Description

Polymaleic Acid CAS NO 26099-09-2 is a low molecular weight, water-soluble polymer derived from maleic anhydride, functioning as a highly effective scale and corrosion inhibitor. Its value lies in its superior chelating and dispersing power compared to traditional polyacrylates, particularly against phosphate and carbonate scales. This makes it an essential chemical for water treatment specialists, oilfield service companies, and industrial cleaning formulators seeking to protect critical infrastructure and improve operational efficiency.

Application

• Industrial Water Treatment: Primary application as a threshold scale inhibitor for cooling water systems, boilers, and reverse osmosis (RO) membranes, effectively controlling calcium carbonate, calcium phosphate, and barium sulfate deposition.
• Oilfield Chemistry: Key component in squeeze treatment formulations and production chemicals to prevent mineral scale in downhole formations and topside equipment, enhancing well productivity and flow assurance.
• Detergent & Cleaning Formulations: Acts as a builder and dispersant in industrial and institutional cleaning products, preventing redeposition of dirt and sequestering metal ions that interfere with cleaning.
• Pulp & Paper Processing: Used as a dispersant to control pitch and stickies, and as a chelant in bleaching sequences to improve pulp brightness and process efficiency.
• Textile Auxiliary: Serves as an anti-precipitant and dispersant in dyeing and finishing baths to prevent spotting and ensure uniform color application.
• Ceramic & Construction: Employed as a grinding aid and dispersant in ceramic slips and concrete admixtures to reduce water content and improve particle distribution.

Basic Information

Product Name	Polymaleic Acid
CAS No.	26099-09-2
Molecular Formula	(C4H4O4)n
Molecular Weight	~400-5000 g/mol (variable)
Synonyms	Poly(maleic acid); Maleic acid homopolymer; Hydrolyzed poly(maleic anhydride); PMA; HPMA; Polymaleate; 2-Butenedioic acid (2Z)-, homopolymer; Belclene 200; Sokalan PM series
EINECS	Contact for details

Quality Control

Our Polymaleic Acid is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure consistent performance as a scale inhibitor. Key parameters such as solid content, pH, viscosity, and residual monomer levels are verified. A Certificate of Analysis (COA) documenting these results is provided with every shipment to guarantee compliance with your technical requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep away from strong bases and oxidizing agents. For long-term storage, ensure the container is kept tightly sealed to prevent moisture absorption or evaporation.

Specification

Item	Specification
Appearance	Clear to pale yellow viscous liquid
Solid Content	≥ 48.0 %
pH (1% aqueous solution)	2.0 - 3.0
Density (25°C)	1.18 - 1.22 g/cm³
Brookfield Viscosity (25°C)	≤ 500 mPa·s
Free Maleic Acid	≤ 1.0 %

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.