Description

Benzenesulfonic Acid,4-Chloro-, Hydrazide is a specialized aromatic sulfonyl hydrazide derivative with significant utility as a versatile chemical intermediate. This compound is valued for its reactive hydrazide functional group, which enables its use in the synthesis of heterocyclic compounds and other fine chemicals. It is primarily sought by manufacturers in the pharmaceutical, agrochemical, and specialty chemical industries for research and production-scale applications.

Application

• Pharmaceutical Intermediate: A key building block in the synthesis of active pharmaceutical ingredients (APIs), particularly those containing sulfonamide or heterocyclic moieties.
• Agrochemical Synthesis: Used in the production of herbicides, fungicides, and plant growth regulators where the sulfonyl hydrazide group acts as a crucial linker or functional handle.
• Polymer Chemistry: Serves as a cross-linking agent or polymerization modifier in the development of specialty polymers and resins.
• Dye and Pigment Manufacturing: Employed as an intermediate in the synthesis of complex organic dyes and colorants.
• Chemical Research & Development: A valuable reagent in organic synthesis for constructing carbon-nitrogen and carbon-sulfur bonds in academic and industrial R&D settings.
• Corrosion Inhibitor Formulation: Used as a component in specialty formulations designed to protect metal surfaces.

Basic Information

Product Name	Benzenesulfonic Acid,4-Chloro-, Hydrazide
CAS No.	2751-25-9
Molecular Formula	C6H7ClN2O2S
Molecular Weight	206.65 g/mol
Synonyms	4-Chlorobenzenesulfonohydrazide; p-Chlorobenzenesulfonyl hydrazide; Benzenesulfonic acid, 4-chloro-, hydrazide; 4-Chlorobenzenesulfonic acid hydrazide; 1-(4-Chlorophenyl)sulfonylhydrazine; NSC 403697; 4-CBSH; p-Chlorophenylsulfonylhydrazine
EINECS	220-399-3

Quality Control

Our Benzenesulfonic Acid,4-Chloro-, Hydrazide is produced under a stringent quality management system. Each batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation by IR and NMR spectroscopy, to ensure it meets exacting standards for use in sensitive applications. A Certificate of Analysis (COA) detailing all test results is provided with every shipment to guarantee traceability and compliance.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, 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 after opening to prevent degradation from atmospheric moisture.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	142 - 147 °C
Loss on Drying	≤ 1.0%
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.