Description

4-amino-6-[[4-[[4-[[4-anilino-2-hydroxyphenyl]azo]phenyl]amino]-3-sulphophenyl]azo]-5-hydroxy-3-[(4-nitrophenyl)azo]naphthalene-2,7-disulphonic acid, potassium salt is a high-purity, multi-functional azo dye intermediate of significant commercial importance. Its complex polyazo structure is engineered to deliver exceptional color strength and specific hue properties in demanding applications. This compound is primarily required by manufacturers in the textile, ink, and specialty coatings industries for producing high-performance dyes and pigments.

Application

• Primary Intermediate for Textile Dyes: A key building block in the synthesis of high-grade, wash-fast azo dyes for cotton, wool, and synthetic fibers.
• Pigment Manufacturing: Used in the production of organic pigments for printing inks, including flexographic and gravure inks.
• Specialty Coatings: Imparts color in industrial and automotive coatings where specific chromaticity and stability are required.
• Leather Dyeing: Employed in the formulation of dyes for leather finishing, offering good penetration and color yield.
• Paper Coloring: Suitable for the coloration of specialty papers and paper products.
• Research & Development: Serves as a precise chemical entity for R&D in novel chromophores and functional materials.

Basic Information

Item	Details
Product Name	4-amino-6-[[4-[[4-[[4-anilino-2-hydroxyphenyl]azo]phenyl]amino]-3-sulphophenyl]azo]-5-hydroxy-3-[(4-nitrophenyl)azo]naphthalene-2,7-disulphonic acid, potassium salt
CAS No.	95008-83-6
Molecular Formula	C40H24KN9O13S3
Molecular Weight	Contact for details
Synonyms	Potassium 4-amino-6-{[4-({4-[(4-anilino-2-hydroxyphenyl)azo]phenyl}amino)-3-sulfophenyl]azo}-5-hydroxy-3-[(4-nitrophenyl)azo]naphthalene-2,7-disulfonate; C.I. Acid Black 210; Azo Dye Intermediate Black 210; Polyazo dye intermediate; 4-Amino-6-({4-[(4-{[4-(4-anilino-2-hydroxyphenyl)azo]phenyl}amino)-3-sulfophenyl]azo}-5-hydroxy-3-[(4-nitrophenyl)azo]naphthalene-2,7-disulfonic acid potassium salt; Black 210 Dye Intermediate
EINECS	Contact for details

Quality Control

Our production of this advanced dye intermediate adheres to strict quality management protocols to ensure batch-to-batch consistency and purity. Quality is verified through analytical techniques including HPLC, UV-Vis spectroscopy, and titration. A comprehensive Certificate of Analysis (COA) detailing identity, purity, 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 a controlled room temperature (15-25°C). Due to its hygroscopic nature, the container must be kept tightly sealed to prevent moisture absorption, which can affect product performance. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	Dark blue to black powder or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	Min. 95%
Moisture Content	Max. 5.0%
Ash Content	Contact for details
Heavy Metals (as Pb)	Max. 20 ppm
Solubility (in water)	Partially soluble, forms colloidal solution

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