Description

4',4''(5'')-Di-tert-Butyldibenzo-18-Crown-6 is a highly selective macrocyclic polyether, commonly known as a crown ether, specifically designed for its strong binding affinity for potassium ions. This compound matters for its exceptional ability to solubilize inorganic salts in organic media and act as a phase-transfer catalyst, significantly enhancing reaction rates and selectivities. It is a critical reagent for researchers and manufacturers in organic synthesis, analytical chemistry, and materials science who require precise cation recognition and transport.

Application

• Phase-Transfer Catalysis (PTC): Facilitates reactions between ionic reagents and organic substrates in two-phase systems, crucial for alkylations, oxidations, and polymerizations.
• Ion-Selective Electrodes & Sensors: Serves as a key ionophore in membrane electrodes for the potentiometric detection and measurement of potassium ions (K⁺).
• Metal Ion Extraction & Separation: Used in liquid-liquid extraction processes to selectively separate and concentrate potassium or other specific cations from complex mixtures.
• Organic Synthesis & Catalysis: Enables reactions by activating anions through cation complexation, improving yields in nucleophilic substitutions and esterifications.
• Materials Science & Polymer Chemistry: Incorporated into polymers and membranes to create ion-conductive materials or smart materials with responsive properties.
• Analytical Chemistry: Employed as a chiral selector or complexing agent in chromatography (HPLC, CE) for the separation of enantiomers or ionic species.

Basic Information

Product Name	4',4''(5'')-Di-tert-Butyldibenzo-18-Crown-6
CAS No.	29471-17-8
Molecular Formula	C₃₂H₄₈O₆
Molecular Weight	528.73 g/mol
Synonyms	4',4''(5'')-Di-tert-butyldibenzo-18-crown-6; Di-tert-butyldibenzo-18-crown-6; DB18C6; DtBuDB18C6; 2,3,11,12-Dibenzo-1,4,7,10,13,16-hexaoxacyclooctadeca-2,11-diene, 4,4'(5')-di-tert-butyl-; Potassium ionophore I; Bicyclo[12.4.4]octacosa-1(24),2,11,13,15,22,26-heptaene, 4,8,11,15,18,22,25,28-octaoxa-5,5,26,26-tetramethyl-
EINECS	Contact for details

Quality Control

Our 4',4''(5'')-Di-tert-Butyldibenzo-18-Crown-6 is produced under strict quality management protocols. Each batch undergoes comprehensive 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 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). 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.