Description

Sodium Polystyrene Sulfonate is a high-purity, synthetic ion-exchange resin supplied as a fine, free-flowing powder. This compound is critical for applications requiring the selective removal of potassium ions from aqueous solutions, offering a reliable and efficient solution for managing ionic balance. It is an essential material for the pharmaceutical industry, water treatment processes, and various specialty chemical manufacturing sectors where precise ion control is paramount.

Application

• Pharmaceutical Ingredient: Primary use as a potassium-binding agent in oral and rectal suspension formulations for the treatment of hyperkalemia.
• Water Purification & Softening: Used in ion-exchange columns and cartridges to remove hardness ions (calcium, magnesium) and other cations from process water and effluents.
• Catalyst & Reaction Medium: Serves as a solid acid catalyst or a support medium in organic synthesis and polymerization reactions.
• Analytical Chemistry: Employed in chromatography as a stationary phase for the separation of cations, amino acids, and proteins.
• Food & Beverage Processing: Utilized for demineralization and decolorization in sugar refining, juice clarification, and wine stabilization.
• Nuclear Industry: Applied in the removal of radioactive cations from wastewater streams in nuclear facilities.

Basic Information

Product Name	Sodium Polystyrene Sulfonate
CAS No.	62744-35-8
Molecular Formula	(C8H7SO3Na)n
Molecular Weight	Variable (Polymer)
Synonyms	SPS; Polystyrene Sulfonic Acid Sodium Salt; Sodium Polystyrene Sulphonate; Kayexalate; Resonium A; Sodium PSS; Poly(sodium 4-styrenesulfonate); Sodium Poly(styrenesulfonate); Styrenesulfonic Acid Sodium Salt Polymer
EINECS	263-710-7

Quality Control

Our Sodium Polystyrene Sulfonate is manufactured under strict quality management systems. We offer grades compliant with USP-NF and Pharmaceutical standards, ensuring it meets the rigorous requirements for medical applications. Every batch undergoes comprehensive analytical testing, including assay, ion-exchange capacity, and impurity profiling. A Certificate of Analysis (COA) documenting purity, physical characteristics, and performance metrics is provided with each shipment.

Storage

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

Specification

Item	Specification
Appearance	Fine, light yellow to brown powder
Identification (IR)	Conforms to Standard
Assay (as SPS)	≥ 95.0 %
Ion Exchange Capacity	≥ 2.8 mEq/g (dry basis)
Loss on Drying	≤ 10.0 %
Sulfate Ash	Contact for details
Particle Size Distribution	Customizable (50-400 mesh typical)
Heavy Metals (as Pb)	≤ 20 ppm

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