Description

Benzenesulfonic Acid, 2-[(4-Aminophenyl)Amino]-5-Nitro-, Diazotized, Coupled With Diazotized 3-Amino-4-Hydroxybenzenesulfonic Acid And m-Phenylenediamine is a complex, high-purity diazo coupling product primarily used as a key intermediate in the synthesis of specialized dyes and pigments. This compound is valued for its ability to impart specific color properties and structural stability in demanding applications. It is essential for manufacturers in the textile, ink, and specialty chemical industries seeking to produce high-performance colorants with consistent quality and reliable supply.

Application

• Primary Intermediate for Azo Dyes & Pigments: Serves as a critical building block in the synthesis of high-value, complex azo dyes and organic pigments, particularly for demanding applications requiring specific hue and fastness properties.
• Textile Dyeing: Used in the production of dyes for coloring natural and synthetic fibers, where its structure contributes to color intensity and wash-fastness.
• Ink Formulation: Employed in the manufacture of specialty printing inks, including those for packaging and security printing, due to its color strength and stability.
• Functional Colorants: Potential use in the development of colorants for non-textile applications such as plastics, coatings, and specialty papers.
• Research & Development: Utilized in chemical R&D laboratories for synthesizing novel chromophores and studying dye chemistry and photophysical properties.
• Analytical Chemistry: May be used as a reference standard or reagent in specific analytical methods related to dye identification and characterization.

Basic Information

Product Name	Benzenesulfonic Acid, 2-[(4-Aminophenyl)Amino]-5-Nitro-, Diazotized, Coupled With Diazotized 3-Amino-4-Hydroxybenzenesulfonic Acid And m-Phenylenediamine
CAS No.	90218-27-2
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Diazotized 2-[(4-Aminophenyl)amino]-5-nitrobenzenesulfonic acid coupled with diazotized 3-amino-4-hydroxybenzenesulfonic acid and m-phenylenediamine; Azo dye intermediate 90218-27-2; C.I. Azoic Coupling Component (variant); Complex diazo coupling product; Benzenesulfonic acid derivative azo intermediate; 5-Nitro-2-[(4-aminophenyl)amino]benzenesulfonic acid, diazotized, coupled product; m-Phenylenediamine coupled diazo compound
EINECS	Contact for details

Quality Control

Our production of this specialized intermediate adheres to strict quality control protocols to ensure batch-to-batch consistency and purity for your synthesis processes. Quality is verified through advanced analytical techniques including HPLC and spectroscopic methods. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and impurity profiles is provided with each shipment to support your quality assurance and regulatory needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at controlled room temperature (15-25°C). Keep away from strong acids, bases, and incompatible organic solvents. Due to its complex diazo structure, prolonged exposure to elevated temperatures or direct light should be avoided to maintain stability.

Specification

Item	Specification
Appearance	Colored Powder or Solid
Identification (IR)	Conforms to Reference Spectrum
Purity (HPLC)	Min. 95% (Area %)
Loss on Drying	Max. 2.0%
Residue on Ignition	Max. 1.0%
Heavy Metals (as Pb)	Max. 20 ppm

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