Polystyrene Sulfonic Acid
Polystyrene Sulfonic Acid (CAS:28210-41-5) is a strong-acid polyelectrolyte based on styrene sulfonic acid repeat units, typically supplied as an aqueous solution. Its dense sulfonic acid groups impart high proton conductivity, excellent dispersing power and strong electrostatic interactions, making it a key component in conductive polymers such as PEDOT:PSS dispersions, proton exchange membranes, ion-exchange resins and water-treatment antiscalants. With its Industrial Grade designation, every lot carries a complete certificate of analysis including assay, purity and physical data, giving QC teams everything needed for release testing. The product is backed by flexible 25kg/drum, 200kg/drum packaging, steady stock availability and export documentation, so customers can plan procurement with confidence and keep production running without interruption.
KieRay Chem is recognized as a reliable partner for Polystyrene Sulfonic Acid (CAS:28210-41-5), with dedicated production capacity, strict process control and a proven global track record. Batch-to-batch reproducibility is guaranteed by standardized production and full QC release, with COA, technical datasheets and safety files delivered with every order. Customized grades, pack sizes and dependable delivery schedules help customers maintain uninterrupted production and end-product quality worldwide. With a strong export record and customer-first service, KieRay Chem ensures every tonne of product meets the highest standards of purity and safety.
## Polystyrene Sulfonic Acid (PSSA, CAS 28210-41-5): Key Functions and Uses
1. **Water-Soluble Polyelectrolyte**
Polystyrene Sulfonic Acid, commonly abbreviated as **PSSA**, is a strongly acidic, water-soluble polymer containing sulfonic acid groups. Its high ionic character makes it useful in polymer science, aqueous formulations, and ion-transport research.
2. **Ion-Exchange Material**
PSSA can function as a cation-exchange polymer, helping exchange or bind positively charged ions in aqueous systems. This property supports research and applications involving water softening, ion separation, metal-ion recovery, and water-treatment formulations.
3. **Proton-Conducting Membrane Component**
The sulfonic acid groups enable proton transport, making Polystyrene Sulfonic Acid relevant to proton-exchange membrane research, fuel cells, redox-flow batteries, and other electrochemical systems. Performance depends on molecular weight, crosslinking, hydration, and membrane structure.
4. **Conductive Polymer and PEDOT:PSS Component**
PSSA is widely associated with conductive polymer systems, particularly **PEDOT:PSS**, where polystyrene sulfonate acts as a counterion and dispersing polyelectrolyte. These materials are studied for transparent electrodes, antistatic coatings, flexible electronics, printed electronics, and organic optoelectronic devices.
5. **OLED and Organic Electronics Research**
PSSA-containing formulations may be used in hole-injection or conductive layers for polymer-based light-emitting devices, OLED research, sensors, and thin-film electronics. Its film-forming and ionic properties can help support solution processing and surface modification.
6. **Reactive Emulsifier and Formulation Aid**
Because of its amphiphilic and ionic behavior, PSSA may be investigated as a reactive emulsifier, dispersant, stabilizer, or water-soluble polymer in coatings, inks, adhesives, and specialty formulations.
7. **Catalysis, Surface Treatment, and Materials Research**
The strong sulfonic acid functionality makes PSSA relevant to acid catalysis, surface functionalization, colloid stabilization, cement additives, dyeing auxiliaries, and the preparation of functional polymer networks.
8. **Quality, Procurement, and Safety Considerations**
When sourcing Polystyrene Sulfonic Acid 28210-41-5, buyers should verify acid or sodium-salt form, molecular weight, solid content, concentration, viscosity, pH, degree of sulfonation, counterion, residual monomers, packaging, and certificate of analysis. Useful SEO keywords include **Polystyrene Sulfonic Acid, PSSA, poly(styrenesulfonic acid), CAS 28210-41-5, PEDOT:PSS component, proton-exchange membrane, ion-exchange polymer, conductive polymer, water-treatment polymer, and antistatic material**. This product should be handled according to the supplier’s Safety Data Sheet. It should not be described as a medical or pharmaceutical product unless a specific approved grade and indication are documented.
Product Name: Polystyrene Sulfonic Acid
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