Description

2-(5-Chloro-2-Pyridylazo)-5-Diethylaminophenol is a high-purity chromogenic reagent and analytical standard, widely recognized for its exceptional selectivity and sensitivity in complexometric titrations. Its primary value lies in its ability to form stable, intensely colored complexes with specific metal ions, enabling precise quantitative analysis. This compound is essential for research and quality control laboratories in the pharmaceutical, environmental monitoring, and metallurgical industries where accurate trace metal detection is critical.

Application

• Spectrophotometric Reagent: Used as a sensitive colorimetric indicator for the determination of trace metals like cobalt, nickel, and copper in various matrices.
• Analytical Chemistry Standard: Serves as a primary standard or reference material in complexometric titrations and method validation.
• Environmental Analysis: Employed in testing water, soil, and industrial effluent samples for heavy metal contamination.
• Pharmaceutical QC: Utilized in the analysis of active pharmaceutical ingredients (APIs) and raw materials for catalytic metal impurities.
• Metallurgy & Material Science: Applied in the assay of alloys and the study of metal ion speciation and complexation.
• Research & Development: A key reagent in academic and industrial R&D for developing new analytical methodologies and sensor technologies.

Basic Information

Product Name	2-(5-Chloro-2-Pyridylazo)-5-Diethylaminophenol
CAS No.	26015-51-0
Molecular Formula	C15H17ClN4O
Molecular Weight	304.78 g/mol
Synonyms	5-Cl-PADAP; 2-(5-Chloro-2-pyridylazo)-5-diethylaminophenol; 5-Chloro-2-(2-hydroxy-5-diethylaminophenylazo)pyridine; 5-Chloro-PADAP; 2-(5-Chloropyridin-2-yl)azo-5-(diethylamino)phenol; 5-Cl-2-Pyridylazo-5-diethylaminophenol; 5-Chloro-2-pyridylazo-5-diethylaminophenol; 26015-51-0
EINECS	Contact for details

Quality Control

Our 2-(5-Chloro-2-Pyridylazo)-5-Diethylaminophenol is manufactured under strict quality management systems. Every batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation (IR, NMR), to ensure it meets the high standards required for analytical reagent applications. A comprehensive Certificate of Analysis (COA) detailing purity, assay, and impurity profiles is provided with each shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at a controlled room temperature (15-25°C). Keep away from strong alkalis and incompatible organic solvents. The container should be kept tightly sealed in a dry environment to maintain stability.

Specification

Item	Specification
Appearance	Reddish-brown to dark red crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	162 - 167 °C
Loss on Drying	≤ 0.5%
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.