Description

3-[[4-(Benzoylethylamino)-2-Methylphenyl]Azo]-4-Hydroxynaphthalene-1-Sulphonic Acid is a specialized azo dye intermediate, valued for its role in synthesizing high-performance pigments and colorants. This compound is critical for manufacturers requiring precise chromophore structures to achieve specific shades and superior lightfastness properties. It is primarily utilized by the dyestuff, pigment, and specialty chemical industries for producing colors used in inks, plastics, and coatings.

Application

• Primary Intermediate for Azo Pigments: Serves as a key building block in the synthesis of high-performance organic pigments, particularly yellows, oranges, and reds.
• Dye Manufacturing: Used in the production of acid dyes and direct dyes for textile applications, offering good wash and light fastness.
• Specialty Inks: A precursor for pigments used in high-quality printing inks, including packaging and security inks.
• Plastics and Polymers Coloring: Employed to create colorants for coloring various plastic resins and polymers.
• Coatings and Paints: Used in the formulation of industrial and automotive coatings where durability and color stability are essential.
• Research & Development: Acts as a valuable chemical entity in R&D for developing new chromophores and studying structure-property relationships in color chemistry.

Basic Information

Product Name	3-[[4-(Benzoylethylamino)-2-Methylphenyl]Azo]-4-Hydroxynaphthalene-1-Sulphonic Acid
CAS No.	25317-22-0
Molecular Formula	C26H24N4O4S
Molecular Weight	488.56 g/mol
Synonyms	Acid Yellow 219; C.I. 13980; 4-Hydroxy-3-[[4-[(2-methylphenyl)amino]phenyl]azo]-1-naphthalenesulfonic acid; 1-Naphthalenesulfonic acid, 4-hydroxy-3-[[4-[(2-methylphenyl)amino]phenyl]azo]-; Benzenesulfonic acid, 4-[(4-aminophenyl)azo]-3-hydroxy-, sodium salt (1:1); Azo dye intermediate YA; Light Yellow 2G intermediate
EINECS	Contact for details

Quality Control

Our production of 3-[[4-(Benzoylethylamino)-2-Methylphenyl]Azo]-4-Hydroxynaphthalene-1-Sulphonic Acid adheres to stringent quality management protocols. Every batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure consistency and meet precise customer specifications. Certificates of Analysis (COA) documenting all critical parameters are available upon request.

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.

Specification

Item	Specification
Appearance	Yellow to orange powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 2.0%
Sulfated Ash	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm
Related Substances (HPLC)	Total impurities ≤ 3.0%

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