HPMA/Hydrolyzed Polymaleic Anhydride

HPMA Chemical: Water treatment additive that prevents scale formation and corrosion.

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Hydrolyzed Polymaleic Anhydride

  • CAS Number: 26099-09-2
  • UN NO.: 3265
  • Molecular Formula:(C4H2O3)x(C4H5NO3)y(C4H6NO4)z
  • Purity (%): ≥48
  • Appearance:Light yellow to brownish red transparent liquid
  • Packing: 25kg or 250kg drum, or as customers' requirement.
  • Other Name: HPMA, Polymaleic Acid (PMA), Poly(maleic acid)
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Hydrolyzed Polymaleic Anhydride Specification

PRODUCT LIST

Why Choose HPMA

HPMA Liquid
  • Extreme Temperature Tolerance: Remains effective at temperatures up to 300°C, significantly outperforming traditional phosphonates and polyacrylic acids.
  • Superior Calcium Carbonate Control: Highly efficient at inhibiting CaCO3 scale through both threshold inhibition and crystal lattice distortion.
  • Excellent Compatibility: HPMA is non-toxic, easily biodegradable, and can be compounded with zinc salts or phosphonates (like HDTMPA) for synergistic corrosion and scale inhibition.
  • High Tolerance to Chlorine: Maintains structural integrity even in systems using high levels of oxidising biocides.

Hydrolyzed Polymaleic Anhydride Uses

  • Cooling Water Systems: Prevents scale buildup on heat transfer surfaces and protects metal components from corrosion.
  • Boiler Water Treatment: Improves heat transfer efficiency and extends equipment lifespan by controlling scale and corrosion.
  • Industrial Processes: Protects equipment in pulp, paper, textile, and oilfield operations by suppressing mineral deposits.
  • Reverse Osmosis (RO): Maintains membrane efficiency by inhibiting scaling from minerals and salts.
  • Detergent Formulations: Acts as a builder and chelating agent, boosting cleaning power by preventing hardness ions from precipitating.

FAQ of Hydrolyzed Polymaleic Anhydride

HPMA offers much higher thermal stability and a better tolerance for high-alkalinity (high pH) water than PAA. While PAA is effective in standard cooling towers, HPMA is required for boilers and desalination units where temperatures exceed 100°C.

Yes. HPMA is considered a “green” chemical in water treatment because it is phosphorus-free and has better biodegradability than many nitrogen-containing phosphonates.

Absolutely. HPMA is highly resistant to oxidative degradation, making it ideal for systems that use chlorine or bromine as biocides.
Hydrolyzed Polymaleic Anhydride Package

HMPA Suppliers

As an integrated HPMA manufacturer, Hoochchemtec ensures your procurement timeline is predictable and cost-effective, offering high-purity liquid polymers designed for global export.

  • Production Capacity: 8,000 MT per annum.
  • Port of Loading: Primarily Qingdao or Shanghai (strategically located to minimize inland transit and secure lower ocean freight rates).
  • Lead Time: 7–10 days for standard 48% concentration orders; 14 days for specialized bulk blending.

The HOO CHEMTEC Advantage: Why B2B Partners Trust Us

We don’t just ship chemicals; we provide supply chain security and technical reliability for high-stress thermal environments.

  • Factory-Direct Pricing: Eliminate trading markups and benefit from stable, competitive wholesale rates directly from our polymer synthesis facility.
  • Thermal Stability Assurance: Our HPMA is batch-tested to ensure performance at temperatures up to 300°C, making it the most reliable choice for desalination and high-pressure boiler Formulators.
  • Regulatory & ESG Compliance: Full GHS-compliant SDS (available in 10+ languages) and REACH registration support, ensuring seamless customs clearance and environmental compliance for EU and North American markets.
  • Flexible Industrial Packaging: Available in 250kg HDPE drums, 1250kg IBC Totes, or Flexitanks for high-volume efficiency.
 

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