Description

4-Amino-3-[[4-[[4-[(2-Amino-4-Hydroxyphenyl)Azo]Phenyl]Amino]-3-Sulfophenyl]Azo]-5-Hydroxy-6-(Phenylazo)-2,7-Naphthalenedisulfonic Acid is a complex, high-purity azo dye intermediate characterized by its multiple sulfonic acid groups, which impart excellent water solubility. This compound matters for its role as a critical precursor in the synthesis of specialized, high-value dyes and pigments, particularly those requiring specific shades, lightfastness, and application properties. Industrial manufacturers in the textile, ink, and specialty chemical sectors need this intermediate to produce advanced colorants for demanding applications.

Application

• Primary Intermediate for Textile Dyes: Synthesis of reactive and direct dyes for coloring cotton, wool, and nylon fibers.
• Specialty Ink Production: Manufacturing of high-performance pigments for inks used in packaging, security printing, and digital applications.
• Functional Dye Synthesis: Precursor for dyes used in biological staining, analytical chemistry, and as pH indicators.
• Research & Development: Key building block in academic and industrial R&D for novel chromophores and functional materials.
• Leather and Paper Coloring: Used in the production of dyes for the leather tanning and paper industries.

Basic Information

Item	Details
Product Name	4-Amino-3-[[4-[[4-[(2-Amino-4-Hydroxyphenyl)Azo]Phenyl]Amino]-3-Sulfophenyl]Azo]-5-Hydroxy-6-(Phenylazo)-2,7-Naphthalenedisulfonic Acid
CAS No.	72066-88-7
Molecular Formula	C34H26N10O13S3
Molecular Weight	902.82 g/mol
Synonyms	Acid Black 210; C.I. 300310; 2,7-Naphthalenedisulfonic acid, 4-amino-3-[[4-[[4-[(2-amino-4-hydroxyphenyl)azo]phenyl]amino]-3-sulfophenyl]azo]-5-hydroxy-6-(phenylazo)-; 4-Amino-5-hydroxy-3-[[4-[[4-[(2-amino-4-hydroxyphenyl)azo]phenyl]amino]-3-sulfophenyl]azo]-6-(phenylazo)-2,7-naphthalenedisulfonic acid; Black 210; C.I. Acid Black 210; Acid Black 210 (C.I. 300310); Azo Black 210 Intermediate
EINECS	Contact for details

Quality Control

Our production of this advanced dye intermediate adheres to stringent quality protocols to ensure batch-to-batch consistency and purity. Quality is verified through comprehensive analytical methods including HPLC, UV-Vis spectroscopy, and titration. A Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with every shipment to support your quality assurance and regulatory compliance 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). This material is hygroscopic (moisture-sensitive); keep the container tightly sealed when not in use to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	Dark brown to black powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Water Content (KF)	≤ 5.0%
Ash Content	≤ 1.0%
Solubility (in Water)	Freely soluble

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