Description

2,7-Naphthalenedisulfonic acid, 5-amino-4-hydroxy-3-[(4-nitrophenyl)azo]-, diazotized, coupled with diazotized 2-amino-4,6-dinitrophenol, diazotized 4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid, diazotized 4-nitrobenzenamine and resorcinol is a complex, multi-component azo dye intermediate. This compound is engineered to deliver exceptional color strength and chromophore stability in demanding applications. It is primarily required by manufacturers in the textile, leather, and specialty ink industries for producing high-performance dyes and pigments.

Application

• Primary intermediate for the synthesis of high-grade black and brown azo dyes used in textile dyeing and printing.
• Key component in the manufacturing of leather dyes, providing deep, uniform shades with good fastness properties.
• Used in the production of specialty inks, including those for security printing and high-durability applications.
• Potential precursor for colorants in plastics and polymers, where thermal stability is required.
• Research and development of novel functional dyes for non-textile applications.

Basic Information

Product Name	2,7-Naphthalenedisulfonic acid, 5-amino-4-hydroxy-3-[(4-nitrophenyl)azo]-, diazotized, coupled with diazotized 2-amino-4,6-dinitrophenol, diazotized 4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid, diazotized 4-nitrobenzenamine and resorcinol
CAS No.	90459-01-1
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	C.I. Azoic Coupling Component; Diazotized Azo Dye Intermediate; Polyazo Dye Intermediate; 90459-01-1; Azo Dye Black Intermediate; Complex Naphthalene-based Azo Compound; Leather Black Dye Intermediate; Multi-component Coupling Product
EINECS	Contact for details

Quality Control

Our production of this advanced dye intermediate adheres to strict quality management systems. Every batch undergoes comprehensive analysis to ensure consistency in composition, color value, and impurity profile. Certificates of Analysis (COA) documenting key parameters such as assay, strength, and solubility are provided to guarantee it meets your specific formulation requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at ambient temperature (15-25°C). Keep away from strong oxidizing agents and incompatible materials. Due to its complex azo structure, prolonged exposure to elevated temperatures should be avoided.

Specification

Item	Specification
Appearance	Dark colored powder or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	Min. 90% (or as per grade)
Color Strength	Standardized vs. reference batch
Moisture (KF Titration)	Max. 5.0%
Ash Content	Max. 1.0%
Solubility (in water)	Test and report

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