2-acrylamide-2-methylpropanesulfonic acid (AMPS) is a water-soluble sulfonic acid group with strong anion, which makes it have salt resistance, high temperature resistance, dyeing affinity, conductivity, ion exchange and good tolerance to divalent cations.
White crystal. Melting point 195 ℃ (decomposition). Soluble in water, the solution is acidic. It is soluble in dicarbonamide, partially soluble in methanol, ethanol and difficult to dissolve in acetone. Slightly sour.