Acrylic acid-maleic anhydride copolymer

Acrylic acid-maleic anhydride copolymer (CAS 26677-99-6) is a synthetic polymer used in water treatment, construction, and industrial process chemistry.

Where is Acrylic acid-maleic anhydride copolymer used?

• Water treatment: scale inhibitor, dispersant, and corrosion inhibitor controlling mineral deposits
• Water treatment: prevents calcium carbonate, calcium sulfate, and other mineral scales on heat exchanger surfaces and cooling tower equipment
• Textile and paper processing: sequesters hardness ions and improves process water quality
• Construction chemistry: modifies rheology of cementitious formulations, controlling workability and retarding premature stiffening
• Metalworking and industrial lubricants: corrosion inhibitor and dispersant keeping metal fines suspended
• It keeps contaminants from depositing on equipment surfaces, extending machinery life.
• Used as a complexing agent in enhanced ultrafiltration treatment of nickel-containing wastewater.
• Used as a chelating agent in detergent formulations.
• Used as a process additive in petrochemical applications.

Formulation notes

• For scale inhibition in water treatment, the dosage is 2-10 ppm.
• For use with other organic phosphates, the preferred dosage is 2–10 mg/L.
• The presence of NaCl and Na2SO4 reduces the rejection of nickel ions.

Typical specification

• Solid content of at least 48.0%.
• pH of 2.0 to 3.0 in 1% solution.
• Remains usable at high temperatures up to 300°C.
• Calcium ion sequestration capacity of 150-350 mg CaCO₃ per gram.
• Brown transparent liquid appearance.

Storage, packaging and handling

• May crystallize below -5 °C and returns to solution form at room temperature.
• Remains stable for a minimum of 12 months under suitable conditions.
• Available in 200L plastic drums, IBC (1000L), or according to customer requirements.

Frequently asked questions about Acrylic acid-maleic anhydride copolymer

What is the environmental profile of acrylic acid-maleic anhydride copolymer in water softening?

It serves as an environmentally friendly alternative to phosphonates in water softening processes.

Technical content is compiled and updated by the SoleChem product team from public technical sources; the certificate of analysis (COA) governs product-specific specifications.