Description

4,4'-Bis(Chlorosulfonyl)Diphenyl Ether is a key bifunctional aromatic sulfonyl chloride derivative, serving as a versatile and high-value chemical building block. Its core value lies in its ability to introduce sulfonyl chloride groups into target molecules, enabling the synthesis of advanced materials with specific functional properties. This compound is essential for R&D and production teams in the pharmaceutical, agrochemical, and specialty polymer industries seeking to develop novel sulfonamides, dyes, and high-performance resins.

Application

• Pharmaceutical Intermediate: Critical for synthesizing active pharmaceutical ingredients (APIs) containing sulfonamide functional groups.
• Agrochemical Synthesis: Used in the production of modern herbicides, fungicides, and pesticides that require sulfonyl-based chemistries.
• Polymer & Resin Modifier: Acts as a cross-linking agent or monomer in the manufacture of specialty polymers, including polyethersulfones and high-temperature resins.
• Dye & Pigment Manufacturing: Serves as a precursor for synthesizing sulfonated dyes and organic pigments with enhanced solubility and color fastness.
• Liquid Crystal & OLED Materials: Employed in the research and development of advanced electronic display materials.
• Chemical Research (R&D): A valuable reagent for organic synthesis and the development of new sulfonation reactions in academic and industrial laboratories.

Basic Information

Product Name	4,4'-Bis(Chlorosulfonyl)Diphenyl Ether
CAS No.	121-63-1
Molecular Formula	C12H8Cl2O5S2
Molecular Weight	367.22 g/mol
Synonyms	Bis(4-chlorosulfonylphenyl) Ether; 4,4'-Oxydi(benzenesulfonyl chloride); Diphenyl Ether-4,4'-disulfonyl Chloride; 4,4'-Dichlorosulfonyldiphenyl Ether; 1,1'-Oxybis[4-(chlorosulfonyl)benzene]; NSC 403107
EINECS	204-489-5

Quality Control

Every batch of 4,4'-Bis(Chlorosulfonyl)Diphenyl Ether is produced and tested under a strict quality management system. We ensure compliance with relevant industry standards and provide comprehensive Certificates of Analysis (COA) for each shipment, detailing purity, identity, and impurity profiles. Our rigorous quality testing includes chromatographic and spectroscopic methods to guarantee batch-to-batch consistency and reliability for your critical synthesis processes.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature and reactivity as a strong acid/organic solvent derivative, the container must be kept sealed under an inert atmosphere (e.g., nitrogen or argon) after opening to prevent hydrolysis and degradation. Keep away from moisture, bases, and oxidizing agents.

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.