CAS · 294-93-9
Product Overview
12-Crown-4 is a high-purity crown-ether supplied for industrial and specialty chemical applications. Contact our team for specifications, packaging options and lead times.
Product Specifications
| Appearance | Colorless transparent liquid |
|---|---|
| Purity | 99% min |
| Thermal analysis data | 550 J/g max |
| Freezing point | 16°C |
| Water | 1% max |
Applications
12-Crown-4 is a macrocyclic polyether widely used in chemistry, analytical science, and materials research. Its cavity size allows selective complexation with small cations, particularly lithium ions, making it valuable in phase-transfer catalysis and ion-selective extractions. In synthetic chemistry, it serves as a ligand to enhance the solubility of salts in organic solvents, facilitating nucleophilic substitution, polymerization, and other reactions requiring metal cations in nonpolar media. In analytical chemistry, 12-crown-4 is employed in ion-selective electrodes, sensors, and separation techniques to improve selectivity and sensitivity for lithium detection. It is also used in supramolecular chemistry and host–guest systems for studying molecular recognition, cation transport, and self-assembly, contributing to materials science, catalysis, and molecular electronics research.
Benefits
The benefits of 12-crown-4 stem from its selective cation binding, chemical stability, and versatility in synthesis and analysis. Its four-oxygen crown structure provides high affinity and selectivity for lithium ions, enabling efficient phase-transfer catalysis and ion extraction even in challenging reaction media. The compound is chemically stable under standard laboratory conditions, allowing repeated use and reliable performance. Its solubility in various organic solvents enhances reaction efficiency and broadens its applicability in synthetic and analytical procedures. Additionally, 12-crown-4's ability to form host–guest complexes supports molecular recognition studies, cation transport investigations, and the development of supramolecular materials. These properties make it a valuable tool for chemists and researchers working with cationic species, selective sensors, and advanced materials.
Conclusion
In summary, 12-crown-4 is a versatile macrocyclic ligand with applications in phase-transfer catalysis, analytical chemistry, supramolecular systems, and materials research. Its benefits-including selective lithium complexation, chemical stability, and formulation versatility-enable efficient synthesis, sensitive ion detection, and advanced studies in molecular recognition. By facilitating cation binding, transport, and host–guest chemistry, 12-crown-4 continues to support innovation in synthetic chemistry, analytical techniques, and supramolecular materials.
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