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Phosphonates Antiscalants, Corrosion Inhibitors and Chelating Agents
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Polycarboxylic Antiscalant and Dispersant
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Surfactant & Others

Polyacrylic Acid (PAA)

CAS No. 9003-01-4 EINECS No. 618-347-7
Molecular Formula (C3H4O2)n Molecular Weight 3000~5000
Structural Formula

PAA Structural Formula

Product Features

PAA is innoxious and soluble in water, it can be used in situations of alkaline and high concentration without scale sediment. PAA can disperse the microcrystals or microsand of calcium carbonate, calcium phosphate and calcium sulfate. PAA is used as scale inhibitor and dispersant for circulating cool water system, papermaking, weave, dyeing, ceramic, painting, etc.

Technical Specification

Parameter Standard
Appearance Colorless to light yellow transparent liquid Colorless to light yellow transparent liquid
Solid content, % 30.0 min 50.0 min
Free monomer (as AA), % 0.50 max 0.50 max
Density (20℃), g/cm3 1.09 min 1.20 min
pH(1% water solution) 2.5-4.5 2.5-4.5

Applications & Usage

PAA can be used as scale inhibitor and dispersant in circulating cool water systems in power plants, iron & steel factories, chemical fertilizer plants, refineries and air conditioning systems. Dosage should be in accordance with water quality and equipment materials. When used alone, 1-15mg/L is preferred.

Scale & Corrosion Inhibition Performance

CaCO3 inhibition CaSO4 inhibition BaSO4 inhibition Silicate inhibition
Excellent Very good Good Good
Calcium tolerance Clay/Silt Dispersion Thermal Stability Iron Oxide Dispersion
Excellent Very good Excellent Very Good

Package & Storage

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

Hazard & Safety Precaution

Hazard Satety Precaution

Corrosive, Class 8, UN 3265

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

Alternative Name / Synonyms

  1. PAA;
  2. Polyacrylic Acid;
  3. Acrylicresin;
  4. acrylicacidresin;
  5. acrylicacid polymers;
  6. acrysola;
  7. polyacrylateelastomers;
  8. 2-Propenoic acid, homopolymer