What is Polymaleic Acid and how is it identified?

Polymaleic acid, also called HPMA or hydrolyzed polymaleic anhydride, is a water-soluble polymeric carboxylic acid with CAS 26099-09-2 and the general formula (C₄H₄O₄)ₙ. It is normally supplied as a liquid or aqueous polymer solution, and custom molecular-weight grades can be requested.

Which specifications matter when purchasing Polymaleic Acid?

Confirm solids or active polymer content, pH, viscosity, molecular weight range, color and residual monomer. Because molecular weight can affect scale-inhibition and dispersion performance, the batch analysis should state the actual specification for the intended water-treatment system.

What is Polymaleic Acid used for?

It is used as a scale inhibitor and dispersant in cooling water, boiler water, oilfield water injection and industrial circulating water. It can also be formulated with zinc salts or other corrosion inhibitors to improve metal-surface protection.

How should Polymaleic Acid be stored and handled?

Store in closed, corrosion-resistant containers in a cool, ventilated area away from strong oxidizers and incompatible materials. Avoid skin and eye contact during transfer, and use chemical-resistant PPE because the product is acidic.

Polymaleic Acid CAS 26099-09-2

Polymaleic Acid (HPMA), CAS 26099-09-2, is a water-soluble polymeric scale inhibitor and dispersant for industrial water treatment. Confirm the required grade, molecular weight and handling requirements for the intended system.

CAS: 26099-09-2
Synonyms: Hydrolyzed Polymaleic Anhydride, HPMA, Poly(maleic acid), Polymaleic acid liquid, Maleic acid polymer
Molecular Formula: (C₄H₄O₄)ₙ
Grade: Industrial grade 99%
Package: 200kg iron drum or 50kg plastic drum packing，Custom Molecular Weight (Mw) available upon request (e.g., 2kDa - 100kDa)

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Product Description

Polymaleic Acid (HPMA) is a water-soluble polymeric carboxylic acid identified by CAS 26099-09-2.

Synonyms: Hydrolyzed Polymaleic Anhydride; HPMA; Poly(maleic acid); Polymaleic acid liquid; Maleic acid polymer.

CAS: 26099-09-2.

Molecular formula: (C₄H₄O₄)ₙ.

Molecular weight: polymer, typically about 2000 or as specified; custom molecular-weight grades can be requested.

It is normally supplied as a light yellow to brownish-red clear liquid or aqueous polymer solution.

It is used as a scale inhibitor and dispersant in cooling water, boiler water, oilfield water injection and industrial circulating water.

It slows and prevents the precipitation and scaling of insoluble substances on metal surfaces, maintaining equipment life and heat-transfer performance.

It can also be formulated with zinc salts or other corrosion inhibitors to improve metal-surface protection.

Confirm solids or active polymer content, pH, viscosity, molecular weight range, color and residual monomer.

Store in closed, corrosion-resistant containers in a cool, ventilated area away from strong oxidizers and incompatible materials; the product is acidic, so use chemical-resistant PPE.

Confirm the current product-specific specification.

Confirm packaging with the requested quantity and destination requirements.

Document requirements should be confirmed from the current specification, SDS, COA, or other product-specific files.

Regulated-use suitability must be confirmed separately with current product-specific documentation.

The page is an RFQ entry point and does not state stock, price, MOQ, or fixed lead time.

For an RFQ, state the intended use, required specification, quantity, packaging, destination, and document needs.

FAQ - Technical & Supply Chain

Q:
What is Polymaleic Acid and how is it identified?

A: Polymaleic acid, also called HPMA or hydrolyzed polymaleic anhydride, is a water-soluble polymeric carboxylic acid with CAS 26099-09-2 and the general formula (C₄H₄O₄)ₙ. It is normally supplied as a liquid or aqueous polymer solution, and custom molecular-weight grades can be requested.
Q:
Which specifications matter when purchasing Polymaleic Acid?

A: Confirm solids or active polymer content, pH, viscosity, molecular weight range, color and residual monomer. Because molecular weight can affect scale-inhibition and dispersion performance, the batch analysis should state the actual specification for the intended water-treatment system.
Q:
What is Polymaleic Acid used for?

A: It is used as a scale inhibitor and dispersant in cooling water, boiler water, oilfield water injection and industrial circulating water. It can also be formulated with zinc salts or other corrosion inhibitors to improve metal-surface protection.
Q:
How should Polymaleic Acid be stored and handled?

A: Store in closed, corrosion-resistant containers in a cool, ventilated area away from strong oxidizers and incompatible materials. Avoid skin and eye contact during transfer, and use chemical-resistant PPE because the product is acidic.

Ordering & Documentation

Key information for document requests, quotations, and supply planning.

Documents

COA, TDS, SDS/MSDS and packing details are available on request.

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Send the CAS number, grade, quantity, packing preference and destination.

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