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Silica as a Thickening Agent in Toothpaste
Product:Silicon Dioxide for Toothpaste as Thickening Agent
Item No:JS-185C2
CAS. NO.: 7631-86-9
Silica is commonly used as a thickening agent in toothpaste. It is preferred over precipitated white carbon black because it has a larger particle size and better adsorption ability, making it more effective at adsorbing materials. In addition, the uniformity of the particles helps to improve the transparency of the toothpaste. Silica is a stable and non-toxic material, which makes it an excellent choice for toothpaste production.
Silica used in toothpaste is mainly produced through the precipitation method. The primary purpose of using silica in toothpaste is to provide good thixotropy to the paste. The three-dimensional network structure of silica, which is composed of silicon-oxygen tetrahedra, can be highly dispersed in water solution. It can also convert a large amount of free water into bound water in the network structure. When the network structure is subjected to external forces that cause damage, it can quickly turn into a low-viscosity suspension. When the external force is removed, the network structure can utilize the hydrogen bond action of the surface hydroxyl groups to recover its homogeneous plastic state, and its viscosity will gradually increase.
In conclusion, the use of silica as a thickening agent in toothpaste provides many advantages, such as its ability to adsorb materials, improve the transparency of the toothpaste, and provide good thixotropy to the paste. Silica is a stable and non-toxic material, making it an excellent choice for toothpaste production.
Specification:
JS-185C2
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