Description

4-(2-Pyridylazo)Naphthol is a high-purity analytical reagent and complexometric indicator. This compound is valued for its selective chelating properties, making it a critical tool for precise metal ion detection and quantification. It is primarily needed by analytical laboratories, chemical manufacturers, and research institutions involved in environmental testing, metallurgy, and pharmaceutical quality control.

Application

• Spectrophotometric Reagent: Used for the colorimetric determination of trace metals such as cobalt, nickel, copper, and iron in various matrices.
• Complexometric Indicator: Serves as a metallochromic indicator in EDTA titrations for the analysis of metal ions in solution.
• Research & Development: Employed in academic and industrial research for studying metal-ligand interactions and developing new analytical methodologies.
• Environmental Analysis: Applied in testing water, soil, and industrial waste samples for heavy metal contamination.
• Pharmaceutical QC: Utilized in the analysis of catalysts and metal impurities in active pharmaceutical ingredients (APIs) and excipients.
• Metallurgical Analysis: Aids in the assay of ores, alloys, and plating baths for specific metal content.

Basic Information

Product Name	4-(2-Pyridylazo)Naphthol
CAS No.	7385-98-0
Molecular Formula	C15H11N3O
Molecular Weight	249.27 g/mol
Synonyms	PAN; 1-(2-Pyridylazo)-2-naphthol; 4-(2-Pyridylazo)-1-naphthol; α-Pyridyl-β-azonaphthol; 2-(2-Pyridylazo)-1-naphthol; Pyridylazonaphthol; PAN Indicator; Naphthol PAN
EINECS	230-985-6

Quality Control

Our 4-(2-Pyridylazo)Naphthol is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure high purity and consistent performance as a reagent-grade chemical. Certificates of Analysis (COA) detailing purity, identity, and physical specifications are available upon request to 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. Due to its light-sensitive nature, prolonged exposure to light should be avoided to maintain stability.

Specification

Item	Specification
Appearance	Orange to red-brown crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	138°C - 142°C
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Suitability Test	Passes test (as metal ion indicator)

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