Description

2-[(4-Aminophenyl)Amino]-5-Nitrobenzenesulphonic Acid Hydrochloride is a specialized organic intermediate of significant importance in the synthesis of complex dyes and pigments. Its molecular structure, featuring both amino and nitro functional groups on a benzenesulfonic acid backbone, makes it a valuable precursor for creating colorants with specific properties. This compound is primarily sought by manufacturers in the dyestuff, textile, and specialty chemical industries for research and production-scale applications.

Application

• Key intermediate in the synthesis of azo dyes and pigments, particularly for textiles and inks.
• Precursor for the development of specialty colorants used in high-performance applications.
• Used in research and development of novel organic compounds with chromophoric properties.
• Potential intermediate in the manufacture of functional chemicals for the polymer and materials science sectors.
• Employed in analytical chemistry as a reference standard or reagent for specific test methods.

Basic Information

Product Name	2-[(4-Aminophenyl)Amino]-5-Nitrobenzenesulphonic Acid Hydrochloride
CAS No.	94232-01-6
Molecular Formula	C12H11N3O5S · HCl
Molecular Weight	345.76 g/mol
Synonyms	2-[(4-Aminophenyl)amino]-5-nitrobenzenesulfonic acid hydrochloride; 5-Nitro-2-[(4-aminophenyl)amino]benzenesulfonic acid hydrochloride; Benzenesulfonic acid, 2-[(4-aminophenyl)amino]-5-nitro-, hydrochloride; 4-Amino-4'-nitrodiphenylamine-2-sulfonic acid hydrochloride; C.I. 37230; Acid Brown 4 intermediate
EINECS	Contact for details

Quality Control

Our production of 2-[(4-Aminophenyl)Amino]-5-Nitrobenzenesulphonic Acid Hydrochloride adheres to stringent internal quality protocols to ensure batch-to-batch consistency and reliability. Each lot is analyzed to confirm identity, purity, and conformance to agreed specifications. A comprehensive Certificate of Analysis (COA) detailing all test results is provided with every shipment to support your quality assurance processes.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Due to its hygroscopic nature, the container must be kept tightly sealed to minimize exposure to atmospheric moisture.

Specification

Item	Specification
Appearance	Yellow to brown powder or crystalline solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 2.0%
Residue on Ignition	≤ 0.5%
Heavy Metals	≤ 20 ppm

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