Sodium polyacrylate is a white powder. Odorless and tasteless. Highly hygroscopic. Polymer compounds with hydrophilic and hydrophobic groups. Slowly dissolve in water to form a very viscous transparent liquid. The viscosity of its 0.5% solution is about PA • s. The viscosity is not caused by water absorption and swelling (such as CMC and sodium alginate), but due to the ionic phenomenon of many anionic groups in the molecule, the molecular chain grows, showing an increase in viscosity, and the chemical book forms 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 the viscosity increases when it is alkaline. Insoluble in organic solvents such as ethanol. Strong heat to 300 degrees without decomposition. The viscosity changes very little for a long time and is not easy to decay. The viscosity is easily affected by acid and electrolyte. In case of divalent metal
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