Description

2,7-Naphthalenedisulfonic acid, 4-amino-5-hydroxy-, diazotized, coupled with diazotized 5-amino-2-(phenylamino)benzenesulfonic acid, diazotized 4-nitrobenzenamine and resorcinol is a complex, high-purity organic dye intermediate. This compound is critical for synthesizing high-performance dyes and pigments, offering excellent color fastness and stability. It is primarily required by manufacturers in the textile, leather, and specialty ink industries for producing vibrant and durable colorants.

Application

• Primary Intermediate for Azo Dyes: Synthesis of high-grade, complex azo dyes for textiles and fabrics.
• Leather Dyeing: Production of colorants for leather finishing with enhanced light and wash fastness.
• Specialty Ink Formulation: Key component in the manufacture of inks for security printing and high-value packaging.
• Paper Coloring: Used in the production of colored papers requiring specific hue and stability properties.
• Research & Development: Serves as a building block in chemical research for developing novel chromophores and functional materials.
• Pigment Manufacturing: Precursor in the synthesis of organic pigments used in plastics and coatings.

Basic Information

Product Name	2,7-Naphthalenedisulfonic acid, 4-amino-5-hydroxy-, diazotized, coupled with diazotized 5-amino-2-(phenylamino)benzenesulfonic acid, diazotized 4-nitrobenzenamine and resorcinol
CAS No.	90432-06-7
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	C.I. Acid Black 210; Acid Black 210; 2,7-Naphthalenedisulfonic acid, 4-amino-5-hydroxy-, diazotized, coupled with diazotized 5-amino-2-(phenylamino)benzenesulfonic acid, diazotized 4-nitroaniline and resorcinol; 4-Amino-5-hydroxy-2,7-naphthalenedisulfonic acid, diazotized, coupled with diazotized 5-amino-2-(phenylamino)benzenesulfonic acid, diazotized 4-nitrobenzenamine and resorcinol; Azo dye intermediate for Acid Black 210; [CAS 90432-06-7]
EINECS	Contact for details

Quality Control

Our production of this dye intermediate adheres to stringent quality control protocols to ensure batch-to-batch consistency and purity for industrial synthesis. Quality is verified through advanced analytical techniques including HPLC and spectrophotometry. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with every shipment to support your quality assurance processes.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep away from strong acids and organic solvents. Ensure the container is kept tightly sealed to protect the integrity of the product.

Specification

Item	Specification
Appearance	Dark powder or solid
Identification (IR)	Conforms to reference spectrum
Assay (HPLC)	Min. 95%
Moisture Content	Max. 2.0%
Ash Content	Max. 1.0%
Solubility	Soluble in water, alkaline solutions

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