Description

Poly(Styrene-Alt-Maleic Acid) Sodium Salt is a high-performance synthetic copolymer widely utilized as a dispersant, scale inhibitor, and rheology modifier. Its alternating structure provides excellent chelating and sequestering properties, making it a critical component for controlling water chemistry and stabilizing formulations. This product is essential for industries requiring reliable performance in aqueous systems, from industrial water treatment to advanced material synthesis.

Application

• Industrial Water Treatment: Acts as a highly effective dispersant and antiscalant in cooling water, boiler water, and reverse osmosis systems.
• Detergent & Cleaning Formulations: Serves as a builder and co-builder to enhance cleaning efficiency by sequestering hardness ions like calcium and magnesium.
• Paints & Coatings: Functions as a pigment dispersant and grinding aid, improving color development and stability in aqueous coating systems.
• Paper & Pulp Industry: Used as a retention aid and dispersant to improve paper quality and production efficiency.
• Textile Processing: Employed in dyeing and printing processes to improve color uniformity and fastness.
• Ceramic & Construction Materials: Acts as a grinding aid and plasticizer in cement, ceramic slips, and gypsum formulations.
• Oilfield Chemicals: Utilized in drilling fluids and production chemicals for scale inhibition and clay dispersion.
• Personal Care Products: Incorporated into select formulations as a viscosity modifier and stabilizer.

Basic Information

Product Name	Poly(Styrene-Alt-Maleic Acid) Sodium Salt
CAS No.	25736-61-2
Molecular Formula	(C12H8O4·xNa)n
Molecular Weight	Varies by degree of polymerization and neutralization
Synonyms	Sodium polystyrene-alt-maleate; SMA® Sodium Salt; Poly(styrene-co-maleic acid) sodium salt; Styrene Maleic Anhydride Copolymer Sodium Salt; PSMA Na Salt; SMA 1000 Na; SMA 2000 Na; SMA 3000 Na
EINECS	Contact for details

Quality Control

Our Poly(Styrene-Alt-Maleic Acid) Sodium Salt is manufactured under a stringent quality management system. Each batch undergoes rigorous analytical testing to ensure consistent performance, including assay, molecular weight distribution, and residual monomer content. Certificates of Analysis (COA) documenting key parameters are available upon request to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). This material is hygroscopic (moisture-sensitive); ensure containers are sealed immediately after use to prevent absorption of atmospheric moisture, which can affect flow properties and performance.

Specification

Item	Specification
Appearance	White to off-white powder or granules
Identification (IR)	Conforms to structure
Assay (as sodium salt)	≥ 95.0%
pH (1% aqueous solution)	6.0 - 8.0
Moisture Content	≤ 5.0%
Residual Styrene	≤ 100 ppm
Viscosity (25°C, 25% sol.)	Contact for details
Molecular Weight (Mw)	Grade dependent (e.g., 1,000 - 10,000)

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