves calcium salt in hydrochloric acid, and then passes in carbon dioxide to obtain calcium carbonate precipitation. Light Calcium Carbonate Granules, light weight, can be used toothpaste.
Hydrated silicic acid (SiO2, nH2O): hydrated silicic acid is a very fine white particle that can be used in transparent toothpaste. In addition, because of its specific volume, it can be used as an additive and tackifier for toothpaste.
