Description

4-Chloro-3-Hydrazinobenzenesulphonic Acid is a specialized aromatic sulfonic acid derivative bearing both chloro and hydrazino functional groups. This unique structure makes it a valuable chemical intermediate and reagent in advanced organic synthesis. It is primarily utilized by manufacturers in the pharmaceutical and dyestuff industries for the production of active pharmaceutical ingredients (APIs) and high-performance pigments.

Application

• Pharmaceutical Intermediate: A key building block in the synthesis of various active pharmaceutical ingredients (APIs), particularly those requiring a substituted benzenesulfonic acid core.
• Dye and Pigment Manufacturing: Serves as a crucial precursor for the production of azo dyes and other complex colorants, contributing to color fastness and specific hue properties.
• Chemical Synthesis Reagent: Used in organic reactions such as diazotization and coupling reactions, leveraging its reactive hydrazino group.
• Research & Development: Employed in academic and industrial R&D labs for developing new chemical entities and exploring novel synthetic pathways.
• Analytical Chemistry: Can be used as a derivatization agent or standard in chromatographic analysis and method development.

Basic Information

Product Name	4-Chloro-3-Hydrazinobenzenesulphonic Acid
CAS No.	98-39-5
Molecular Formula	C6H7ClN2O3S
Molecular Weight	222.65 g/mol
Synonyms	4-Chloro-3-hydrozinobenzenesulfonic Acid; 3-Hydrazino-4-chlorobenzenesulfonic Acid; Benzenesulfonic acid, 4-chloro-3-hydrozino-; 4-Chloro-3-hydrozinobenzene-1-sulfonic Acid; 98-39-5; 4-Chloro-3-hydrozinophenylsulfonic Acid; 3-Hydrazinyl-4-chlorobenzenesulfonic Acid
EINECS	202-662-8

Quality Control

Our 4-Chloro-3-Hydrazinobenzenesulphonic Acid is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing to ensure identity, purity, and consistency. A comprehensive Certificate of Analysis (COA) detailing assay, impurity profile, and physical characteristics is provided and available upon request, supporting compliance in regulated applications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed to prevent absorption of atmospheric moisture. For long-term storage, consider using an inert atmosphere to minimize potential oxidation.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 1.0%
Residue on Ignition	≤ 0.1%
Heavy Metals (as Pb)	≤ 20 ppm

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