Description

p-Styrenesulfonic Acid Potassium Salt is a versatile and highly functional monomer used extensively in polymer chemistry. This compound is valued for its ability to impart permanent anionic charge and hydrophilicity to polymeric materials, significantly enhancing their performance characteristics. It is a critical raw material for manufacturers in the water treatment, specialty coatings, and advanced material science sectors seeking to develop products with superior ionic conductivity, anti-fouling properties, or controlled release capabilities.

Application

• Ion-Exchange Resins & Membranes: A key monomer for manufacturing strong acid cation exchange resins used in water softening, demineralization, and chromatographic separation processes.
• Conductive Polymers & Battery Materials: Used to synthesize polyelectrolytes for fuel cell membranes, lithium-ion battery binders, and conductive layers in electronic devices.
• Hydrogels & Superabsorbent Polymers (SAP): Imparts ionic functionality and swelling capacity in hydrogels for medical, agricultural, and personal care applications.
• Dispersants & Stabilizers: Acts as a polymeric dispersant for pigments, ceramics, and cement, improving suspension stability and flow properties.
• Antistatic & Antifogging Coatings: Incorporated into coatings for plastics, films, and lenses to provide durable hydrophilic and antistatic surfaces.
• Protein & Enzyme Immobilization: Serves as a functional layer for binding biomolecules in diagnostic assays and biocatalytic systems.
• Enhanced Oil Recovery (EOR): Used in polymers that improve the viscosity of injection water to increase oil displacement efficiency.
• Paper Sizing & Retention Aids: Improves strength, printability, and retention of fillers and fines in paper manufacturing.

Basic Information

Product Name	p-Styrenesulfonic Acid Potassium Salt
CAS No.	4551-90-0
Molecular Formula	C8H7KO3S
Molecular Weight	222.30 g/mol
Synonyms	4-Vinylbenzenesulfonic Acid Potassium Salt; Potassium p-Styrenesulfonate; Potassium 4-Ethenylbenzenesulfonate; Potassium Vinylbenzenesulfonate; SSK; KSS; PSS-K; Vinylbenzene Sulfonate Potassium Salt
EINECS	224-916-3

Quality Control

Our p-Styrenesulfonic Acid Potassium Salt is manufactured under a strict quality management system. Each batch undergoes comprehensive analytical testing to ensure it meets precise specifications for purity, identity, and performance. A detailed Certificate of Analysis (COA) documenting assay, impurity profile, and physical properties is provided with every shipment to guarantee traceability and compliance with your technical 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 product is hygroscopic (moisture-sensitive) and must be kept under dry conditions to prevent caking and degradation. Keep away from incompatible materials such as strong oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms
Assay (HPLC)	≥ 98.0%
Water Content (KF)	≤ 2.0%
pH (5% Solution)	6.0 - 8.0
Heavy Metals (as Pb)	≤ 10 ppm
Residual Solvents (GC)	Meets ICH guidelines

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