Copolymer of maleic and acrylic acid

Copolymer of Maleic and Acrylic Acid is a high-performance polyelectrolyte primarily used as a scale inhibitor and dispersant. In industrial water treatment, it effectively prevents the precipitation of carbonates and phosphates. In the textile and dyeing industry, it acts as a chelating agent to sequester metal ions, ensuring color consistency and preventing fabric harshness.

Buyers must evaluate the Solid Content (typically 48-52%), Free Monomer content (lower is better for safety), and Molecular Weight. For detergent applications, a specific Calcium Chelating Capacity (mg CaCO3/g) is critical. Ensure the pH value (usually 2.0-3.0 for acidic versions) aligns with your formulation requirements to avoid neutralization costs.

Suppliers must provide a valid SDS (Safety Data Sheet) compliant with GHS standards. For exports to Europe, REACH registration is essential. If the product is used in food-contact cleaning or water treatment, verify compliance with FDA 21 CFR or local drinking water safety certifications like NSF/ANSI 60.

MA/AA offers superior thermal stability and higher calcium tolerance compared to PAA. It is more effective in high-temperature environments (up to 200°C) and high-alkalinity conditions, making it the preferred choice for low-pressure boilers and centralized cooling systems where PAA might fail.

Since MA/AA is often acidic, it must be packed in corrosion-resistant containers, typically 200L plastic drums or 1000L IBC tanks. For cross-border shipping, ensure the packaging has UN Certification marks. Always verify the IMDG (International Maritime Dangerous Goods) classification; while often classified as non-hazardous, some concentrated versions may require specific handling.

Request a Pre-Shipment Inspection (PSI) by third parties like SGS or Intertek to verify active ingredient concentrations. Utilize Made-in-China.com’s Secured Trading services to ensure payment is only released upon confirmation of shipping documents. Always request a Batch COA (Certificate of Analysis) before the goods leave the factory.

Prices are heavily influenced by the cost of raw materials like Maleic Anhydride and Acrylic Acid. Negotiate based on volume tiers (e.g., 20ft FCL vs. LCL) and consider long-term framework agreements to lock in prices. Ask for a breakdown of the active matter percentage to ensure you are not paying premium prices for diluted solutions.

The most common pitfall is insufficient documentation for customs clearance, leading to high port storage fees. Ensure the supplier provides a Non-Dangerous Goods Certificate (if applicable) and a clear HS Code (typically 390690). For winter shipments to cold climates, confirm the freezing point of the liquid to prevent container damage or product crystallization.