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名称:18-冠醚-6
 

纯度:99% 包装:10kg/桶
结构式
    
    
CAS:  17455-13-9
分子式: C12H24O6
分子量: 264.32

中文名称: 18-冠醚-6

英文名称: 18-Crown-6
               1,4,7,10,13,16-Hexaoxacyclooctadecane

性质描述:  白色晶体,熔点  36-40°C,沸点116℃(26.6Pa)。闪点  >110°C ,可溶于水,冠醚又称大环醚,是含有多个氧原子的大环化合物。命名时,把环上所含原子的总数标注在“冠”字之前,其中所含氧原子数标注在名称之后。这是杜邦公司的Pedersen在1967年意外发现的,并发现这类化合物具有许多异常的特性。

产品质量
外观:        白色晶体
含量:        99%
熔点:        38~41

用途:冠醚最主要的特点之一,是可与各种金属盐、铵盐、有机阳离子化合物等形成稳定的络合物。利用这一性质,可将各种盐类溶于有机溶剂。冠醚可将阳离子螯环内,同时由于有朝外的有机基因可生成络合物,亦可溶于非极性的有机溶剂。这时,未被溶剂化的阴离子,以裸露的阴离子形式存在于溶剂中,故活性极大。

冠醚可使碱金属和有机碱金属化合物溶解在有机溶剂中。因而在有机合成、光学拆分、重金属螯合、分离、分析以及生理活性的医药、生物化学等方面找到广泛的应用。例如,用作相转移催化剂,使许多在传统条件下难以反应,甚至不发生的反应,能顺利地进行,这类反应速率快、条件简单、操作方便、产率高。

例如,安息香在水溶液中的缩合反应产率极低,如果在该水溶液中加入7%的冠醚,则可得到产率为78%的安息香。这一反应还可在苯(或乙腈)中进行,尽管氰化钾不溶于苯,但如果加入18-冠-6,则不仅能发生反应,而且产率可高达95%。

其它信息:
【Product Name】Hexaoxacyclo-octadecane  18-冠醚-6
【Synonyms】
1,4,7,10,13,16-hexaoxacyclooctadecane
18-Crown ether-6
Ethylene oxide cyclic hexamer
【CAS】17455-13-9
【Formula】C12H24O6
【Molecular Weight】264.32
【EINECS】241-473-5
【RTECS】MP4500000
【RTECS Class】Drug; Primary Irritant
【Merck】13,2630
【Beilstein/Gmelin】1619616
【Beilstein Reference】5-19-12-00601
【EC Class】harmful
Physical and Chemical Properties
【Appearance】Colorless solid.
【Solubility in water】Soluble
【Melting Point】37 - 39
【Boiling Point】396
【Vapor Pressure】4E-6 (25 C)
【Density】1.237 g/cm3 (25 C)
【Partition Coefficient】-.81
【Heat Of Vaporization】62.1 kJ/mol
【Heat Of Combustion】-7071 kJ/mol
【Usage】Useful as a phase transfer catalyst.
【Refractive Index】1.4577 (50 C)
First Aid Measures
【Ingestion】If victim is conscious and alert, give 2-4 cupfuls of milk or water. Never give anything by mouth to an unconscious person. Get medical aid immediately.
【Inhalation】Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid.
【Skin】Get medical aid. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes.
【Eyes】Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid immediately.
Handling and Storage
【Storage】Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.
【Handling】Wash thoroughly after handling. Use with adequate ventilation. Minimize dust generation and accumulation. Avoid contact with eyes, skin, and clothing. Keep container tightly closed. Avoid ingestion and inhalation.
Hazards Identification
【Ingestion】The toxicological properties of this substance have not been fully investigated. May be harmful if swallowed.
【Inhalation】The toxicological properties of this substance have not been fully investigated. Inhalation of dust may cause respiratory tract irritation.
【Skin】Causes skin irritation. Substance is rapidly absorbed through the skin.
【Eyes】Causes eye irritation.
【EC Risk Phrase】R 22 36/38
【EC Safety Phrase
S 26 36/37/39
Exposure Controls/Personal Protection
【Personal Protection】Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166. Skin: Wear appropriate protective gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to prevent skin exposure.
【Respirators】Follow the OSHA respirator regulations found in 29CFR 1910.134 or European Standard EN 149. Always use a NIOSH or European Standard EN 149 approved respirator when necessary.
Fire Fighting Measures
【Flash Point】163
【Fire Fighting】Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. To extinguish fire use water spray, dry chemical, carbon dioxide, or chemical foam.
Accidental Release Measures
【Small spills/leaks】Vacuum or sweep up material and place into a suitable disposal container. Avoid generating dusty conditions.
Stability and Reactivity
【Disposal Code】3
【Stability】No data.
【Incompatibilities】Strong oxidizing agents - strong acids.
【Decomposition】Carbon monoxide, carbon dioxide.
Transport Information
【HS Code】2932 99 95



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