Application: Li+ selective electrode

ChemicalName: 6,6-Dibenzyl-1,4,8,11-tetraoxacyclotetradecane

White crystalline powder
Purity: ≥98.0% (HPLC)
MW: 384.51, C24H32O4

Storage Condition: ambient temperature
Shipping Condition:
ambient temperature

Product Description
Dibenzyl-14-crown-4 is 200 times more selective for lithium than for sodium or potassium. Though Dibutyl-phenanthroline is 1,000 times more selective for lithium than sodium at a controlled pH, Dibenzyl-14-crown-4 is less pH-sensitive.

Selectivity: LogKpot(Li/Na): -2.5, LogKpot(Li/K): -2.3, LogKpot(Li/Cs): -1.6, LogKpot(Li/Rb): -2.2, LogKpot(Li/NH4): -3.1, LogKpot(Li/H): -3.2, LogKpot(Li/Mg): -4.3, LogKpot(Li/Ca): -4.9, LogKpot(Li/Ba): -4.7, LogKpot(Li/Sr): -4.3
Formulation: Ionophore: 1%, NPOE: 70%, K-TCPB: 50 mol% of ionophore/PVC, THF

Chemical Structure

1. K. Kimura, et al., Lithium Ion Selective Electrodes Based on Crown Ethers for Serum Lithium Assay. Anal Chem. 1987;59:2331-2334.
2. K. Kimura, et al., Synthesis and Selectivity for Lithium of Lipophilic 14-Crown-4 Derivatives Bearing Bulky Substituents or an Additional Binding Site in the Side Arm. J Chem Soc Perkin Trans 2. 1986;12:1945-1951.
Price List

Code# Unit Size Ships in* Price Quantity
50 mg
8-14 business days $210.00

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For Research Use Only Products