Product Introduction
12-Crown-4 (12-crown-4) is an organic compound belonging to the crown ether family with a molecular formula of C8H16O4 and a molecular weight of 176.21 g/mol. Crown ether is a class of polyoxy-heterocyclic compounds with a ring structure, in which 12-crown ether-4 contains a ring structure composed of 8 carbon atoms and 4 oxygen atoms, which can envelope and recognize specific cations, showing guest-agent chemical properties.
Product Properties
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Product Name: |
12- Crown ether -4 |
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CAS NO.: |
294-93-9 |
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Molecular Formula: |
C8H16O4 |
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Structural Formula: |
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Molecular Weight: |
176.21 |
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Assay: |
98% min |
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Appearance: |
Colorless to light yellow liquid. |
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Boiling point: |
61℃-70 °C (0.5 mm Hg) |
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Solubility: |
Miscible with water, soluble in alcohol, ethyl acetate, dichloromethane, trichloromethane. |
Product Application
Ligand compounds: 12-crown-4 is an important ligand compound that is particularly suitable for forming stable complexes with certain metal ions, especially smaller cations such as lithium ion Li+. This capability makes it widely used in chemical analysis, especially in the fields of separation and extraction.
Ion recognition and separation: In the chemical separation process, 12-crown-4 can specifically recognize and bind to certain cations, so as to achieve effective separation of these ions in the mixture. This is very useful for purification processes and analytical chemistry.
Sensor technology: Due to its ability to recognize specific ions, 12-crown-4 is also used to design and manufacture a variety of ion sensitive sensors that are capable of responding to the presence of target ions under specific conditions, with applications ranging from environmental monitoring to biomedical diagnostics.
Catalytic applications: Although not as prominent as its application in ion recognition, 12-crown-4 can also be used as a phase transfer catalyst to facilitate reactions in two-phase systems (such as organic and aqueous phases), increasing reaction rates and selectivity.
Product Packaging & Storage
500mL bottle, 25KG, 200L plastic bucket. Store in a cool, dry and ventilated place away from light.
FAQ
Q: To which ions does 2-crown-4 have the highest selectivity?
A: 12-crown-4 is particularly suitable for forming stable complexes with small diameter cations such as lithium ions (Li+), and therefore exhibits high selectivity when it comes to the separation, purification of lithium salts, or as a lithium-ion battery component. In addition, it can also interact with other small to medium sized cations such as sodium ions (Na+), but the selectivity is reduced compared to lithium ions.
Q: What are the advantages of using 12-crown-4 as a phase transfer catalyst?
A: Advantages of using 12-crown-4 as a phase transfer catalyst include:
Improve the reaction efficiency: It can promote the material transfer between the two phases (usually the water phase and the organic phase) and accelerate the reaction rate.
Enhanced selectivity: helps in the selection of specific reaction paths and reduces the generation of by-products.
Simplified post-treatment: The separation and purification steps of products are simplified by efficient catalysis in heterogeneous systems.
Wide range of application: can be used for many types of chemical reactions, such as halogenation reaction, esterification reaction, etc
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