Description

Sodium Polystyrene Sulfonate is a high-purity, synthetic cation-exchange resin supplied as a fine, free-flowing powder. This versatile material is essential for applications requiring the selective removal of potassium and other cations from aqueous solutions. It is a critical component for pharmaceutical manufacturers, water treatment specialists, and research laboratories seeking reliable ion-exchange performance.

Application

• Pharmaceutical Formulations: Primary active ingredient in oral and rectal suspensions for the treatment of hyperkalemia (elevated blood potassium levels).
• Water Purification & Softening: Used in ion-exchange columns to remove calcium, magnesium, and heavy metal ions from process water and industrial effluents.
• Analytical Chemistry & Research: Serves as a stationary phase in ion-exchange chromatography for the separation and purification of proteins, nucleotides, and other biomolecules.
• Catalyst & Reaction Medium: Utilized as a solid acid catalyst or a support material in various organic synthesis reactions.
• Food & Beverage Processing: Employed for decolorization, deashing, and stabilization in the production of sugars, fruit juices, and alcoholic beverages.
• Nuclear Industry: Applied in the removal of radioactive cesium and other fission products from wastewater streams.

Basic Information

Product Name	Sodium Polystyrene Sulfonate
CAS No.	9080-79-9
Molecular Formula	(C8H7NaO3S)n
Molecular Weight	Variable (Polymer)
Synonyms	SPS; Polystyrene Sulfonate Sodium Salt; Sodium Polystyrene Sulphonate; Kayexalate; Resonium A; Kionex; PMS-500; Sodium Poly(styrenesulfonate); Poly(sodium 4-styrenesulfonate)
EINECS	Contact for details

Quality Control

Our Sodium Polystyrene Sulfonate is manufactured under a strict quality management system. We offer grades compliant with USP/NF, EP, and JP pharmacopeial standards for pharmaceutical applications. Every batch is supported by a comprehensive Certificate of Analysis (COA) detailing identity, purity, exchange capacity, and physical parameters to ensure it meets your specific requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at controlled room temperature (15-25°C). This product is hygroscopic (moisture-sensitive); the container must be kept tightly sealed to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	Fine, light yellow to brown powder
Identification (IR)	Conforms
Assay (on dried basis)	≥ 95.0 %
Loss on Drying	≤ 10.0 %
Sodium Content	9.4 - 11.0 %
Sulfonate Content	Contact for details
Exchange Capacity	≥ 2.5 mEq/g (dried)
Particle Size Distribution	Customizable

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