Description

Disodium 4-Amino-3-[[4-[(2-Amino-4-Hydroxyphenyl)Azo]Phenyl]Azo]-5-Hydroxy-6-(Phenylazo)Naphthalene-2,7-Disulphonate is a high-purity, synthetic azo dye intermediate of significant commercial importance. Its complex polyazo structure provides exceptional chromophoric properties, making it a critical precursor for producing high-value, colorfast dyes and pigments. This compound is essential for manufacturers in the textile, ink, and specialty coatings industries seeking to develop vibrant and durable colors.

Application

• Primary Intermediate for Textile Dyes: Key building block for synthesizing high-performance direct, acid, and reactive dyes for cotton, wool, silk, and nylon.
• Pigment Manufacturing: Used in the production of organic pigments for inks, plastics, and industrial coatings requiring excellent tinting strength and stability.
• Specialty Ink Formulations: Employed in the development of advanced printing inks, including those for security printing and high-fidelity packaging.
• Research & Development: Serves as a reference standard and starting material in chemical R&D for novel chromophores and functional dyes.
• Leather Dyeing: Utilized in the formulation of dyes for leather finishing to achieve deep, uniform shades.
• Paper Coloring: Applied in the manufacture of dyes for specialty paper products.

Basic Information

Product Name	Disodium 4-Amino-3-[[4-[(2-Amino-4-Hydroxyphenyl)Azo]Phenyl]Azo]-5-Hydroxy-6-(Phenylazo)Naphthalene-2,7-Disulphonate
CAS No.	68460-07-1
Molecular Formula	C34H24N8Na2O10S2
Molecular Weight	806.71 g/mol
Synonyms	Acid Black 210; C.I. 28440; Disodium 4-amino-5-hydroxy-3,6-bis(phenylazo)-2,7-naphthalenedisulfonate derivative; Polyazo dye intermediate; 2,7-Naphthalenedisulfonic acid, 4-amino-3-[[4-[(2-amino-4-hydroxyphenyl)azo]phenyl]azo]-5-hydroxy-6-(phenylazo)-, disodium salt; Azo Black 210; Direct Black 210 (related class); Tetrakisazo dye intermediate
EINECS	Contact for details

Quality Control

Our Disodium 4-Amino-3-[[4-[(2-Amino-4-Hydroxyphenyl)Azo]Phenyl]Azo]-5-Hydroxy-6-(Phenylazo)Naphthalene-2,7-Disulphonate is manufactured under a strict quality management system. Every batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure consistency and compliance with customer specifications. A detailed Certificate of Analysis (COA) documenting purity, impurity profile, and physical properties is provided with each shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at a controlled room temperature (15-25°C). This material is hygroscopic (moisture-sensitive) and light-sensitive; containers must be kept tightly sealed after opening to prevent degradation and moisture absorption. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	Dark brown to black powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Moisture Content (KF)	≤ 5.0%
Solubility (1% in Water)	Complete, clear solution
Heavy Metals (as Pb)	≤ 20 ppm
Related Substances (HPLC)	Total impurities ≤ 5.0%

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