Description

4,5-Dimethyldibenzo-18-Crown-6 is a specialized macrocyclic polyether, commonly known as a crown ether, with the CAS number 52755-95-0. This compound is valued for its exceptional ability to selectively bind alkali and alkaline earth metal cations, making it a powerful phase-transfer catalyst and complexing agent. It is essential for researchers and manufacturers in the fields of organic synthesis, analytical chemistry, and materials science who require precise molecular recognition and separation capabilities.

Application

• Phase-Transfer Catalysis (PTC): Facilitates reactions between reagents in immiscible phases, enhancing reaction rates and yields in organic synthesis.
• Ion-Selective Electrodes (ISEs): Serves as a key ionophore in sensor membranes for the selective detection of potassium and other cations.
• Metal Ion Separation & Extraction: Used in liquid-liquid extraction processes to selectively separate and purify specific metal ions from complex mixtures.
• Chemical Sensing & Molecular Recognition: A fundamental building block in supramolecular chemistry for creating host-guest complexes and sensor systems.
• Polymer Modification: Incorporated into polymer matrices to create ion-conductive materials or membranes with selective transport properties.
• Analytical Chemistry: Employed as a mobile phase additive in chromatography to improve separation of ionic species.
• Academic & Industrial Research: A critical reagent for studying cation binding kinetics, thermodynamics, and molecular assembly.

Basic Information

Product Name	4,5-Dimethyldibenzo-18-Crown-6
CAS No.	52755-95-0
Molecular Formula	C20H24O6
Molecular Weight	360.40 g/mol
Synonyms	4,5-Dimethyl-2,3:11,12-dibenzo-1,4,7,10,13,16-hexaoxacyclooctadeca-2,11-diene; Dibenzo-18-crown-6, 4,5-dimethyl-; 4,5-Dimethylbenzo-18-crown-6; 4,5-Dimethyl-DB18C6; 4,5-Dimethyl-dibenzo-18-crown-6 ether
EINECS	Contact for details

Quality Control

Our 4,5-Dimethyldibenzo-18-Crown-6 is produced under strict quality management protocols. Each batch undergoes rigorous analytical testing, including HPLC for purity, NMR for structural confirmation, and elemental analysis, to ensure it meets the high standards required for research and industrial applications. A comprehensive Certificate of Analysis (COA) detailing all specifications is provided with every shipment.

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). This product is light-sensitive (store away from light). Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Melting Point	158 - 162 °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.