Description

Dibenzo-24-Crown-8 is a macrocyclic polyether compound belonging to the crown ether family, specifically a dibenzo-substituted derivative of 24-crown-8. Its unique cavity size and electron-donating oxygen atoms make it an exceptional host molecule for selectively binding specific cations, particularly potassium and ammonium ions. This product is essential for researchers and manufacturers in advanced material science, supramolecular chemistry, and analytical chemistry who require precise molecular recognition and phase-transfer catalysis capabilities. The compound is supplied under strict quality control to ensure consistent performance in sensitive applications.

Application

• Phase-Transfer Catalyst: Facilitates reactions between reagents in immiscible phases, particularly useful in organic synthesis and polymerization processes.
• Ion-Selective Electrodes & Sensors: Serves as a key ionophore in membrane formulations for detecting potassium (K⁺) and ammonium (NH₄⁺) ions with high selectivity.
• Supramolecular Assembly: Acts as a fundamental building block for constructing rotaxanes, catenanes, and other complex molecular machines and switches.
• Analytical Chemistry: Used in chromatographic separations and as a complexing agent for the selective extraction and pre-concentration of metal ions.
• Material Science: Incorporated into polymers and coatings to modify ionic conductivity or create smart materials with responsive properties.
• Biomimetic Studies: Models biological ion transport channels for fundamental research in biochemistry and physiology.

Basic Information

Item	Detail
Product Name	Dibenzo-24-Crown-8
CAS No.	14174-09-5
Molecular Formula	C₂₄H₃₂O₈
Molecular Weight	448.51 g/mol
Synonyms	4,13-Dibenzo-1,7,10,16-tetraoxa-4,13-diazacyclooctadecane; DB24C8; Dibenzo-24-crown-8 ether; 2,5,8,15,18,21-Hexaoxatricyclo[20.4.0.0⁹,¹⁴]hexacosa-1(22),9,11,13,23,25-hexaene; 1,4,10,13-Tetraoxa-7,16-diazacyclooctadecane, 7,16-dibenzo-; 4,13-Dibenzo-1,7,10,16-tetraoxa-4,13-diazacyclooctadecane; Bis(benzo-12-crown-4)
EINECS	Contact for details

Quality Control

Our Dibenzo-24-Crown-8 is manufactured under a strict quality management system. Each batch undergoes comprehensive analytical testing, including HPLC for purity verification, NMR and IR for structural confirmation, and Karl Fischer titration for moisture content. A Certificate of Analysis (COA) detailing all test results is provided to ensure traceability and compliance with your research or production specifications. We support custom purity grades and packaging to meet specific project requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at room temperature (15-25°C). The compound is hygroscopic (moisture-sensitive); keep the original container sealed under an inert atmosphere such as nitrogen or argon for long-term storage to prevent degradation.

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.