Description

2,7-Naphthalenedisulfonic acid, 4-amino-5-hydroxy-, coupled with 3-aminophenol, diazotized 5-amino-2-[(4-aminophenyl)amino]benzenesulfonic acid and diazotized benzenamine, sodium salts is a complex, high-purity azo dye intermediate essential for producing vibrant and stable colorants. This compound matters because it provides the critical chromophore structure required for high-performance dyes with excellent lightfastness and wash durability. Industrial manufacturers in the textile, leather, and specialty ink sectors rely on this consistent-quality intermediate to develop advanced coloring solutions for demanding applications.

Application

• Primary intermediate for the synthesis of high-grade azo dyes and pigments used in textile dyeing and printing.
• Key component in the production of leather dyes, offering deep, uniform coloration with good adhesion.
• Used in formulating specialty inks, including those for packaging and security printing applications.
• Employed in the manufacture of colorants for paper and pulp products.
• Potential use as a research chemical for developing novel functional dyes with specific optical properties.

Basic Information

Product Name	2,7-Naphthalenedisulfonic acid, 4-amino-5-hydroxy-, coupled with 3-aminophenol, diazotized 5-amino-2-[(4-aminophenyl)amino]benzenesulfonic acid and diazotized benzenamine, sodium salts
CAS No.	93281-13-1
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	C.I. Azoic Coupling Component 107; 4-Amino-5-hydroxy-2,7-naphthalenedisulfonic acid, coupled with 3-aminophenol, diazotized 5-amino-2-[(4-aminophenyl)amino]benzenesulfonic acid and diazotized benzenamine, sodium salts; Azoic Coupling Component 107; Naphthalenedisulfonic acid derivative azo dye intermediate; Sodium salt of a coupled diazonium compound; Benzenamine, diazotized, coupled with 3-aminophenol and diazotized 5-amino-2-[(4-aminophenyl)amino]benzenesulfonic acid and 4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid, sodium salts
EINECS	Contact for details

Quality Control

Our products undergo rigorous quality testing to ensure compliance with industry standards for dye intermediates. Every batch is controlled for critical parameters such as purity, hue strength, and impurity profile to guarantee batch-to-batch consistency for your synthesis processes. Certificates of Analysis (COA) are available upon request, detailing all relevant specifications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). This material is hygroscopic (moisture-sensitive) and light-sensitive; containers must be kept tightly sealed when not in use to prevent degradation and moisture absorption.

Specification

Item	Specification
Appearance	Dark colored powder or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	Min. 95%
Moisture (KF)	Max. 5.0%
Solubility	Soluble in water

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