Polycarboxylic Antiscalant and Dispersant

Product List

Phosphonates Antiscalants, Corrosion Inhibitors and Chelating Agents
Salts of Phosphonates
Polycarboxylic Antiscalant and Dispersant
Biocide and Algicide
Reverse Osmosis Chemicals
Built Scale & Corrosion Inhibitors and Pretreatment Filming Agents
Corrosion Inhibitors & Oxygen Scavenger
Surfactant & Others

Acrylic Acid-2-Acrylamido-2-Methylpropane Sulfonic Acid Copolymer (AA/AMPS)

CAS No. 40623-75-4 EINECS No. 609-852-3
Molecular Formula (C3H4O2)n(C7H12NSO4)m Molecular Weight 400~800
Structural Formula

AA/AMPS Structural Formula

Product Features

AA/AMPS is the copolymer of acrylic acid and 2-acrylanmido-2-methylpropanesulfonic 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 is suitable to be used in water quality of high pH and high alkaline, it is one of the ideal scale inhibitor and dispersant on high concentration index.

AA/AMPS is a high-quality phosphate stabilizer and a very effective dispersant in all organic cooling water treatments that rely on the corrosion inhibiting properties of organic phosphonates. It acts as mineral scale dispersant, a calcium phosphonate stabilizer and long with organic phosphonate, as a threshold mineral scale inhibitor, additionally; it disperses any calcium phosphate formed organic phosphonates degraded by oxidizing biocides such Chlorine.

Technical Specification

Parameter Standard
Appearance Colorless to pale yellow viscous liquid
Solid content, % 40 min
Free monomer (as AA), % 0.5 max
Density (20℃), g/cm3 1.15 min
pH(1% water solution) 3.5~4.5

Applications & Usage

AA/AMPS can be used as 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 organophosphorines and zinc salt, the suitable pH value is 7.0~9.5. AA/AMPS can also be used as dyeing auxiliaries for textile.

Scale & Corrosion Inhibition Performance

CaCO3 inhibition Ca3(PO4)2 inhibition CaC2O4 inhibition Silicate inhibition
Good Excellent Good Good
Calcium tolerance Clay/Silt Dispersion Iron Oxide Dispersion Thermal Stability
Excellent Excellent Excellent Very Good

Package & Storage

25kg Bag 200L Drum 1000L IBC ISO Tank
200L Drum packaging
Storage for 10 months in shady room and dry place.

Hazard & Safety Precaution

Hazard Information Satety Precaution

Not regulated

Wear protective gloves Wear protective goggles Wear protective clothing

Once contacted with eye and skin, flush with plenty of clean water.

Alternative Name / Synonyms

  1. AA-AMPS;
  2. AA-AMPSA;
  3. Acrylic Acid-2-Acrylamido-2-Methylpropane Sulfonic Acid Copolymer;
  4. Sulfonated Polyacrylic Acid Copolymer;
  5. Phosphinocarboxylic acid copolymer