Description

3-Hydrazino Benzenesulfonic Acid is a versatile aromatic sulfonic acid derivative functionalized with a hydrazine group, serving as a critical building block in advanced organic synthesis. This compound is valued for its dual reactivity, allowing it to act as both a sulfonating agent and a nucleophile for the formation of heterocycles and azo linkages. It is primarily sought after by manufacturers in the pharmaceutical, dye, and agrochemical industries for the production of active ingredients and specialty colorants.

Application

• Pharmaceutical Intermediate: Key precursor in the synthesis of sulfa drugs, antiviral agents, and other active pharmaceutical ingredients (APIs).
• Dye and Pigment Manufacturing: Essential component for producing azo dyes and pigments, contributing to color fastness and stability.
• Agrochemical Synthesis: Used in creating herbicides, fungicides, and plant growth regulators.
• Chemical Research & Development: Valuable reagent for constructing complex molecular architectures in medicinal and organic chemistry.
• Corrosion Inhibitor Formulation: Incorporated into specialty chemicals designed to protect metal surfaces in industrial processes.
• Polymer Modification: Employed to introduce sulfonic acid groups into polymers, enhancing properties like hydrophilicity or ion-exchange capacity.

Basic Information

Product Name	3-Hydrazino Benzenesulfonic Acid
CAS No.	138-30-7
Molecular Formula	C6H8N2O3S
Molecular Weight	188.20 g/mol
Synonyms	3-Hydrazinobenzenesulfonic Acid; m-Hydrazinobenzenesulfonic Acid; Benzenesulfonic acid, 3-hydrazino-; 3-Hydrazinylbenzenesulfonic acid; 3-Sulfophenylhydrazine; m-Sulfophenylhydrazine; 3-HBSA; Hydrazinobenzene-3-sulfonic acid
EINECS	205-322-5

Quality Control

Our 3-Hydrazino Benzenesulfonic Acid is manufactured under a strict quality management system. Each batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure it meets precise specifications for critical applications. A Certificate of Analysis (COA) detailing all test results is provided with every shipment to guarantee traceability and batch-to-batch consistency.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature and tendency to be easily oxidized, it is recommended to store the material under an inert atmosphere (e.g., nitrogen or argon) for long-term preservation and to minimize degradation.

Specification

Item	Specification
Appearance	White to light yellow crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 2.0%
Residue on Ignition	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm

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