Description

4,4'-Diantipyrylmethane CAS NO 71501-10-5 is a high-purity organic compound belonging to the antipyrine derivative class, valued for its strong chelating and chromogenic properties. This chemical is essential for analytical chemistry applications, particularly as a sensitive and selective reagent for the spectrophotometric determination of various metal ions. It is primarily needed by manufacturers and laboratories in the chemical analysis, environmental testing, and pharmaceutical research sectors for precise quantitative analysis.

Application

• Spectrophotometric Reagent: Used for the colorimetric and UV-Vis determination of trace metals like iron, copper, cobalt, and rare earth elements.
• Analytical Chemistry: Serves as a key component in developing sensitive assay methods for environmental water and soil analysis.
• Pharmaceutical Research: Employed in research for the analysis of drug formulations and the study of metal-binding interactions.
• Industrial Process Control: Applied in monitoring metal ion concentrations in chemical manufacturing and metallurgical processes.
• Chelating Agent: Functions as a ligand in coordination chemistry for the separation and purification of specific metal ions.
• Reference Standard: Used as a high-purity standard in analytical method development and validation.

Basic Information

Product Name	4,4'-Diantipyrylmethane
CAS No.	71501-10-5
Molecular Formula	C23H24N4O2
Molecular Weight	388.47 g/mol
Synonyms	Bis(1,5-dimethyl-2-phenyl-1,2-dihydro-3H-pyrazol-3-on-4-yl)methane; Diantipyrylmethane; DAPM; 4,4'-Methylenebis(1,5-dimethyl-2-phenyl-1,2-dihydro-3H-pyrazol-3-one); 1,1'-Methylenebis(4-dimethylamino-2-phenyl-3,5-pyrazolidinedione); Antipyrinylmethane; Contact for details on additional trade names.
EINECS	Contact for details

Quality Control

Our 4,4'-Diantipyrylmethane is manufactured under strict quality management systems to ensure batch-to-batch consistency and high purity for analytical applications. Each lot undergoes rigorous testing, including identity confirmation, purity assay, and impurity profiling. A comprehensive Certificate of Analysis (COA) detailing all 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, and well-ventilated area at room temperature (15-25°C). Keep away from incompatible materials. Due to its light-sensitive nature, prolonged exposure to direct light should be avoided.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	156 - 160 °C
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.