Product Introduction
18-crown-6 is an organic compound with the formula C12H24O6. It belongs to the macrocyclic ether class, characterized by a large ring in the molecular structure, with multiple oxygen atoms distributed on the ring. The name 18-crown-6 comes from the fact that there are a total of 18 atoms in the ring, six of which are oxygen atoms.
Product Properties
|
Product Name: |
18- crown ether -6 |
|
CAS NO.: |
17455-13-9 |
|
Molecular Formula: |
C12H24O6 |
|
Structural Formula: |
|
|
Molecular Weight: |
264.32 |
|
Assay: |
99% min |
|
Appearance: |
Off-white solid |
|
Crystallization point: |
38℃ ~ 41℃ |
|
Solubility: |
It is soluble in water, alcohol, ethyl acetate, dichloromethane, trichloromethane. |
Product Application
18-Crown-6 Ether is always used for cyanoacrylate (502) adhesive curing accelerator, phase transfer catalyst in organic synthesis chemistry.And it is also used as complexing agent, extractant for separation and extraction of precious metals and rare earth elements, ionic conductive materials for electronic industry and liquid crystal display components.
1. Phase transfer catalyst: Used in organic synthesis as a highly efficient phase transfer catalyst to facilitate the reaction between two phases that are insoluble in each other, such as the organic phase and the aqueous phase.
2. Complexing agent: Can form stable complexes with certain metal ions (especially potassium ion K+, due to size matching), this property makes it useful in the separation and purification of precious metals and rare earth elements.
3. Extractant: Used to extract specific ions from a solution, especially in analytical chemistry and industrial processes.
4. Ionic conductive materials: Components used in the electronics industry as ionic conductors, with possible applications such as batteries or supercapacitors.
5. Liquid crystal display element: due to its special molecular structure and physical properties, it can also be used in the research and production of liquid crystal materials.
Product Packaging & Storage
500g/ plastic bottle, 20kg/ plastic drum, 25kg/ cardboard drum. Store in a cool, dry and ventilated place away from light.
FAQ
Q: How effective is 18-crown-6 as a phase transfer catalyst?
A: 18-crown-6 is a very effective phase transfer catalyst that can significantly increase the reaction rate between aqueous and non-aqueous phases, especially for reactions that would otherwise be difficult to carry out under homogeneous conditions. By stabilizing the ions in the reaction and promoting their transfer between the two phases, it accelerates the reaction process and increases the yield.
Q: Which metal ions do 18-crown-6 have the strongest complexation capacity?
A: 18-crown-6 is particularly strong in the complexation of potassium ions (K+), which is due to the fact that the size of its ring matches the radius of the potassium ion very well, forming a stable complex. In addition, it can also form complexions with some other alkali metals and alkaline earth metal ions, but the complexation capacity is relatively weak.
Q: How to use 18-crown-6 for efficient ion separation?
A: Using the complex selectivity of 18-crown ether-6, specific metal ions can be selectively separated and enriched from mixtures by liquid-liquid extraction, solid phase extraction and other technologies. It is often necessary to adjust the pH value and use the appropriate solvent system to optimize the separation conditions to achieve an efficient and highly selective separation.
Hot Tags: 18- crown ether -6, China 18- crown ether -6 manufacturers, suppliers, factory, TPAB for ptc, pyromellitic acid dianhydride, solution of Tetraethylammonium hydroxide, Pentaerythritol for coating, Propylene Glycol for fragrances, catalyst TMAC
