Description

Ethanesulfonyl Chloride is a versatile sulfonating and sulfonylating reagent essential for introducing the ethanesulfonyl functional group into target molecules. Its high reactivity makes it a critical building block for synthesizing a wide range of advanced chemical intermediates. This compound is particularly valuable for researchers and manufacturers in the pharmaceutical, agrochemical, and specialty chemical industries seeking to develop new active ingredients and functional materials.

Application

• Pharmaceutical Intermediate: Key reagent in the synthesis of sulfonamide-based drugs, including enzyme inhibitors and receptor antagonists.
• Agrochemical Synthesis: Used to create novel herbicides, fungicides, and insecticides by incorporating the sulfonyl moiety.
• Polymer & Material Science: Acts as a modifier or cross-linking agent in the production of specialty polymers and functional materials.
• Organic Synthesis Reagent: Employed as a sulfonyl chloride source for nucleophilic substitution reactions to form sulfonate esters and sulfonamides.
• Dye & Pigment Manufacturing: Intermediate in the production of certain sulfonated dyes and colorants.
• Chemical Research & Development: A valuable tool for medicinal chemistry and process chemistry in developing new synthetic routes.

Basic Information

Product Name	Ethanesulfonyl Chloride
CAS No.	594-44-5
Molecular Formula	C2H5ClO2S
Molecular Weight	128.58 g/mol
Synonyms	Ethanesulfonyl chloride; Ethylsulfonyl chloride; 1-Chlorosulfonylethane; ESC; Ethanesulfonic acid chloride; NSC 8818; Sulfurochloridic acid, ethyl ester
EINECS	209-838-1

Quality Control

Our Ethanesulfonyl Chloride is manufactured under strict quality control protocols to ensure batch-to-batch consistency and high purity. We employ advanced analytical techniques, including GC and HPLC, to monitor key parameters. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with each shipment to support your quality assurance and regulatory needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area. Due to its hygroscopic (moisture-sensitive) nature, containers should be kept tightly sealed under an inert atmosphere (e.g., nitrogen) to prevent degradation. Recommended storage temperature is 2-8°C for long-term stability.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (GC)	≥ 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.