Polyacrylic Acid (PAA 50%)ZEELCHEM™ 1000 · Manufacturer & Supplier
Polyacrylic Acid (PAA 50%) is a low molecular weight acrylic homopolymer used as a scale inhibitor and dispersant in cooling towers, low-pressure boilers and RO systems. ZEELCHEM™ 1000 controls calcium carbonate and calcium sulfate scale and keeps silt and particulates dispersed, at low sub-stoichiometric doses.
Polyacrylic Acid Chemical Identity
| Chemical name | Poly(acrylic acid), acrylic acid homopolymer |
|---|---|
| Synonyms | PAA, polyacrylic acid 50%, polyacrylate |
| Molecular formula | (C₃H₄O₂)ₙ |
| Repeat-unit mass | 72.06 g/mol |
| Polymer MW | 2,000 – 5,000 g/mol |
| CAS number | 9003-01-4 |
Polyacrylic Acid Specifications
Typical specification for ZEELCHEM™ 1000. Every batch is dispatched with a batch Certificate of Analysis (COA).
| Parameter | Specification |
|---|---|
| Chemical formula | (C₃H₄O₂)ₙ |
| CAS number | 9003-01-4 |
| Appearance | Clear pale amber liquid |
| Active content | 45.0 – 50.0% min |
| pH (neat, 25 °C) | 2.0 – 3.0 |
| Specific gravity | 1.18 – 1.25 g/cm³ |
| Free monomer | < 0.5% max |
| Molecular weight | 2,000 – 5,000 g/mol |
Applications & Recommended Dosing
Typical starting doses. Final dosing depends on your water analysis and system conditions; our chemists can help you optimize it.
| Application | Dose |
|---|---|
| Open cooling towers | 5.0 – 20.0 ppm active |
| Low-pressure boilers (< 40 bar) | 10.0 – 30.0 ppm |
| RO antiscalant blends | 2.0 – 6.0 ppm |
| Textile scouring auxiliaries | 1.0 – 3.0 g/L |
- Open recirculating cooling towers
- Low-pressure steam boilers
- RO antiscalant formulations
- Textile scouring & anti-redeposition
- Detergent builders
How Polyacrylic Acid Works
Threshold inhibition
Sub-stoichiometric doses stop calcium salts from nucleating and precipitating.
Crystal lattice distortion
Adsorbs on growing crystals, so any scale that forms is soft and non-adherent.
Electrostatic dispersion
The anionic charge keeps silt, iron oxides and particulates suspended.
Key Benefits
- More than 98.5% threshold efficiency against CaCO₃ scale
- Low molecular weight: strong dispersion without raising water viscosity
- Compatible with oxidizing biocides at 0.2–1.0 ppm free chlorine
- Blends well with HEDP and PBTC in combined programmes
- Free monomer below 0.5% for consistent, clean performance
How much Polyacrylic Acid do you need?
Packaging, Storage & Safety
⬢Packaging
- 50 kg HM-HDPE carboys
- 250 kg HDPE drums
- 1,250 kg IBC totes
- Bulk road tankers
❄Storage & Shelf Life
- Store at 5 °C – 40 °C in a cool, dry, ventilated area
- Keep away from direct sunlight, freezing and strong oxidizers
- Shelf life: 12 months in unopened original containers
⚠Handling & Safety
- Acidic liquid: avoid contact with skin and eyes
- Wear chemical splash goggles, nitrile or neoprene gloves and a PVC apron
- On contact, flush with plenty of water
Always read the Safety Data Sheet (MSDS/SDS) before handling. Pan-India dispatch from Vadodara, Gujarat.
TDS, MSDS & COA for Polyacrylic Acid
Request documents instantly on WhatsApp. ZEEL PRODUCT is ISO 9001:2015, ISO 14001:2015 & ISO 22000:2018 certified.
Safety Data Sheet (MSDS)
16-section GHS-format safety, handling and transport information.
Request MSDS →Polyacrylic Acid: Frequently Asked Questions
What is polyacrylic acid (PAA 50%) and how does it prevent scale?
PAA 50% is an anionic, low molecular weight acrylic homopolymer. It prevents scale by threshold inhibition, crystal lattice distortion and electrostatic dispersion of particles.
What is the recommended dosage of polyacrylic acid?
Typical dosing is 5–20 ppm active in open cooling towers, 10–30 ppm in boilers below 40 bar, and 2–6 ppm active in RO antiscalant blends.
Is PAA compatible with chlorine and oxidizing biocides?
Yes. ZEELCHEM™ 1000 stays stable with chlorine, sodium hypochlorite, bromine and chlorine dioxide at normal free-chlorine residuals of 0.2–1.0 ppm.
What is the molecular weight of ZEELCHEM™ 1000?
2,000–5,000 g/mol. This low range gives strong scale inhibition and dispersion without increasing water viscosity.
What is the difference between PAA and PMA?
PAA suits cooling towers, RO systems and boilers up to about 150 °C. Polymaleic acid (PMA) is stable up to 300 °C, so it is preferred for high-pressure boilers and thermal desalination.
Is polyacrylic acid used in textiles and detergents?
Yes. PAA is used as an anti-redeposition agent and dispersant in textile scouring baths at 1–3 g/L, and as a builder in industrial detergents.
What packaging is available for PAA 50%?
50 kg HDPE carboys, 250 kg HDPE drums, 1,250 kg IBC totes and bulk road tankers.
What are the storage conditions and shelf life?
Store at 5–40 °C in a cool, dry, ventilated warehouse away from sunlight, freezing and strong oxidizers. Shelf life is 12 months in unopened original containers.
What safety equipment is needed to handle PAA?
Chemical splash goggles, nitrile or neoprene gloves, a PVC apron and good ventilation. Flush any skin or eye contact with plenty of water.
Do you supply TDS, MSDS and COA with polyacrylic acid?
Yes. Every consignment ships with a batch Certificate of Analysis, and the Technical Data Sheet and 16-section GHS Safety Data Sheet are available on request.
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