Description

4-(Phenylazo)-1-Naphthol is an azo dye intermediate and analytical reagent characterized by its distinct color and molecular structure. This compound is valued for its role in synthesizing pigments and dyes, as well as its utility in specific chemical detection and research applications. It is primarily sought by manufacturers in the pigment and dye industry, analytical chemistry laboratories, and research institutions developing colorimetric indicators.

Application

• Dye and Pigment Manufacturing: A key intermediate for the synthesis of various azo dyes and organic pigments.
• Analytical Reagent: Used in laboratory settings for colorimetric analysis and as a chemical indicator.
• Research & Development: Serves as a building block in organic synthesis and materials science research.
• Non-Food Colorant Precursor: Employed in the production of colorants for inks, coatings, and plastics.
• Teaching and Academic Studies: Used in university laboratories to demonstrate azo coupling reactions and spectroscopy.

Basic Information

Product Name	4-(Phenylazo)-1-Naphthol
CAS No.	3651-02-3
Molecular Formula	C₁₆H₁₂N₂O
Molecular Weight	248.28 g/mol
Synonyms	1-Naphthol, 4-(phenylazo)-; 4-(Phenylazo)-1-naphthol; 4-Hydroxy-1-phenylazonaphthalene; 1-Phenylazo-4-naphthol; Sudan Orange; C.I. Solvent Orange 2; C.I. 12140; Oil Orange
EINECS	222-891-1

Quality Control

Our 4-(Phenylazo)-1-Naphthol is produced under a strict quality management system. Each batch undergoes comprehensive analytical testing, including identity confirmation by IR spectroscopy and purity determination by HPLC, to ensure it meets precise specifications. Certificates of Analysis (COA) documenting all test results 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, well-ventilated area at room temperature (15-25°C). Keep away from incompatible materials.

Specification

Item	Specification
Appearance	Orange to red-brown powder or crystals
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	Contact for details
Loss on Drying	≤ 0.5%

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