Description

2,7-Naphthalenedisulfonic acid, 4-amino-5-hydroxy-, diazotized, coupled with diazotized 2-[(4-aminophenyl)amino]-5-nitrobenzenesulfonic acid, diazotized 4-nitrobenzenamine and resorcinol, potassium sodium salts is a complex, multi-component azo dye intermediate of significant commercial importance. This compound is engineered to provide a specific chromophore structure, making it a critical precursor for the synthesis of high-performance dyes and pigments. It is primarily sought after by manufacturers in the textile, ink, and specialty coatings industries who require precise color properties and batch-to-batch consistency for their formulations.

Application

• Primary Intermediate for Azo Dyes: Serves as a key building block in the synthesis of high-value, complex azo dyes for textiles, leather, and paper.
• Pigment Manufacturing: Used in the production of organic pigments for inks, plastics, and industrial coatings, where color strength and stability are paramount.
• Specialty Colorants: Employed in the formulation of specialty colorants for niche applications requiring specific solubility or bonding characteristics.
• Research & Development: Utilized in chemical R&D labs for developing new dye structures and studying color chemistry.

Basic Information

Product Name	2,7-Naphthalenedisulfonic acid, 4-amino-5-hydroxy-, diazotized, coupled with diazotized 2-[(4-aminophenyl)amino]-5-nitrobenzenesulfonic acid, diazotized 4-nitrobenzenamine and resorcinol, potassium sodium salts
CAS No.	90432-00-1
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	C.I. Azoic Coupling Component; Complex Azo Dye Intermediate; Potassium Sodium Salt of a Tetrakisazo Dye; 4-Amino-5-hydroxy-2,7-naphthalenedisulfonic acid, diazotized, coupled with diazotized 2-[(4-aminophenyl)amino]-5-nitrobenzenesulfonic acid, diazotized 4-nitrobenzenamine and resorcinol, potassium sodium salts; Azo Dye Precursor 90432-00-1; Multi-component Azo Coupling Product
EINECS	Contact for details

Quality Control

Our production of this advanced dye intermediate adheres to strict quality management systems to ensure purity and performance consistency. Every batch is analyzed using modern analytical techniques, including HPLC and spectrophotometry, to confirm identity and strength. A comprehensive Certificate of Analysis (COA) detailing purity, impurity profile, and physical specifications is provided with each shipment to support your quality assurance protocols.

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); keep the container tightly sealed to prevent absorption of atmospheric moisture.

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.