AA AMPS Copolymer


AA/AMPS is the copolymer of acrylic acid and 2-acrylamide-2-methylpropane sulfonic acid. Due to including carboxylic group (scale inhibition and dispersion) and sulfonic acid group (strong polarity) in this copolymer, AA/AMPS has high calcium tolerance and good scale inhibition for calcium phosphate, calcium carbonate and zinc scale.

When built with organophosphines, the synergic effect is obvious. AA/AMPS copolymer is suitable to be used in water quality of high pH and high alkaline. AA/AMPS copolymer is one of the ideal scale inhibitor and dispersant on high concentration index.

CAS No.: 40623-75-4

Structural Formula:



AppearanceColorless or light yellow liquid
Solid content, %40 Min.
Free monomer (as AA), %0.8 Max.
Density (20℃), g/cm31.15 Min.
pH (1% water solution)3.5-4.5
Viscosity, mpa.s90-300


AA/AMPS can be used as a scale inhibitor and dispersant in open circulating cool water system, oilfield refill water system, metallurgy system, and iron & steel plants to prevent sediment of ferric oxide. When built with organophosphine and zinc salt, the suitable pH value is 7.0~9.5.

AA/AMPS copolymer can also be used as dyeing auxiliaries for textiles.

Package and Storage:

200L plastic drum, IBC(1000L), customers’ requirements. Storage for ten months in a shady room and dry place.

AA/AMPS Copolymer SDS Download