Description

Polystyrene Sulfonic Acid is a high molecular weight, strongly acidic cation exchange resin derived from sulfonated polystyrene. This compound is valued for its exceptional ion exchange capacity, chemical stability, and versatility as a solid acid catalyst or proton conductor. It serves as a critical functional material in advanced chemical synthesis, water treatment, and energy applications. Industries ranging from pharmaceuticals and fine chemicals to electronics and environmental technology rely on its consistent performance.

Application

• Solid Acid Catalyst: Used in organic synthesis reactions such as esterification, alkylation, and hydrolysis, offering an efficient, recoverable, and non-corrosive alternative to liquid mineral acids.
• Ion Exchange Resin: Employed in water purification and demineralization systems to remove cations like calcium, magnesium, and heavy metals from process water and effluents.
• Proton Exchange Membranes (PEMs): A key component in fuel cells and electrolyzers, where it facilitates proton conduction while providing mechanical and chemical stability.
• Chemical Synthesis Intermediate: Acts as a polymeric reagent or support for synthesizing other functional materials, dyes, and pharmaceutical intermediates.
• Analytical Chemistry: Utilized in chromatography as a stationary phase for the separation of cations, amino acids, and other charged molecules.
• Electronics & Sensors: Incorporated into conductive polymer composites and humidity or chemical sensing devices.

Basic Information

Product Name	Polystyrene Sulfonic Acid
CAS No.	28210-41-5
Molecular Formula	(C8H8O3S)n
Molecular Weight	Variable (based on degree of sulfonation and polymerization)
Synonyms	Poly(styrenesulfonic acid); PSS; PSSA; Polystyrene sulfonate; Sulfonated polystyrene; Poly(sodium 4-styrenesulfonate) (acid form); Poly(4-styrenesulfonic acid); Cation exchange resin (strong acid); Nafion precursor
EINECS	Contact for details

Quality Control

Our Polystyrene Sulfonic Acid is manufactured under a strict quality management system. Each batch is tested to ensure it meets precise specifications for ion exchange capacity, acid capacity, molecular weight distribution, and purity. A comprehensive Certificate of Analysis (COA) is provided with every shipment, detailing results for key parameters. We support compliance with relevant industry standards and can provide material tailored to specific application requirements upon request.

Storage

Preserve in a tightly closed container, protected from light. This material is hygroscopic (moisture-sensitive) and should be stored in a cool, dry place at room temperature (15-25°C). Ensure the storage area is well-ventilated. Keep away from strong bases and oxidizing agents.

Specification

Item	Specification
Appearance	Light yellow to brown beads or powder
Identification (IR)	Conforms to structure
Ion Exchange Capacity	≥ 4.0 meq/g (H+ form, dry)
Acid Capacity	Contact for details
Moisture Content	< 5.0 %
Particle Size	Customizable (e.g., 20-50 mesh)
Ash Content	< 0.1 %

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