Description

4,4'-Thiobis(Benzenesulfonic Acid Chloride) is a high-purity, reactive chemical intermediate essential for introducing sulfonyl chloride functionality into target molecules. Its value lies in its role as a versatile building block for synthesizing advanced materials and specialty chemicals with tailored properties. This product is critical for research and industrial applications in sectors such as polymer chemistry, pharmaceuticals, and agrochemicals, where precise molecular modification is required.

Application

• Polymer Synthesis: Key monomer or cross-linking agent for producing high-performance sulfonated polymers, ion-exchange resins, and specialty polyelectrolytes.
• Pharmaceutical Intermediates: Used in the synthesis of active pharmaceutical ingredients (APIs) and prodrugs, particularly those requiring sulfonamide or sulfonate ester linkages.
• Agrochemical Manufacturing: Serves as a precursor for creating novel herbicides, fungicides, and plant growth regulators with enhanced activity and selectivity.
• Dye and Pigment Production: Intermediate in the manufacture of sulfonated dyes, optical brighteners, and colorants for textiles and plastics.
• Ligand and Catalyst Design: Useful for functionalizing ligands and creating metal-organic frameworks (MOFs) or heterogeneous catalysts with sulfonic acid groups.
• Surface Modification Agent: Employed to introduce hydrophilic or charged sulfonate groups onto material surfaces for improved wettability or anti-fouling properties.

Basic Information

Product Name	4,4'-Thiobis(Benzenesulfonic Acid Chloride)
CAS No.	3119-65-1
Molecular Formula	C12H8Cl2O4S3
Molecular Weight	383.28 g/mol
Synonyms	4,4'-Sulfonylbis(benzenesulfonyl chloride); Bis(4-chlorosulfonylphenyl) Sulfone; 4,4'-Thiobis(benzenesulfonyl chloride); p,p'-Thiobis(benzenesulfonyl chloride); 4,4'-Disulfanediyldibenzene-1-sulfonyl chloride; Thiobis(4-benzenesulfonyl chloride); Bis(p-chlorosulfonylphenyl) Sulfide
EINECS	221-494-6

Quality Control

Every batch of 4,4'-Thiobis(Benzenesulfonic Acid Chloride) is manufactured and tested under a strict quality management system. We ensure compliance with relevant industry standards and provide comprehensive analytical documentation. Certificates of Analysis (COA) detailing purity, identity, and impurity profiles are available for all shipments upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area. Due to its hygroscopic (moisture-sensitive) nature, the container must be kept sealed under an inert atmosphere (e.g., nitrogen or argon) after opening to prevent decomposition. Recommended storage temperature is 2-8°C for long-term stability.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	Contact for details
Water Content (KF)	≤ 0.5%
Related Substances (HPLC)	Contact for details

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