Description

3-Chlorobenzenesulfonic Acid is a versatile aromatic sulfonic acid derivative, serving as a key intermediate in the synthesis of more complex organic molecules. Its value lies in its dual functionality, providing both a reactive sulfonic acid group and a chloro substituent for further chemical transformations. This compound is essential for manufacturers in the agrochemical, pharmaceutical, and dye industries, where it is used to create active ingredients, specialty chemicals, and functional materials.

Application

• Agrochemical Intermediate: A key building block in the synthesis of herbicides, pesticides, and plant growth regulators.
• Pharmaceutical Synthesis: Used as an intermediate in the production of active pharmaceutical ingredients (APIs) and fine chemicals.
• Dye and Pigment Manufacturing: Acts as a precursor and sulfonating agent in the creation of colorants and specialty dyes.
• Polymer Modification: Employed to introduce sulfonate groups into polymers, enhancing properties like solubility or ionic character.
• Catalyst and Ligand Synthesis: Useful in the preparation of metal-complexing agents and catalytic systems.
• Research & Development: A valuable reagent in organic chemistry laboratories for method development and novel compound synthesis.

Basic Information

Product Name	3-Chlorobenzenesulfonic Acid
CAS No.	20677-52-5
Molecular Formula	C6H5ClO3S
Molecular Weight	192.62 g/mol
Synonyms	m-Chlorobenzenesulfonic Acid; 3-Chlorobenzene-1-sulfonic Acid; Benzenesulfonic acid, 3-chloro-; m-Chlorophenylsulfonic Acid; 3-CBSA; 3-Chlorophenylsulfonic Acid
EINECS	243-941-4

Quality Control

Our 3-Chlorobenzenesulfonic Acid is produced under a strict quality management system. Each batch undergoes comprehensive analytical testing, including assay, impurity profiling, and identity confirmation, to ensure it meets the high standards required for industrial and research applications. Certificates of Analysis (COA) detailing purity, physical characteristics, and test results are provided with every shipment and are available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). This product is hygroscopic (moisture-sensitive) and a strong acid; ensure containers are kept tightly sealed to prevent absorption of atmospheric moisture and corrosion. Keep away from incompatible materials such as strong bases and oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (Titration)	≥ 98.0 %
Water Content (KF)	≤ 1.0 %
Related Substances (HPLC)	Total impurities ≤ 2.0%
Melting Point	Contact for details

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