Description

4-(2-Pyridylazo)Resorcinol is a high-purity analytical reagent and a versatile chelating agent widely used in spectrophotometric analysis. Its primary value lies in its exceptional ability to form highly colored, stable complexes with various metal ions, enabling precise quantitative and qualitative detection. This compound is essential for researchers and quality control laboratories in the chemical, pharmaceutical, and environmental monitoring sectors.

Application

• Spectrophotometric Reagent: A key chromogenic agent for the sensitive detection and quantification of metal ions such as cobalt, nickel, copper, and zinc in analytical chemistry.
• Complexometric Titration Indicator: Used as a metallochromic indicator in titrations to determine the endpoint for various metal ions.
• Research & Development: Employed in academic and industrial R&D for studying metal-ligand interactions, coordination chemistry, and developing new analytical methodologies.
• Environmental Analysis: Applied in testing water, soil, and industrial effluent samples for trace metal contamination.
• Pharmaceutical QC: Utilized in the quality control of pharmaceutical ingredients and products where metal catalyst residues or impurities must be monitored.
• Material Science: Assists in the analysis of metals and alloys, and in the synthesis of functional coordination polymers.

Basic Information

Product Name	4-(2-Pyridylazo)Resorcinol
CAS No.	52722-53-9
Molecular Formula	C11H9N3O2
Molecular Weight	215.21 g/mol
Synonyms	PAR; 4-(2-Pyridylazo)resorcinol; 1-(2-Pyridylazo)-2,4-dihydroxybenzene; 2,4-Dihydroxy-1-(2-pyridylazo)benzene; 2-(2,4-Dihydroxyphenylazo)pyridine; Pyridylazoresorcinol; PAR Reagent; 4-(Pyridin-2-yldiazenyl)benzene-1,3-diol
EINECS	Contact for details

Quality Control

Our 4-(2-Pyridylazo)Resorcinol is manufactured under strict quality management systems to ensure batch-to-batch consistency and high purity suitable for analytical applications. Each lot undergoes rigorous testing, including identification, assay, and impurity profiling. A comprehensive Certificate of Analysis (COA) detailing purity, physical characteristics, and test results is provided with every shipment to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). This product is hygroscopic (moisture-sensitive); ensure the container is sealed after each use to minimize exposure to atmospheric humidity.

Specification

Item	Specification
Appearance	Orange to red-brown crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	190°C - 195°C
Loss on Drying	≤ 1.0%
Residue on Ignition	≤ 0.1%
Heavy Metals (as Pb)	≤ 20 ppm

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