What is Polyacrylic Acid Sodium? Sodium polyacrylate is a water-soluble polymer compound, referred to as PAANa, the molecular formula is [C3H3O2Na]n, the relative molecular weight varies from hundreds to tens of millions, and the appearance is diverse, colorless or yellowish liquid, viscous liquid, gel, resin or solid powder, particles, dissolved in cold water, warm water, glycerol, propylene glycol, and other media, stable to temperature changes. When the pH is around 4, it is easy to gel; when the pH is around 2.5, it is close to dissolving. Learn more: https://www.alfa-chemistry.com/product/poly-acrylic-acid-partial-sodium-cas-9033-79-8-171541.html