Description

4-Vinyloxybenzenesulphonic Acid is a specialized, high-purity sulfonic acid derivative featuring a polymerizable vinyl ether group. This unique bifunctional structure makes it a valuable monomer and intermediate for synthesizing advanced polymers with ion-exchange, hydrophilic, or photo-reactive properties. It is essential for R&D and production in the polymer, specialty chemical, and advanced material sectors, where precise functionality and purity are critical.

Application

• Polymer Synthesis: Key monomer for producing sulfonated polymers, ion-exchange resins, and hydrogels.
• Advanced Materials: Building block for functional coatings, membranes, and composites requiring hydrophilic or charged surfaces.
• Photoresist & Electronics: Used in the formulation of photoacid generators (PAGs) and chemically amplified resists for semiconductor manufacturing.
• Chemical Intermediate: Versatile precursor for further organic synthesis, introducing both sulfonic acid and vinyl ether functionalities.
• Adhesives & Sealants: Imparts enhanced adhesion and moisture resistance to polymer formulations.
• Water Treatment: Component in the manufacture of specialty ion-exchange materials for filtration and purification processes.

Basic Information

Product Name	4-Vinyloxybenzenesulphonic Acid
CAS No.	85554-78-5
Molecular Formula	C8H8O4S
Molecular Weight	200.21 g/mol
Synonyms	4-Ethenoxybenzenesulfonic Acid; p-Vinyloxybenzenesulfonic Acid; 4-Vinyloxybenzene-1-sulfonic Acid; 4-Ethenyloxybenzenesulfonic Acid; Benzenesulfonic acid, 4-ethenyloxy-; 4-VOBSA; p-VOBSA
EINECS	Contact for details

Quality Control

Our 4-Vinyloxybenzenesulphonic Acid is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure it meets exacting standards for research and industrial use. A Certificate of Analysis (COA) detailing specific results is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at controlled room temperature (15-25°C). This product is hygroscopic (moisture-sensitive) and must be kept under an inert atmosphere or in a desiccator after opening to prevent degradation.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Water Content (KF)	≤ 1.0%
Melting Point	Contact for details

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