Sodium polystyrene sulfonate

Sodium polystyrene sulfonate (CAS 9080-79-9) is a synthetic cation-exchange resin.

Where is Sodium polystyrene sulfonate used?

• Pharmaceutical manufacturing: active substance in oral and rectal potassium-binding preparations for elevated potassium levels
• Renal care: API for drug products and clinical treatments
• Water treatment: removal of hardness-causing calcium and magnesium ions from process streams
• Biotechnology and life sciences: polyelectrolyte in layer-by-layer coating systems for microencapsulation
• Aqueous formulations: rheology-modifying behaviour supports thickening or stabilising
• It selectively binds positively charged ions in solution, enabling controlled removal or exchange of specific cations.

Good to know: Pharmaceutical-grade material is available to USP and BP specifications; technical-grade forms serve industrial and research procurement where pharmacopeial compliance is not required.