Description

2-Chloro-4-Methylbenzenesulfonyl Chloride is a versatile and reactive organosulfur compound primarily used as a key sulfonating agent and synthetic intermediate. Its value lies in its ability to introduce the sulfonyl chloride functional group, a crucial building block for creating sulfonamides and other derivatives with specific properties. This chemical is essential for researchers and manufacturers in the pharmaceutical, agrochemical, and specialty chemical industries who require high-purity intermediates for advanced synthesis.

Application

• Pharmaceutical Intermediate: A critical building block in the synthesis of active pharmaceutical ingredients (APIs), particularly for creating sulfonamide-based drugs.
• Agrochemical Synthesis: Used in the production of herbicides, fungicides, and insecticides where the sulfonyl moiety is required for biological activity.
• Dye and Pigment Manufacturing: Serves as an intermediate in the synthesis of sulfonated dyes and organic pigments.
• Polymer Chemistry: Employed as a monomer or modifying agent in the production of specialty polymers and resins.
• Chemical Research & Development: A valuable reagent for organic synthesis in R&D laboratories for exploring new chemical entities and reaction pathways.
• Ligand and Catalyst Preparation: Used to synthesize specialized ligands and catalysts for coordination chemistry and catalytic processes.

Basic Information

Product Name	2-Chloro-4-Methylbenzenesulfonyl Chloride
CAS No.	55311-94-9
Molecular Formula	C7H6Cl2O2S
Molecular Weight	225.09 g/mol
Synonyms	4-Methyl-2-chlorobenzenesulfonyl chloride; 2-Chloro-p-toluenesulfonyl chloride; 2-Chloro-4-methylbenzenesulfonyl chloride; 4-Methyl-2-chlorobenzene-1-sulfonyl chloride; p-Toluenesulfonyl chloride, 2-chloro-; 2-Chloro-4-methylphenylsulfonyl chloride; Benzenesulfonyl chloride, 2-chloro-4-methyl-; 2-Chloro-4-toluenesulfonyl chloride
EINECS	Contact for details

Quality Control

Our 2-Chloro-4-Methylbenzenesulfonyl Chloride is manufactured under strict quality management systems. Every batch undergoes rigorous analytical testing, including chromatographic purity assays and identity confirmation, to ensure it meets the high standards required for synthetic applications. A comprehensive Certificate of Analysis (COA) detailing purity, assay, and impurity profiles is provided with each shipment to guarantee traceability and consistency for your critical processes.

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). This product is hygroscopic (moisture-sensitive); ensure containers are kept tightly sealed to exclude moisture. Keep away from heat, sparks, open flames, and incompatible materials such as strong bases, amines, and alcohols.

Specification

Item	Specification
Appearance	White to off-white crystalline powder or lumps
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.