Description

4-Amino-3-[[4'-[(2,4-Dihydroxyphenyl)Azo]-3,3'-Dimethyl[1,1'-Biphenyl]-4-Yl]Azo]-5-Hydroxy-6-[(4-Sulphophenyl)Azo]Naphthalene-2,7-Disulphonic Acid is a complex, high-purity azo dye intermediate of significant industrial importance. Its multi-azo and sulfonic acid functional groups make it a critical precursor for synthesizing high-performance dyes and pigments with excellent color strength and solubility. This compound is essential for manufacturers in the textile, ink, and specialty chemical industries seeking to produce vibrant, wash-fast colors.

Application

• Primary Intermediate for Reactive Dyes: A key building block in the synthesis of high-grade reactive dyes for cotton and other cellulosic fibers.
• Production of Acid Dyes: Used in manufacturing acid dyes for wool, silk, and nylon, providing excellent leveling and colorfastness properties.
• Specialty Pigment Synthesis: Serves as a precursor for creating complex organic pigments used in high-quality inks, paints, and plastics.
• Functional Dye Manufacturing: Employed in the production of dyes for specialized applications, including leather coloring and paper staining.
• Research & Development: Used in chemical R&D for developing novel chromophores and studying azo dye chemistry and properties.

Basic Information

Product Name	4-Amino-3-[[4'-[(2,4-Dihydroxyphenyl)Azo]-3,3'-Dimethyl[1,1'-Biphenyl]-4-Yl]Azo]-5-Hydroxy-6-[(4-Sulphophenyl)Azo]Naphthalene-2,7-Disulphonic Acid
CAS No.	94022-40-9
Molecular Formula	C40H30N8O11S3
Molecular Weight	918.91 g/mol
Synonyms	Acid Black 210; C.I. 300310; 4-Amino-3-{[4'-[(2,4-dihydroxyphenyl)diazenyl]-3,3'-dimethylbiphenyl-4-yl]diazenyl}-5-hydroxy-6-[(4-sulfophenyl)diazenyl]naphthalene-2,7-disulfonic acid; Trisazo dye intermediate; 94022-40-9; CAS 94022-40-9
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 for optimal downstream performance. Quality is verified through advanced analytical techniques including HPLC and spectrophotometry. 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%
Moisture Content	≤ 5.0%
Solubility	Soluble in water, alkaline solutions
Heavy Metals (as Pb)	≤ 20 ppm

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