Description

Polystyrene Sulfonate, Ammonium Salt is a synthetic, water-soluble polymer derived from the sulfonation of polystyrene, subsequently converted to its ammonium salt form. This compound is valued for its strong anionic exchange capacity and selective binding properties, making it a critical functional material in advanced separation and purification processes. It is essential for industries requiring high-purity water treatment, sophisticated chromatographic separations, and the development of specialty ion-exchange resins and membranes.

Application

• Ion-Exchange Chromatography: Used as a stationary phase or packing material for the purification and analysis of proteins, peptides, and other biomolecules.
• Water Treatment & Demineralization: Employed in ion-exchange resins to remove anions and specific contaminants from process water and wastewater in power plants and industrial facilities.
• Pharmaceutical Purification: Serves as an excipient or processing aid in the purification steps of active pharmaceutical ingredients (APIs).
• Catalyst & Reaction Medium: Acts as a solid acid catalyst or a functionalized support in organic synthesis and polymerization reactions.
• Membrane Technology: Incorporated into the matrix of anion-exchange membranes for electrodialysis, fuel cells, and other electrochemical applications.
• Analytical Sample Preparation: Utilized in solid-phase extraction (SPE) cartridges for the selective isolation of analytes from complex matrices.

Basic Information

Product Name	Polystyrene Sulfonate, Ammonium Salt
CAS No.	29965-34-2
Molecular Formula	(C8H7O3S·H3N)n
Molecular Weight	Variable (Polymer)
Synonyms	Ammonium Polystyrene Sulfonate; Poly(sodium 4-styrenesulfonate) ammonium salt; PSS-NH4; Ammonium PSS; Poly(ammonium styrenesulfonate); Ammonium poly(styrenesulfonate); Ion-exchange resin, strong base, ammonium form; Ammonium salt of sulfonated polystyrene
EINECS	Contact for details

Quality Control

Our Polystyrene Sulfonate, Ammonium Salt is manufactured under a strict quality management system. Each batch undergoes comprehensive analytical testing to ensure consistent performance, including assessment of ion-exchange capacity, molecular weight distribution, and purity. Certificates of Analysis (COA) detailing all specifications are provided with every shipment to guarantee compliance with your application requirements.

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); the container must be kept tightly sealed after opening to prevent absorption of atmospheric moisture, which can affect performance.

Specification

Item	Specification
Appearance	White to off-white powder or beads
Identification (IR)	Conforms
Ion-Exchange Capacity	≥ 4.0 meq/g (dry basis)
Moisture Content	≤ 5.0 % (Karl Fischer)
Ash Content	≤ 0.5 %
Particle Size Distribution	As per customer requirement

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