Description

4-Amino-5-Hydroxy-6-[[4'-[(4-Hydroxyphenyl)Azo]-3,3'-Dimethyl[1,1'-Biphenyl]-4-Yl]Azo]-3-[(4-Nitrophenyl)Azo]Naphthalene-2,7-Disulphonic Acid is a high-purity, polyazo dye intermediate of significant commercial importance. Its complex molecular structure, featuring multiple azo linkages and sulfonic acid groups, makes it a critical precursor for synthesizing high-performance dyes and pigments. This compound is essential for manufacturers in the colorant industry seeking to produce specialized dyes with enhanced color strength, lightfastness, and application-specific properties.

Application

• Primary Intermediate for Azo Dyes: Serves as a key building block in the synthesis of complex, high-value azo dyes for textiles, leather, and paper.
• Specialty Pigment Manufacturing: Used in the production of organic pigments for inks, coatings, and plastics requiring specific chromaticity and stability.
• Functional Dye Synthesis: A precursor for dyes used in non-textile applications, such as lasers, optical data storage, and liquid crystal displays (LCDs).
• Research & Development: Employed in chemical R&D for developing novel chromophores and studying structure-property relationships in dye chemistry.
• Analytical Reagent: Can be utilized as a standard or reagent in analytical chemistry for method development and calibration.

Basic Information

Item	Details
Product Name	4-Amino-5-Hydroxy-6-[[4'-[(4-Hydroxyphenyl)Azo]-3,3'-Dimethyl[1,1'-Biphenyl]-4-Yl]Azo]-3-[(4-Nitrophenyl)Azo]Naphthalene-2,7-Disulphonic Acid
CAS No.	56148-97-1
Molecular Formula	C46H34N8O10S2
Molecular Weight	923.94 g/mol
Synonyms	Acid Black 210; C.I. 300310; 4-Amino-5-hydroxy-6-[[4'-[(4-hydroxyphenyl)azo]-3,3'-dimethyl[1,1'-biphenyl]-4-yl]azo]-3-[(4-nitrophenyl)azo]naphthalene-2,7-disulfonic acid; 2,7-Naphthalenedisulfonic acid, 4-amino-5-hydroxy-6-[[4'-[(4-hydroxyphenyl)azo]-3,3'-dimethyl[1,1'-biphenyl]-4-yl]azo]-3-[(4-nitrophenyl)azo]-; Polyazo dye intermediate; Azo dye precursor; Disulfonated azo compound
EINECS	Contact for details

Quality Control

Our production of this advanced dye intermediate adheres to stringent quality control protocols to ensure batch-to-batch consistency and high purity. Quality is verified through modern analytical techniques including HPLC, UV-Vis spectroscopy, and elemental analysis. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with every shipment to support your quality assurance and regulatory 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). 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 colored powder or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 2.0%
Sulfated Ash	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm

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