Poly(maleicanhydride-acrylicacidcopolymer) (CAS 26677-99-6), commonly known as MA/AA, is a low molecular weight polyelectrolyte. It is produced by the copolymerization of maleic anhydride and acrylic acid in a specific ratio. MA/AA exhibits exceptional threshold inhibition and dispersion properties, particularly against calcium carbonate and calcium sulfate scales. Its structural stability allows it to remain effective at high temperatures (up to 300°C), making it an indispensable additive in circulating cool water systems, low-pressure boilers, and as a powerful builder in textile dyeing and household detergent formulations.

1. Exceptional Thermal Stability

• Advantage: Unlike standard polyacrylic acids, MA/AA maintains its chelating efficiency even under high-temperature and high-pH conditions.

• Benefit: Reliable Protection: Perfect for high-pressure boilers and distillation units where other scale inhibitors might decompose, ensuring continuous operation without mineral buildup.

2. Dual Action: Inhibition & Dispersion

• Advantage: It effectively prevents the growth of crystals while simultaneously dispersing any formed particles to prevent settling.

• Benefit: Reduced Maintenance: Keeps heat exchange surfaces clean and maximizes thermal efficiency, significantly extending the time between equipment cleanings.

3. Synergistic Detergency Enhancement

• Advantage: Acts as a powerful chelating agent for calcium and magnesium ions in hard water.

• Benefit: Brighter Cleaning: When added to detergents or textile auxiliaries, it prevents soil redeposition and ensures vibrant colors in fabric processing by sequestering interfering metal ions.

Industrial Water Treatment

Used in circulating cool water systems, oilfield refill water, and low-pressure boilers to prevent scale formation and corrosion.

Detergent Industry

Acts as a builder and dispersant in household and industrial detergents to improve cleaning efficiency in hard water.

Textile & Dyeing

Functions as a chelating dispersant in textile printing and dyeing to remove impurities and prevent mineral interference with dyes.

Ceramic & Paper Making

Utilized as a high-performance dispersant for slurries, maintaining optimal viscosity and flow characteristics.

• Standard Packaging: 25kg or 250kg plastic drums; 1250kg IBC tanks.

• Loading Capacity (20' FCL):

  • 20 - 24 MT per 20' FCL depending on palletization and drum size.

• Storage: Store in a cool, dry, and well-ventilated area. Crucial: Avoid contact with skin and eyes; use appropriate PPE. The product is acidic; avoid storage in carbon steel containers for extended periods—use plastic or stainless steel.

MA/AA; Copolymer of Maleic and Acrylic Acid; Poly(maleic anhydride-co-acrylic acid); Acrylic acid-maleic anhydride copolymer.

• HEDP (CAS 2809-21-4) —— Frequently blended with MA/AA for synergistic scale inhibition.

• Benzotriazole (BTA) (CAS 95-14-7) —— Added for copper corrosion protection in water systems.

• Sodium Hypochlorite (CAS 7681-52-9) —— Used as a biocide in systems treated with MA/AA.

• Polyacrylic Acid (PAA) (CAS 9003-01-4) —— A related polymer often used in specific water conditions.

• Zinc Sulfate (CAS 7733-02-0) —— Sometimes combined with MA/AA to enhance corrosion inhibition.

Q: How do you handle the risk of acidity during shipping and storage?

A: Since MA/AA is an acidic polymer (pH 2.0-3.0), we exclusively use UN-certified high-density polyethylene (HDPE) drums or IBC tanks. These are resistant to corrosion and ensure the product reaches you without leaking or degrading.

Q: We use this in high-temperature boilers; will it break down?

A: No. One of the primary advantages of our MA/AA (CAS 26677-99-6) is its thermal stability. It can withstand temperatures up to 300°C, making it much more effective for boiler applications than standard PAA or other organic phosphonates.

Q: Is the color of the liquid indicative of quality?

A: Our standard MA/AA is amber to colorless. While slight color variations occur between batches due to the polymerization process, we guarantee the solid content and scale inhibition rate (typically >90% for CaCO3) are consistent regardless of the amber shade.

Q: Can this be used in "Green" or low-phosphorus formulations?

A: Yes. Our MA/AA is a phosphorus-free scale inhibitor. This makes it an ideal choice for facilities that have strict discharge limits on phosphorus (P) levels in their wastewater.

Q: What is the shelf life, and does it settle?

A: The shelf life is 12 months when stored in original sealed packaging. It is a stable copolymer solution and does not typically settle or delaminate under normal warehouse temperatures.