Description

4,4'-Methylenebis(Benzenesulfonyl Chloride) is a high-purity, versatile chemical intermediate characterized by its two reactive sulfonyl chloride groups. This compound is critical for introducing the methylenebis(benzenesulfonyl) moiety into target molecules, enabling the synthesis of advanced materials and functional chemicals. It is primarily sought after by R&D chemists and process engineers in the pharmaceutical, agrochemical, and polymer industries for applications requiring precise molecular construction and robust chemical linkages.

Application

• Pharmaceutical Intermediate: Key building block in the synthesis of active pharmaceutical ingredients (APIs), particularly for creating sulfonamide-based drugs and other bioactive molecules.
• Crosslinking Agent: Used in polymer chemistry to create crosslinked networks, enhancing the thermal stability and mechanical properties of specialty resins and coatings.
• Agrochemical Synthesis: Serves as a precursor in the manufacture of herbicides, fungicides, and other crop protection agents with specific sulfonyl-based activity.
• Dye and Pigment Manufacturing: Employed in the production of sulfonated dyes and high-performance pigments that require light-fastness and chemical resistance.
• Liquid Crystal & OLED Materials: A valuable intermediate for synthesizing sulfone-based compounds used in electronic display technologies.
• Chemical Research (R&D): Utilized in academic and industrial laboratories for developing novel organic compounds and exploring new synthetic pathways.

Basic Information

Product Name	4,4'-Methylenebis(Benzenesulfonyl Chloride)
CAS No.	3119-64-0
Molecular Formula	C13H10Cl2O4S2
Molecular Weight	365.25 g/mol
Synonyms	Bis(4-sulfonylchloridephenyl)methane; 4,4'-Methylenedi(benzenesulfonyl chloride); Bis(p-sulfonylchlorophenyl)methane; p,p'-Methylenebis(benzenesulfonyl chloride); 4,4'-Methylenebis(benzenesulphonyl chloride); NSC 403697; Methanediyldibenzene-4,1-diyl disulfonate (chloride)
EINECS	221-491-8

Quality Control

Our production of 4,4'-Methylenebis(Benzenesulfonyl Chloride) adheres to stringent quality management protocols to ensure batch-to-batch consistency and high purity. Each lot is analyzed using advanced techniques like HPLC, NMR, and titration to confirm identity, potency, and impurity profiles. A comprehensive Certificate of Analysis (COA) detailing all test results is provided with every shipment, supporting compliance in regulated applications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept sealed under dry conditions to prevent hydrolysis of the sulfonyl chloride groups. Keep away from strong bases, amines, and alcohols.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	158 - 162 °C
Loss on Drying	≤ 0.5%
Related Substances (HPLC)	Total impurities ≤ 2.0%

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