Description

2-Chlorobenzenesulfonyl Chloride is a versatile and highly reactive organosulfur compound primarily used as a key synthetic intermediate. Its value lies in its dual functionality, serving as a crucial building block for introducing the 2-chlorobenzenesulfonyl moiety into more complex molecules. This chemical is essential for manufacturers and R&D teams in the pharmaceutical, agrochemical, and specialty chemical industries, where it is employed in the synthesis of active ingredients, dyes, and functional materials.

Application

• Pharmaceutical Intermediate: A critical building block in the synthesis of various active pharmaceutical ingredients (APIs), particularly sulfonamide-based drugs.
• Agrochemical Synthesis: Used in the production of herbicides, fungicides, and other crop protection agents.
• Dye and Pigment Manufacturing: Serves as a precursor for sulfonated dyes and specialty colorants.
• Polymer Modification: Employed to introduce sulfonyl chloride groups into polymer chains for enhanced properties.
• Chemical Research & Development: A valuable reagent in organic synthesis for creating novel sulfonamide and sulfonate esters.
• Ligand and Catalyst Preparation: Used in the development of specialized ligands for metal catalysis.

Basic Information

Product Name	2-Chlorobenzenesulfonyl Chloride
CAS No.	2905-23-9
Molecular Formula	C6H4Cl2O2S
Molecular Weight	211.06 g/mol
Synonyms	o-Chlorobenzenesulfonyl Chloride; 2-Chlorobenzene-1-sulfonyl Chloride; Benzenesulfonyl Chloride, 2-chloro-; 1-Chloro-2-(chlorosulfonyl)benzene; NSC 406908; Ortho-Chlorobenzenesulfonyl Chloride; 2-CBSC
EINECS	220-826-5

Quality Control

Our 2-Chlorobenzenesulfonyl Chloride is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing to ensure high purity and consistency, meeting the stringent requirements of industrial and research applications. Certificates of Analysis (COA) detailing purity, identity, and impurity profiles are available for every shipment upon request.

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 tightly sealed to prevent degradation from atmospheric moisture. Keep away from strong bases and oxidizing agents.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid or crystalline solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Water Content (KF)	≤ 0.5%

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