Description

Nitrophenyl 3-[[2-Hydroxy-3-[(2-Methylphenyl)Carbamoyl]-1-Naphthyl]Azo]-4-Methoxybenzenesulphonate is a high-purity, complex azo dye intermediate essential for synthesizing specialized colorants. Its precise molecular structure provides the chromophoric and auxochromic properties required for producing vivid and stable pigments. This compound is a critical raw material for manufacturers in the dyes and pigments industry, particularly those developing high-performance colorants for technical applications.

Application

• Primary intermediate in the synthesis of high-performance azo dyes and pigments.
• Used in the production of specialized colorants for inks, including industrial and security printing applications.
• Key precursor for manufacturing pigments used in plastics and polymer coloration.
• Employed in research and development for novel functional dyes with specific optical properties.
• Potential use in the synthesis of dyes for textiles requiring high light and wash fastness.
• Intermediate for colorants used in specialty coatings and paints.

Basic Information

Product Name	Nitrophenyl 3-[[2-Hydroxy-3-[(2-Methylphenyl)Carbamoyl]-1-Naphthyl]Azo]-4-Methoxybenzenesulphonate
CAS No.	72639-39-5
Molecular Formula	C31H24N4O7S
Molecular Weight	620.61 g/mol
Synonyms	Benzenesulfonic acid, 4-methoxy-3-[[2-hydroxy-3-[(2-methylphenyl)amino]carbonyl]-1-naphthalenyl]azo]-, 4-nitrophenyl ester; 4-Nitrophenyl 3-[[2-hydroxy-3-[(2-methylphenyl)carbamoyl]-1-naphthyl]azo]-4-methoxybenzenesulphonate; Azo dye intermediate 72639-39-5; CI Disperse Yellow 241 (related); 4-Methoxy-3-((2-hydroxy-3-(o-toluamido)-1-naphthyl)azo)benzenesulfonic acid 4-nitrophenyl ester
EINECS	Contact for details

Quality Control

Our production of Nitrophenyl 3-[[2-Hydroxy-3-[(2-Methylphenyl)Carbamoyl]-1-Naphthyl]Azo]-4-Methoxybenzenesulphonate adheres to stringent quality management protocols to ensure batch-to-batch consistency and purity. Each lot is analyzed against comprehensive specifications using advanced analytical techniques such as HPLC and NMR. Certificates of Analysis (COA) documenting identity, purity, and impurity profiles are available upon request 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 a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept sealed to prevent degradation from atmospheric moisture. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	Orange to red-brown powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
Loss on Drying	≤ 2.0%
Residue on Ignition	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm

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