Description

4-amino-6-[(2-chloro-4-nitrophenyl)azo]-5-hydroxy-3-[[2-hydroxy-4-[[3-hydroxy-4-[[4-[(4-nitro-2-sulphophenyl)amino]phenyl]azo]phenyl]amino]phenyl]azo]naphthalene-2,7-disulphonic acid is a high-performance, polyazo-based dye intermediate with a complex molecular structure designed for superior color properties. This compound is valued for its ability to impart deep, vibrant shades with excellent fastness properties in demanding applications. It is primarily utilized by manufacturers in the textile, leather, and specialty ink industries seeking advanced coloring solutions.

Application

• Primary intermediate for the synthesis of high-grade, wash-fast azo dyes for textiles like cotton, wool, and nylon.
• Key component in the production of leather dyes, providing rich, durable colors for finished leather goods.
• Used in formulating specialized pigments and inks for printing applications requiring high color strength.
• Potential use in the coloration of paper and packaging materials where specific hue and stability are required.
• Employed in research and development for creating novel functional dyes with specific optical or chemical properties.

Basic Information

Product Name	4-amino-6-[(2-chloro-4-nitrophenyl)azo]-5-hydroxy-3-[[2-hydroxy-4-[[3-hydroxy-4-[[4-[(4-nitro-2-sulphophenyl)amino]phenyl]azo]phenyl]amino]phenyl]azo]naphthalene-2,7-disulphonic acid
CAS No.	68134-20-3
Molecular Formula	C40H24ClN11O16S4
Molecular Weight	1087.37 g/mol
Synonyms	Acid Black 210; C.I. 300310; 4-Amino-6-[(2-chloro-4-nitrophenyl)azo]-5-hydroxy-3-{[2-hydroxy-4-({3-hydroxy-4-[(4-{[(4-nitro-2-sulfophenyl)amino]phenyl}azo)phenyl]amino}phenyl)azo]naphthalene-2,7-disulfonic acid; Polyazo dye intermediate; Leather Black 210; Textile Black 210; Azo Dye Intermediate 68134-20-3
EINECS	Contact for details

Quality Control

Our production of this dye intermediate adheres to strict quality control protocols to ensure batch-to-batch consistency and performance. Quality is verified through advanced analytical techniques including HPLC and spectrophotometry. A comprehensive Certificate of Analysis (COA) detailing purity, strength, 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, and well-ventilated area at room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept sealed to prevent absorption of atmospheric moisture, which can affect product performance.

Specification

Item	Specification
Appearance	Dark powder or granules
Identification (IR)	Conforms to structure
Assay (HPLC)	Min. 90%
Moisture Content	Max. 5.0%
Ash Content	Max. 1.0%
Water Solubility	Soluble

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