Description

Toluenesulphonyl Chloride is a versatile and highly reactive organosulfur compound, primarily used as a key sulfonating and protecting group reagent in organic synthesis. Its ability to selectively functionalize molecules makes it an indispensable building block for creating complex chemical architectures. This compound is critical for manufacturers and R&D laboratories in the pharmaceutical, agrochemical, and specialty chemical industries seeking to develop new active ingredients and advanced materials.

Application

• Pharmaceutical Intermediates: A crucial reagent for the synthesis of sulfonamide drugs, protease inhibitors, and other active pharmaceutical ingredients (APIs).
• Agrochemical Synthesis: Used in the production of herbicides, fungicides, and insecticides where the sulfonyl group is a key functional moiety.
• Dye and Pigment Manufacturing: Acts as an intermediate in the synthesis of sulfonated dyes and optical brighteners.
• Polymer Chemistry: Employed as a modifying agent and cross-linker in the production of specialty polymers and resins.
• Chemical Research & Development: Serves as a standard reagent for introducing the tosyl (Ts) protecting group in multi-step organic synthesis, particularly for alcohols.
• Fine Chemical Production: Utilized in the manufacture of flavors, fragrances, and other high-value specialty chemicals.

Basic Information

Product Name	Toluenesulphonyl Chloride
CAS No.	26763-71-3
Molecular Formula	C7H7ClO2S
Molecular Weight	190.65 g/mol
Synonyms	p-Toluenesulfonyl chloride; Tosyl chloride; 4-Methylbenzenesulfonyl chloride; Toluene-4-sulfonyl chloride; TsCl; p-Toluenesulphonyl chloride; 4-Toluenesulfonyl chloride; Toluenesulfonic acid chloride
EINECS	Contact for details

Quality Control

Our Toluenesulphonyl Chloride is manufactured under strict quality management systems. Every batch undergoes rigorous analytical testing, including assay, purity profiling, and identification, to ensure it meets the high standards required for synthetic applications. A comprehensive Certificate of Analysis (COA) detailing all test results is provided with each shipment to guarantee traceability and consistency for our global B2B clients.

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) and should be handled under anhydrous conditions to prevent decomposition.

Specification

Item	Specification
Appearance	White to off-white crystalline solid
Identification (IR)	Conforms
Assay (HPLC)	≥ 98.0%
Melting Point	67 - 71 °C
Water Content (KF)	≤ 0.5%

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