Description

Poly(Vinylsulfonic Acid, Sodium Salt) is the sodium salt form of polyvinylsulfonic acid, a water-soluble anionic polymer. This compound is valued for its strong polyelectrolyte characteristics, providing excellent dispersing, chelating, and scale-inhibiting properties in aqueous systems. It is a critical functional additive for industries requiring advanced water treatment, mineral processing, and the formulation of high-performance coatings and detergents.

Application

• Water Treatment: Acts as a highly effective scale and corrosion inhibitor in cooling water, boiler water, and reverse osmosis systems.
• Mineral Processing & Papermaking: Serves as a powerful dispersant and chelating agent for pigments, fillers (like calcium carbonate), and clay slurries.
• Detergent & Cleaning Formulations: Enhances the performance of industrial and institutional cleaners by preventing redeposition of soil and sequestering metal ions.
• Coatings & Paints: Used as a grinding aid and dispersant to stabilize pigment suspensions and improve color development.
• Textile Industry: Functions as an antistatic agent and dyeing auxiliary to improve process uniformity.
• Enhanced Oil Recovery (EOR): Investigated for use in polymer flooding to modify the rheology of injection water.
• Biomedical Research: Employed in biochemical assays and as a model polyanion in studies of protein-polymer interactions.

Basic Information

Product Name	Poly(Vinylsulfonic Acid, Sodium Salt)
CAS No.	25053-27-4
Molecular Formula	(C2H3NaO3S)n
Molecular Weight	~ 1,000 - 100,000 g/mol (Polymer, variable)
Synonyms	Poly(sodium vinylsulfonate); Sodium poly(vinylsulfonate); PVS, Na salt; Poly(vinylsulfonic acid) sodium salt; Sodium polystyrene sulfonate (related polymer class); Vinylsulfonic acid sodium salt polymer; Anionic polyelectrolyte; PSSNa (common abbreviation)
EINECS	246-587-5

Quality Control

Our Poly(Vinylsulfonic Acid, Sodium Salt) is manufactured under a strict quality management system. Each batch undergoes comprehensive analytical testing to ensure consistent performance, including assay (sulfonate content), molecular weight distribution, pH, and residual monomer levels. A Certificate of Analysis (COA) documenting these parameters is provided with every shipment to guarantee compliance with your specifications.

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). Keep the container tightly sealed when not in use to prevent absorption of atmospheric moisture, which may affect product performance.

Specification

Item	Specification
Appearance	White to off-white powder or solution
Assay (as sulfonate)	≥ 95.0 %
pH (1% aqueous solution)	6.0 - 9.0
Loss on Drying	≤ 5.0 %
Sulfate (as SO4)	≤ 0.5 %
Heavy Metals (as Pb)	≤ 10 ppm
Viscosity (of solution, typical)	Contact for details
Molecular Weight (Mw, typical)	Contact for details

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