Description

5-Amino-3-[[4-[[4-[(7-Amino-1-Hydroxy-3-Sulpho-2-Naphthyl)Azo]Phenyl]Azo]Phenyl]Azo]-4-Hydroxynaphthalene-2,7-Disulphonic Acid is a high-purity, polyazo dye intermediate of significant commercial importance. Its complex molecular structure, featuring multiple azo linkages and sulphonic acid groups, makes it a critical precursor for synthesizing high-performance dyes and pigments. This compound is essential for manufacturers in the textile, ink, and specialty chemical industries seeking to produce vivid, stable colors with specific functional properties.

Application

• Primary Intermediate for Azo Dyes: Serves as a key building block in the synthesis of complex, high-molecular-weight azo dyes, particularly for cotton and other cellulose fibers.
• Textile Dyeing and Printing: Used to manufacture dyes that provide excellent wash-fastness and light-fastness properties for textiles.
• Inkjet and Printing Inks: A precursor for pigments used in high-quality inks, where color strength and stability are paramount.
• Leather Dyeing: Employed in the production of dyes for leather finishing, offering deep, penetrating colors.
• Paper Coloring: Used in the manufacture of dyes for specialty paper products requiring specific color hues.
• Research & Development: Serves as a valuable compound in chemical R&D for developing new chromophores and functional dyes.

Basic Information

Item	Details
Product Name	5-Amino-3-[[4-[[4-[(7-Amino-1-Hydroxy-3-Sulpho-2-Naphthyl)Azo]Phenyl]Azo]Phenyl]Azo]-4-Hydroxynaphthalene-2,7-Disulphonic Acid
CAS No.	85959-51-9
Molecular Formula	C38H26N8O11S3
Molecular Weight	866.85 g/mol
Synonyms	Acid Black 210; C.I. 300310; 5-Amino-4-hydroxy-3-((4-((4-((7-amino-1-hydroxy-3-sulfo-2-naphthyl)azo)phenyl)azo)phenyl)azo)naphthalene-2,7-disulfonic acid; 1,3-Naphthalenedisulfonic acid, 5-amino-4-hydroxy-3-((4-((4-((7-amino-1-hydroxy-3-sulfo-2-naphthyl)azo)phenyl)azo)phenyl)azo)-; Polyazo dye intermediate; Black 210; C.I. Acid Black 210
EINECS	Contact for details

Quality Control

Our production of 5-Amino-3-[[4-[[4-[(7-Amino-1-Hydroxy-3-Sulpho-2-Naphthyl)Azo]Phenyl]Azo]Phenyl]Azo]-4-Hydroxynaphthalene-2,7-Disulphonic Acid adheres to a stringent quality management system. Every batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure consistency and compliance with customer specifications. Certificates of Analysis (COA) detailing key parameters such as assay, impurity profile, and physical characteristics are provided and available upon request.

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). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed to prevent absorption of atmospheric moisture, which can affect product quality and handling properties.

Specification

Item	Specification
Appearance	Dark brown to black powder or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Moisture (KF)	≤ 5.0%
Solubility	Soluble in water, alkaline solutions
Heavy Metals (as Pb)	≤ 20 ppm

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