Sodium Stearate Sodium stearate is a white oily powder with a slippery feel and fatty odor. Soluble in hot water or hot alcohol. The aqueous solution is alkaline due to hydrolysis and the alcoholic solution is neutral. Produced by the interaction of octadecanoic acid and sodium hydroxid. Used in toothpaste manufacturing, also used as water repellent and plastic stabilizer.
Sodium carboxymethyl cellulose (CMC-Na) is an organic compound with the chemical formula of [C6H7O2 (OH) 2OCH2COONa] n. It is a carboxymethyl derivative of cellulose and the most important ionic cellulose adhesive. Sodium carboxymethyl cellulose is usually an anionic polymer compound obtained by reacting natural cellulose with caustic soda and monochloroacetic acid, with a molecular weight ranging from several thousand to one million. CMC-Na is a white fibrous or granular powder that is odorless, odorless, and hygroscopic, and is easily dispersed in water to form a transparent colloidal solution. In the field of coatings, CMC can be used as a thickener, dispersant, leveling agent and wetting agent, etc., to help the coating better adhere to the surface and improve the smoothness and adhesion of the coating. In the field of paper and pulp, CMC can be used as a wet strength agent, adhesive, dispersant and anti-seepage agent to improve the strength and printing performance of paper. In the field of petroleum drilling fluid, CMC can be used as an important stabilizer and filter agent to help the drilling fluid maintain stability and filtration performance. In the food field, CMC can be used as a thickener, emulsifier and stabilizer to make yogurt, ice cream, jelly, condiments and bread and other foods.
Sodium polyacrylate is a white powder. Odorless and tasteless. Very hygroscopic. Polymer compounds with hydrophilic and hydrophobic groups. Slowly dissolves in water to form a very viscous transparent liquid. The viscosity of its 0.5% solution is about Paâ?¢s. The viscosity is not caused by water absorption and swelling (such as CMC, sodium alginate), but due to the many anionic groups in the molecule. The ionic phenomenon causes the molecular chain to grow and the viscosity increases to form a highly viscous solution. Its viscosity is about 15-20 times that of CMC and sodium alginate. Heat treatment, neutral salts, and organic acids have little effect on its viscosity, but when it is alkaline, the viscosity increases. Insoluble in organic solvents such as ethanol. Strong heat to 300 degrees does not decompose. The long-term viscosity changes very little, and it is not easy to decay. Because it is an electrolyte, it is susceptible to the influence of acid and metal ions, and the viscosity is reduced.