Description

4-Amino-3-[[4'-[(2,4-Diaminophenyl)Azo]-3,3'-Dimethyl[1,1'-Biphenyl]-4-Yl]Azo]-5-Hydroxy-6-[(4-Sulphophenyl)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 sulphonic acid groups, makes it a critical precursor for synthesizing high-performance dyes and pigments. This compound is essential for manufacturers in the textile, ink, and specialty chemical industries seeking to produce deep, vibrant, and colorfast shades. Our supply ensures consistent quality and reliable availability for your production needs.

Application

This advanced dye intermediate is designed for high-value applications where color strength and stability are paramount. Its primary and derived uses include:

• Textile Dyeing: As a key intermediate for producing high-grade, wash-fast, and light-fast azo dyes for synthetic fibers like nylon and polyester.
• Ink Manufacturing: Used in the synthesis of pigments for industrial inks, including those for packaging and printing.
• Leather Coloring: Serves as a precursor for dyes used in the leather tanning and finishing industry.
• Paper Coloring: Employed in the production of dyes for specialty paper and board products.
• Research & Development: Utilized in chemical research for developing new chromophores and studying azo dye chemistry.
• Specialty Pigments: A building block for creating complex organic pigments with specific performance characteristics.

Basic Information

Product Name	4-Amino-3-[[4'-[(2,4-Diaminophenyl)Azo]-3,3'-Dimethyl[1,1'-Biphenyl]-4-Yl]Azo]-5-Hydroxy-6-[(4-Sulphophenyl)Azo]Naphthalene-2,7-Disulphonic Acid
CAS No.	94022-39-6
Molecular Formula	C40H30N10O10S3
Molecular Weight	906.91 g/mol
Synonyms	Acid Black 210; C.I. 300310; 4-Amino-3-{[4'-[(2,4-diaminophenyl)diazenyl]-3,3'-dimethyl[1,1'-biphenyl]-4-yl]diazenyl}-5-hydroxy-6-[(4-sulfophenyl)diazenyl]naphthalene-2,7-disulfonic acid; Polyazo dye intermediate; Black 210 intermediate; Azo dye precursor CAS 94022-39-6
EINECS	Contact for details

Quality Control

Our production of this dye intermediate adheres to stringent quality management protocols to ensure batch-to-batch consistency and purity. Every lot is analyzed using advanced techniques including HPLC and spectrophotometry to confirm identity and assay. A comprehensive Certificate of Analysis (COA) detailing purity, impurity profile, and physical specifications is provided with each shipment. We support compliance with global chemical regulations, including REACH, for seamless integration into international supply chains.

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 nature, the container must be kept tightly sealed to prevent moisture absorption, which can affect product stability and handling properties. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	Dark colored powder or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Moisture Content	≤ 5.0%
Sulfated Ash	≤ 1.0%
Heavy Metals (as Pb)	≤ 20 ppm
Solubility (Water)	Partially soluble

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