Description

4-[(2-Methoxy-5-Methylphenyl)Azo]Naphthol is an azo dye intermediate, a member of the diarylide pigment family known for its ability to impart vivid and stable color properties. This compound matters for its role in synthesizing high-performance organic pigments valued for their excellent lightfastness, heat stability, and chemical resistance in demanding applications. It is primarily needed by manufacturers in the pigments and dyes, plastics, inks, and coatings industries seeking to produce durable and vibrant colorants.

Application

• Pigment Manufacturing: A key intermediate for producing high-performance diarylide yellow and orange pigments.
• Plastics Coloring: Used in the synthesis of pigments for coloring engineering plastics, PVC, and polyolefins, offering good dispersion and thermal stability.
• Printing Inks: Essential for manufacturing pigments used in packaging, publication, and specialty inks requiring high color strength and durability.
• Industrial Coatings: Contributes to pigments for automotive, coil, and powder coatings that demand excellent weather resistance and color retention.
• Synthetic Fibers: Used in pigment preparations for mass coloration of synthetic fibers like polyester and nylon.
• Research & Development: Serves as a valuable building block in organic synthesis and material science research for developing new chromophores.

Basic Information

Product Name	4-[(2-Methoxy-5-Methylphenyl)Azo]Naphthol
CAS No.	93940-03-5
Molecular Formula	C₁₈H₁₆N₂O₂
Molecular Weight	292.33 g/mol
Synonyms	4-[(2-Methoxy-5-methylphenyl)azo]-1-naphthol; 4-[(2-Methoxy-5-methylphenyl)diazenyl]naphthalen-1-ol; 1-Naphthol, 4-[(2-methoxy-5-methylphenyl)azo]-; C.I. Azoic Coupling Component 37; Azoic Coupling Component 37; Naphthol AS-OL; 2-Methoxy-5-methylbenzenediazonium, 4-hydroxy-1-naphthyl derivative; 4-Hydroxy-1-naphthalenyl 2-methoxy-5-methylbenzenediazonium
EINECS	Contact for details

Quality Control

Our 4-[(2-Methoxy-5-Methylphenyl)Azo]Naphthol is produced under a stringent quality management system. Every batch undergoes rigorous analytical testing to ensure high purity, consistent performance, and compliance with agreed specifications. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and impurity profiles is provided with each shipment to guarantee traceability and support your quality assurance protocols.

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 incompatible materials such as strong oxidizing agents. The product is light-sensitive (store away from light).

Specification

Item	Specification
Appearance	Orange to brown powder or crystalline solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	Contact for details
Loss on Drying	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm
Residual Solvents	Meets ICH guidelines

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