Description

4-Chloro Benzene Sulfonic Acid is a versatile aromatic sulfonic acid derivative that serves as a key intermediate in the synthesis of more complex organic molecules. Its value lies in its strong acidic character and the reactivity of both the sulfonic acid and chloro substituents, enabling precise chemical modifications. This compound is essential for manufacturers in the agrochemical, pharmaceutical, and dye industries seeking to produce high-performance active ingredients and colorants.

Application

• Agrochemical Intermediate: A crucial building block for the synthesis of herbicides, fungicides, and other crop protection agents.
• Pharmaceutical Synthesis: Used as an intermediate in the production of active pharmaceutical ingredients (APIs) and fine chemicals.
• Dye and Pigment Manufacturing: Serves as a precursor for sulfonated azo dyes and other colorants, providing solubility and color fastness.
• Chemical Research & Development: Employed in organic synthesis laboratories for introducing sulfonic acid groups and for further functionalization.
• Surfactant and Detergent Industry: Can be used to produce specialized anionic surfactants for industrial cleaning formulations.
• Polymer Modification: Acts as a monomer or modifying agent in the production of ion-exchange resins and specialty polymers.

Basic Information

Product Name	4-Chloro Benzene Sulfonic Acid
CAS No.	98-68-8
Molecular Formula	C6H5ClO3S
Molecular Weight	192.62 g/mol
Synonyms	p-Chlorobenzenesulfonic Acid; 4-Chlorobenzenesulphonic Acid; Benzenesulfonic acid, 4-chloro-; 1-Chloro-4-sulfobenzene; Para-Chlorobenzene Sulfonic Acid; PCBSA; 4-CBSA
EINECS	202-691-5

Quality Control

Our 4-Chloro Benzene Sulfonic Acid is manufactured under a strict quality management system. Each batch undergoes comprehensive analytical testing to ensure it meets precise specifications for purity, identity, and impurity profiles. A Certificate of Analysis (COA) detailing the results is provided with every shipment to guarantee traceability and compliance with your requirements.

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, the container must be kept tightly sealed when not in use to prevent absorption of atmospheric moisture. Keep away from strong bases and incompatible materials.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 2.0%
Heavy Metals (as Pb)	≤ 20 ppm
Residue on Ignition	≤ 0.1%

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