Acrylic acid/acrylate/sulfosalt terpolymer is a scale inhibitor and dispersant containing sulfosate and polyelectrolyte. In this terpolymer, there exists strong acid, weak acid, and non-ion group. Acrylic acid/acrylate/sulfosalt terpolymer (IR-613) is suitable to be used in high temperatures, high pH, high hardness and high alkaline.

IR-613 has good scale inhibition for ferric oxide, calcium phosphate, zinc phosphate, and calcium carbonate. It has a good synergic effect with polyphosphate, zinc salt, and other agents.

Acrylic acid/acrylate/sulfosalt terpolymer can be used as a scale inhibitor and dispersant in the industrial circulating water system, oilfield refill water system, and boiler water.