Description

6-Amino-3-[(4-Aminophenyl)Azo]-4-Hydroxynaphthalene-2-Sulphonic Acid is a specialized azo dye intermediate characterized by its distinct aromatic and sulfonic acid structure. This compound is valued for its role as a key precursor in synthesizing high-performance dyes and pigments, offering excellent chromophoric properties. It is primarily utilized by manufacturers in the textile, ink, and specialty chemical industries seeking to produce vivid and stable colorants.

Application

• Primary Intermediate for Azo Dyes: Serves as a crucial building block in the synthesis of acid dyes, direct dyes, and reactive dyes for textiles like wool, silk, and nylon.
• Pigment Manufacturing: Used in the production of organic pigments for inks, coatings, and plastics, providing strong color strength and good dispersion.
• Laboratory Research & Development: Employed as a standard or experimental compound in R&D for developing new chromophores and studying azo coupling reactions.
• Specialty Chemical Synthesis: Acts as a functional intermediate in the creation of more complex chemical entities for niche applications in imaging and sensing.

Basic Information

Product Name	6-Amino-3-[(4-Aminophenyl)Azo]-4-Hydroxynaphthalene-2-Sulphonic Acid
CAS No.	67893-45-2
Molecular Formula	C₁₆H₁₅N₅O₄S
Molecular Weight	373.39 g/mol
Synonyms	6-Amino-3-[(4-aminophenyl)azo]-4-hydroxy-2-naphthalenesulfonic acid; 4-Hydroxy-6-amino-3-[(4-aminophenyl)azo]-2-naphthalenesulfonic acid; Azo dye intermediate 67893-45-2; 2-Naphthalenesulfonic acid, 6-amino-3-[(4-aminophenyl)azo]-4-hydroxy-; C.I. Azoic Diazo Component (related); 4-Aminoazobenzene-3'-sulfonic acid derivative; 3-[(4-Aminophenyl)azo]-4-hydroxy-6-amino-2-naphthalenesulfonic acid
EINECS	Contact for details

Quality Control

Our production of 6-Amino-3-[(4-Aminophenyl)Azo]-4-Hydroxynaphthalene-2-Sulphonic Acid adheres to stringent quality protocols to ensure batch-to-batch consistency and high purity. The material is subjected to comprehensive analytical testing, including HPLC for assay and impurity profiling. Certificates of Analysis (COA) documenting identity, purity, and related substances are provided with every shipment to support your quality assurance and regulatory needs.

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). Keep away from incompatible materials such as strong oxidizing agents. Due to its light-sensitive nature, prolonged exposure to direct light should be avoided to maintain product integrity.

Specification

Item	Specification
Appearance	Brown to dark brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 2.0%
Sulfated Ash	≤ 1.0%
Related Substances (HPLC)	Total impurities ≤ 3.0%

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