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294-93-9 - 12-Crown-4, 98% - 1,4,7,10-Tetraoxacyclododecane - A11972 - Alfa Aesar

A11972 12-Crown-4, 98%

CAS-Nummer
294-93-9
Synonyme
1,4,7,10-Tetraoxacyclododecane

Größe Preis ($) Menge Verfügbarkeit
1g 20,80
5g 78,25
25g 324,00
Zum Warenkorb hinzufügen Zur Angebotsanfrage hinzufügen Artikel anzeigen

12-Crown-4, 98%

MDL
MFCD00005103
EINECS
206-036-5

Chemische Eigenschaften

Formel
C8H16O4
Molmasse
176.22
Schmelzpunkt
17°
Siedepunkt
68-70°/0.1mm
Flammpunkt
>109°(228°F)
Dichte
1.108
Brechungsindex
1.4620
Sensitivität
Light & Air Sensitive & Hygroscopic
Löslichkeit
Fully miscible in water.

Anwendungen

It serves as an aprotic "solvent" for alkali metals, the sodium solution is a strong reducing agent.

Bemerkungen

Light & Air Sensitive & Hygroscopic. Store under inert gas. Keep in a tightly closed container.

Literaturverweise

Dr. Xiaoguang Yang.; Dr. Carolyn B.; Knobler and Prof. Dr. M. Frederick Hawthorne. “[12]Mercuracarborand-4”, the First Representative of a New Class of Rigid Macrocyclic Electrophiles: The Chloride Ion Complex of a Charge-Reversed Analogue of [12]Crown-4.Angew. Chem. Int. Ed.1991,30(11), 1507-1508.

R.M. Izatt.; R.E. Terry.; L.D. Hansen.; A.G. Avondet.; J.S. Bradshaw.; N.K. Dalley.; T.E. Jensen.; J.J. Christensen.; B.L. Haymore. A calorimetric titration study of uni-and bivalent metal ion interaction with several thia derivatives of 9-crown-3, 12-crown-4, 15-crown-5, 18-crown-6, 24-crown-8, and with several oxathiapentadecanes in water or water-methanol solvents at 25°C.Inorg. Chim. Acta1978,301-8.

Crown ether suited to complexing lithium ions.

GHS Gefahren- und Sicherheitshinweise

Gefahrenhinweise (EU): H330-H315-H319-H361

Fatal if inhaled. Causes skin irritation. Causes serious eye irritation. Suspected of damaging fertility or the unborn child.

Sicherheitshinweise: P260-P284-P201-P280-P281-P304+P340-P305+P351+P338-P320-P405-P501a

Do not breathe dust/fume/gas/mist/vapours/spray. Wear respiratory protection. Obtain special instructions before use. Wear protective gloves/protective clothing/eye protection/face protection. Use personal protective equipment as required. IF INHALED: Remove to fresh air and keep at rest in a position comfortable for breathing. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Specific treatment is urgent (see label). Store locked up. Dispose of contents/container in accordance with local/regional/national/international regulations.

Weitere Referenzen

Beilstein
1363064
Gefahrenklasse
6.1
Verpackungsgruppe
II
Harmonized Tariff Code
2932.99
TSCA
Yes
RTECS
XF0550000

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