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Chemical structure
Polyacrylic acid (PAA) repeat unitnOHO

Repeat unit – polyacrylic acid

Formula
(C₃H₄O₂)n
Mol. weight
2,000–3,000 g/mol (Mw)
CAS
9003-01-4
PolymerZEELCHEM™ 1000In stock

Polyacrylic Acid (PAA) CAS 9003-01-4 – ZEELCHEM™ 1000

Low molecular weight (Mw 2,000–3,000) anionic homopolymer of acrylic acid. A proven threshold scale inhibitor, dispersant and sequestrant for calcium carbonate and calcium phosphate scale in cooling, boiler and desalination systems.

Price per pack₹8,100
₹135/kg+ 18% GST · freight to-pay
Pack size
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  • TDS, MSDS, COAWith every batch

Quick answer

What is Polyacrylic Acid (PAA)?

Polyacrylic acid (PAA, CAS 9003-01-4) is a low molecular weight anionic polymer used as a scale inhibitor and dispersant in cooling towers, boilers and RO systems. ZEELCHEM™ 1000 is supplied as a 50% solution in 60 kg carboys at ₹145/kg from Vadodara, Gujarat.

CAS number9003-01-4
Formula(C₃H₄O₂)n
Molecular weight2,000–3,000 g/mol (Mw)
Product codeZEELCHEM™ 1000
HSN code39069090
Price₹135/kg, ₹8,100 per 60 kg carboy + GST
Made inVadodara, Gujarat, India

About Polyacrylic Acid (PAA)

Polyacrylic acid is an anionic, water-soluble polymer with flexible chains and a high degree of ionisation from its carboxylic acid side groups. That gives ZEELCHEM™ 1000 high dispersing power and high charge density.

It is thermally stable up to about 200 °C, which makes it suitable for circulating cooling water in power plants, low- and medium-pressure boilers and high-temperature process water.

Synonyms: PAA, polyacrylic acid, acrylic acid polymer, acrylic acid homopolymer, acrylic acid resin.

Key benefits

  • Threshold inhibition of CaCO₃ and calcium phosphate scale
  • Disperses silt, clay, iron oxide and suspended solids
  • Thermal stability up to ~200 °C
  • High charge density and dispersing power
  • Synergistic with phosphonates (HEDP, PBTC) and zinc programs
  • Fully water-soluble, easy to dose with metering pumps

Also known as: PAA, acrylic acid homopolymer, poly(acrylic acid), LMW polyacrylate

Technical specifications

Chemical namePolyacrylic acid
CAS number9003-01-4
Product codeZEELCHEM™ 1000
AppearanceClear, colourless liquid
Total solids49–51 wt%
Active polymer≥ 48 wt%
Molecular weight (Mw)2,000–3,000 g/mol
pH, as supplied2.0–4.0
Brookfield viscosity @ 25 °C150–700 mPa·s
Specific gravity @ 25 °C1.18–1.20
Water solubilityCompletely soluble
Shelf life24 months (typical)
Packaging50 kg / 60 kg HDPE carboys

Applications of Polyacrylic Acid (PAA)

  • Cooling water treatment (cooling towers, power plants)
  • Boiler water treatment
  • Desalination and RO antiscalant formulations
  • Paints and coatings: pigment and filler dispersant
  • Ceramics and mineral processing: deflocculant for alumina, zirconia, kaolin and clay slurries
  • Laundry and cleaning: builder / anti-redeposition polymer

Dosage and how to use

  • Typical cooling water dose: 5–20 ppm active polymer, depending on hardness, alkalinity and cycles of concentration.
  • Feed continuously to maintain threshold concentration; slug dosing is generally ineffective.
  • Confirm dosage with water analysis (LSI / RSI) and jar testing.

Dosing estimator

–per day
–metering pump
–per month

Estimate only. Confirm dosage with a water analysis and trial – our team can help.

Safety, storage and handling

  • Acidic: wear splash goggles, chemical-resistant gloves and protective clothing.
  • Ensure adequate ventilation; respiratory protection normally not required for closed handling.
  • Add slowly during dilution or neutralisation. Do not eat, drink or smoke in the handling area.
  • Store in closed HDPE containers in a cool, dry place.

Industrial use only. Read the current safety data sheet before handling.

Documents

Batch COA is sent with every dispatch. Ask for any document on WhatsApp.

Frequently asked questions

What is polyacrylic acid used for in water treatment?

As a low molecular weight scale inhibitor and dispersant. It keeps calcium carbonate and calcium phosphate from forming hard scale in cooling towers, boilers and RO systems.

What is the CAS number of polyacrylic acid?

CAS 9003-01-4.

What molecular weight is ZEELCHEM™ 1000?

Weight-average molecular weight 2,000–3,000 g/mol, the range best suited to threshold scale inhibition.

What is the price of polyacrylic acid?

₹145/kg (₹8,700 per 60 kg carboy), excluding GST and transport. Bulk prices on request.

Are TDS, MSDS and COA available?

Yes. TDS, MSDS/SDS and batch COA are supplied with orders and on request.

Technical content reviewed by M.R. Patel, Technical Head. Last updated 26 October 2026.

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