Description

7-[[4-[[4-[(4-Aminobenzoyl)Amino]-2-Methylphenyl]Azo]-2-Methylphenyl]Azo]-1,3-Naphthalenedisulfonic Acid is a specialized, high-purity azo dye intermediate of significant commercial importance. Its complex molecular structure, featuring multiple azo linkages and sulfonic 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 vivid, stable colors with specific functional properties.

Application

• Primary Intermediate for Azo Dyes & Pigments: Serves as a key building block in the synthesis of complex, high-value azo dyes, particularly for textile fibers like cotton, wool, and nylon.
• Specialty Ink Formulations: Used in the production of pigments for high-quality printing inks, including those for packaging and security applications.
• Functional Dye Synthesis: A precursor for dyes with specialized properties, such as light-fastness or specific affinity for synthetic polymers.
• Research & Development: Employed in chemical R&D for developing novel chromophores and studying azo coupling reactions.
• Analytical Chemistry Reagent: Potentially used as a standard or reagent in analytical methods for dye characterization.

Basic Information

Item	Detail
Product Name	7-[[4-[[4-[(4-Aminobenzoyl)Amino]-2-Methylphenyl]Azo]-2-Methylphenyl]Azo]-1,3-Naphthalenedisulfonic Acid
CAS No.	63216-82-0
Molecular Formula	C31H24N6O7S2
Molecular Weight	656.69 g/mol
Synonyms	1,3-Naphthalenedisulfonic acid, 7-[[4-[[4-[(4-aminobenzoyl)amino]-2-methylphenyl]azo]-2-methylphenyl]azo]-; C.I. Acid Yellow 219; Acid Yellow 219; Azo dye intermediate YA; 7-[(4-{[4-(4-Aminobenzamido)-2-methylphenyl]diazenyl}-2-methylphenyl)diazenyl]naphthalene-1,3-disulfonic acid; 63216-82-0; YA Intermediate
EINECS	Contact for details

Quality Control

Every batch of 7-[[4-[[4-[(4-Aminobenzoyl)Amino]-2-Methylphenyl]Azo]-2-Methylphenyl]Azo]-1,3-Naphthalenedisulfonic Acid is manufactured under a strict quality management system. Our products undergo rigorous quality testing, including advanced chromatographic analysis, to ensure consistent purity and performance as a dye intermediate. A comprehensive Certificate of Analysis (COA) detailing identity, assay, and impurity profiles is provided with each shipment to guarantee compliance with your specifications.

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). Keep away from strong acids and organic solvents. The container must be kept tightly closed to protect from moisture and contamination.

Specification

Item	Specification
Appearance	Yellow to Orange Powder
Identification (IR)	Conforms to Structure
Assay (HPLC)	≥ 95.0%
Moisture (KF)	≤ 5.0%
Ash Content	≤ 1.0%
Heavy Metals (as Pb)	≤ 20 ppm

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