Description

4-(5-Chloro-2-Pyridylazo)-1,3-Phenylenediamine is a specialized organic compound belonging to the phenylenediamine derivative class, valued for its role as a key analytical reagent and synthetic intermediate. Its primary commercial significance lies in its use as a chromogenic agent and chelating ligand in sensitive colorimetric assays and metal ion detection. This high-purity chemical is essential for research and quality control laboratories in the pharmaceutical, environmental monitoring, and advanced materials sectors.

Application

• Analytical Reagent: Used as a sensitive colorimetric reagent for the spectrophotometric determination of trace metal ions (e.g., cobalt, nickel, copper) in environmental and industrial samples.
• Pharmaceutical Research: Serves as a crucial intermediate or reference standard in the synthesis and analysis of novel pharmaceutical compounds and active ingredients.
• Chelating Agent: Functions as a selective ligand in coordination chemistry for the preparation of metal complexes with specific catalytic or optical properties.
• Dye & Pigment Intermediate: Employed in the synthesis of azo dyes and functional pigments due to its diazo-coupling capability.
• Sensor Development: A key component in the fabrication of chemical sensors and test strips for on-site detection of specific analytes.
• Laboratory Reference Standard: Provides a high-purity standard for method development, validation, and calibration in analytical chemistry.

Basic Information

Product Name	4-(5-Chloro-2-Pyridylazo)-1,3-Phenylenediamine
CAS No.	33006-91-6
Molecular Formula	C11H10ClN5
Molecular Weight	247.69 g/mol
Synonyms	5-Chloro-2-(2,4-diaminophenylazo)pyridine; 1,3-Diamino-4-[(5-chloro-2-pyridinyl)azo]benzene; 4-[(5-Chloro-2-pyridyl)azo]-1,3-phenylenediamine; 5-Cl-PADAP; 4-(5-Chloro-2-pyridylazo)resorcinol diamine derivative; PAR derivative; Chromogenic reagent for metals
EINECS	Contact for details

Quality Control

Our 4-(5-Chloro-2-Pyridylazo)-1,3-Phenylenediamine is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation (IR, NMR), to ensure it meets the high standards required for research and industrial applications. A comprehensive Certificate of Analysis (COA) detailing purity, assay, and impurity profiles is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at controlled room temperature (15-25°C). Keep away from heat, sparks, and open flame. This material is light-sensitive (store away from light).

Specification

Item	Specification
Appearance	Orange to red-brown crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Melting Point	Contact for details
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%

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