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18-Crown-6
0.0
0.0
1000
Synonyms:
1,4,7,10,13,16-Hexaoxacyclooctadecane; Hexaoxacyclo-octadecane; 18-Crown 6-ether
CAS No.:
17455-13-9
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+
:
0
Description
[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[,
]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]
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Chemical Name |
18-Crown-6 |
|
Synonyms |
1,4,7,10,13,16-Hexaoxacyclooctadecane; Hexaoxacyclo-octadecane; 18-Crown 6-ether |
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CAS No. |
17455-13-9 |
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Molecular formula |
C12H24O6 |
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Molecular weight |
264.32 |
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Molecular Structure |
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|
Details |
Appearance: white solid Чысціня: 99,0% мін. |
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Main Application |
Cyanoacrylate adhesive curing accelerator, phase transfer catalyst in synthetic organic chemistry. Extraction and separation of extractant - complexing agent, precious metals and rare earth elements, the electronics industry ion conductive materials, liquid crystal display element material. |
Key Features
Exceptional Metal Ion Selectivity
18 - Crown - 6 is renowned for its high selectivity towards specific metal ions. Its unique crown - shaped structure allows it to form stable complexes with metal ions of appropriate size. Notably, it has a strong affinity for potassium ions (K⁺), encapsulating the ion within its central cavity. This selectivity is invaluable in separation processes, where it can be used to selectively extract target metal ions from mixtures. In chemical analysis, it enables the precise detection and quantification of specific metal ions.
Robust Complexation Capability
The complexation ability of 18 - Crown - 6 stems from the oxygen atoms in its structure. These oxygen atoms can donate electron pairs to metal ions, forming coordination bonds. The resulting metal - crown ether complexes often exhibit distinct properties. For example, they may have altered solubility, which can be exploited in phase - transfer reactions. In some cases, the complexation can enhance the reactivity of the metal ion or protect it from unwanted side reactions, making 18 - Crown - 6 a powerful tool in organic synthesis and catalysis.
High - Grade Purity
Our 18 - Crown - 6 is available in high - purity grades. The minimum purity of our standard product is 98%, and for premium products, it can reach up to 99.5%. We enforce strict quality control throughout the production process. Each batch undergoes comprehensive testing for purity, melting point, solubility, and complexation efficiency. This ensures that our product consistently meets and surpasses the highest industry standards, providing you with a reliable and high - performing chemical reagent.
Applications
Organic Synthesis
- Phase - Transfer Catalysis: 18 - Crown - 6 is widely employed as a phase - transfer catalyst in organic reactions. In reactions involving immiscible phases, such as an aqueous and an organic phase, the crown ether can shuttle ionic reactants between the two phases. For instance, in the synthesis of esters from carboxylate salts and alkyl halides, 18 - Crown - 6 complexes with the metal cation associated with the carboxylate ion, facilitating its transfer to the organic phase where it reacts with the alkyl halide. This significantly boosts the reaction rate and yield.
- Reaction Rate Enhancement: In certain organic reactions, the complexation of 18 - Crown - 6 with metal ions can accelerate the reaction. In nucleophilic substitution reactions, the presence of a metal - crown ether complex can increase the reactivity of the nucleophile, leading to faster reaction kinetics and more efficient product formation.
Analytical Chemistry
- Metal Ion Detection and Separation: In analytical chemistry, 18 - Crown - 6 is used for the detection and separation of metal ions. Its selective complexation with specific metal ions can be harnessed in chromatographic techniques. For example, in ion - exchange chromatography, columns can be modified with 18 - Crown - 6 to selectively retain and separate metal ions based on their complexation ability. This is particularly useful in environmental analysis, where the determination of trace metal ions in water, soil, or air samples is essential.
- Sensor Development: 18 - Crown - 6 can be incorporated into sensors for the detection of metal ions. By attaching a suitable reporter group to the crown ether, changes in the fluorescence, electrochemical, or optical properties of the sensor can be observed upon complexation with a specific metal ion. This enables the sensitive and selective detection of metal ions in various samples, including biological fluids and industrial effluents.
Materials Science
- Polymer Modification: In polymer science, 18 - Crown - 6 can be used to modify polymers. Incorporating 18 - Crown - 6 units into polymer chains endows the resulting polymers with unique properties. For example, the polymer may gain enhanced metal - binding capabilities, which can be exploited in applications such as metal ion removal from wastewater or in the preparation of self - assembling materials with specific metal - ion - mediated interactions.
- Ion - Conducting Materials: 18 - Crown - 6 can be used to fabricate ion - conducting materials. When complexed with metal salts, these materials can exhibit improved ionic conductivity, making them suitable for applications in batteries, fuel cells, and other electrochemical devices. The crown ether helps facilitate the movement of ions within the material, enhancing its overall electrochemical performance.
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Safety Information
Hazard Statements
- 18 - Crown - 6 is harmful if swallowed, inhaled, or absorbed through the skin.
- It may cause skin and eye irritation. Prolonged or repeated exposure may have adverse effects on health.
- Contact with strong oxidizing agents can trigger dangerous reactions.
Precautionary Measures
- When handling 18 - Crown - 6, always wear appropriate personal protective equipment, including chemical - resistant gloves, safety goggles, and a lab coat or protective apron.
- Work in a well - ventilated area, preferably under a fume hood, to avoid inhalation of dust or vapors.
- In case of contact with skin, immediately wash the affected area with plenty of water for at least 15 minutes and seek medical advice. If the compound gets into the eyes, rinse the eyes thoroughly with water for at least 15 minutes, lifting the eyelids occasionally, and then seek immediate medical attention.
- Do not eat, drink, or smoke in the area where 18 - Crown - 6 is being used.
Захоўванне
- Store 18 - Crown - 6 in a cool, dry place, away from direct sunlight and heat sources.
- Keep it in a tightly sealed container to prevent moisture absorption and contact with air, which could potentially degrade its chemical properties.
- Store it separately from incompatible substances such as strong oxidizing agents and acids to avoid dangerous reactions.
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Why Choose Our Product?
Quality Assurance
Our manufacturing process adheres to strict international standards. We operate a state - of - the - art production facility equipped with advanced analytical instruments for continuous quality monitoring. Each batch of 18 - Crown - 6 is thoroughly tested for purity, melting point, solubility, and complexation ability. This ensures that our product consistently meets and exceeds the highest industry standards, providing you with a reliable and high - performing chemical reagent.
Customized Solutions
We understand that different customers have diverse requirements. Whether you need a specific purity level, a particular packaging size, or a customized formulation for your unique application, our team of experts can collaborate with you to develop a tailored solution. We are committed to providing personalized service to meet your exact needs, ensuring that you get the most suitable product for your use.
Competitive Pricing
Despite our focus on delivering top - quality products, we offer 18 - Crown - 6 at competitive prices. We strive to balance cost - effectiveness with product excellence, providing you with the best value for your investment. Our pricing structure is transparent, with no hidden fees, allowing you to make informed purchasing decisions.
Fast and Reliable Delivery
We have an extensive global logistics network in place. Once you place an order, we ensure prompt processing and delivery. Our team works closely with reliable shipping partners to guarantee that your product reaches you in a timely manner, regardless of your location. We also provide tracking information, enabling you to monitor the progress of your shipment and plan your operations accordingly.
Order Now
Ready to experience the benefits of our high - quality 18 - Crown - 6? Place your order today by contacting our sales team at [phone number] or [email address]. Our dedicated and knowledgeable staff are ready to assist you with any questions or concerns you may have. We look forward to partnering with you and becoming your trusted supplier for all your 18 - Crown - 6 needs.
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