Description

4-Hydroxy-5-[[4-[[4-[[1-Hydroxy-6-(Phenylamino)-3-Sulpho-2-Naphthyl]Azo]-6-Sulphonaphthyl]Azo]Naphthyl]Azo]Naphthalene-2,7-Disulphonic Acid is a high-purity, polyazo dye intermediate essential for synthesizing complex colorants. This compound is valued for its ability to impart specific, stable hues and its role in creating dyes with enhanced fastness properties. It is a critical raw material for manufacturers in the textile, leather, and specialty ink industries seeking to produce high-performance dyes and pigments.

Application

• Primary Intermediate for Textile Dyes: Synthesis of high-grade, wash-fast azo dyes for cotton, wool, and synthetic fibers.
• Leather Coloring Agent: Production of durable and vibrant dyes for the leather tanning and finishing industry.
• Specialty Ink Formulation: Key component in manufacturing inks for security printing, packaging, and digital applications requiring specific color properties.
• Pigment Manufacturing: Used in the creation of organic pigments for plastics, paints, and coatings.
• Research & Development: Serves as a sophisticated building block in chemical research for developing novel chromophores and functional dyes.
• Paper Dyeing: Employed in the production of dyes for high-quality paper and board.

Basic Information

Product Name	4-Hydroxy-5-[[4-[[4-[[1-Hydroxy-6-(Phenylamino)-3-Sulpho-2-Naphthyl]Azo]-6-Sulphonaphthyl]Azo]Naphthyl]Azo]Naphthalene-2,7-Disulphonic Acid
CAS No.	25180-11-4
Molecular Formula	C46H29N7O14S4
Molecular Weight	1064.02 g/mol
Synonyms	Acid Black 210; C.I. 300310; 1-Hydroxy-6-[(4-{[4-({4-[(1-Hydroxy-6-(phenylamino)-3-sulfo-2-naphthyl)diazenyl]-6-sulfo-1-naphthyl}diazenyl)-1-naphthyl]diazenyl}-6-sulfo-2-naphthyl)amino]benzene-3-sulfonic Acid; Polyazo Dye Intermediate; Tetrakisazo Dye Intermediate; Black 210 Dye Intermediate; CAS 25180-11-4
EINECS	Contact for details

Quality Control

Every batch of this dye intermediate is produced under strict quality management systems. We ensure compliance with relevant industry standards through rigorous in-process and final testing. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with each shipment to guarantee batch-to-batch consistency and performance reliability for your synthesis 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). This material is hygroscopic (moisture-sensitive); keep the container tightly sealed to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	Dark brown to black powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Moisture Content	≤ 5.0%
Sulfated Ash	≤ 1.0%
Heavy Metals (as Pb)	≤ 20 ppm
Solubility (in water)	Soluble, clear solution

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