Description

p-Styrenesulfonyl Chloride is a highly reactive sulfonyl chloride derivative, primarily used as a versatile reagent for introducing the p-styrenesulfonyl functional group. This compound is critical for researchers and manufacturers requiring a polymerizable sulfonating agent to modify materials or synthesize specialized monomers. It is particularly valuable in the production of ion-exchange resins, functional polymers, and as a key intermediate in pharmaceutical and agrochemical synthesis for global industrial and R&D sectors.

Application

• Polymer Chemistry: Key monomer for synthesizing sulfonated polystyrene and other ion-exchange resins used in water treatment and catalysis.
• Pharmaceutical Intermediates: Acts as a sulfonylation agent in the synthesis of active pharmaceutical ingredients (APIs) and prodrugs.
• Material Science: Used to create surface-modified materials, hydrogels, and functional coatings with tailored ionic properties.
• Agrochemical Synthesis: Intermediate in the production of certain herbicides and fungicides that require sulfonamide or sulfonate groups.
• Cross-linking Agent: Employed in the preparation of cross-linked polymeric networks for chromatography media and specialty membranes.
• Research & Development: A valuable tool compound in organic synthesis for introducing polymerizable, charged moieties into small molecules.

Basic Information

Product Name	p-Styrenesulfonyl Chloride
CAS No.	2633-67-2
Molecular Formula	C8H7ClO2S
Molecular Weight	202.66 g/mol
Synonyms	4-Vinylbenzenesulfonyl chloride; p-Vinylbenzenesulfonyl chloride; Styrene-4-sulfonyl chloride; 4-Ethenylbenzenesulfonyl chloride; (4-Vinylphenyl)sulfonyl chloride; Vinylphenylsulfonyl chloride; NSC 401119; p-Styrenesulfonic acid chloride
EINECS	220-135-6

Quality Control

Our p-Styrenesulfonyl Chloride is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including assay by titration and impurity profile analysis by HPLC/GC, to ensure high purity and consistency. Certificates of Analysis (COA) detailing all specifications are provided with every shipment to support your quality assurance and regulatory compliance needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at temperatures between 2°C and 8°C (refrigerated) for long-term stability. This product is hygroscopic (moisture-sensitive) and should be handled under anhydrous conditions to prevent decomposition. Keep away from heat, sparks, open flames, and incompatible materials such as strong bases, amines, and alcohols.

Specification

Item	Specification
Appearance	White to light yellow crystalline powder or solid
Identification (IR)	Conforms to structure
Assay (Titration)	≥ 98.0%
Water Content (KF)	≤ 0.5%
Related Substances (HPLC)	Total impurities ≤ 2.0%
Melting Point	64°C - 68°C

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