Cycloocten

Bezeichnung:Cycloocten

CAS-Nr931-88-4

Englisch Name:cis-Cyclooctene

CBNumberCB4193267

SummenformelC8H14

Molgewicht110.2

MOL-Datei931-88-4.mol

Synonyma

Cycloocten

Cycloocten physikalisch-chemischer Eigenschaften

Schmelzpunkt	−16 °C(lit.)
Siedepunkt	32-34 °C12 mm Hg(lit.)
Dichte	0.848 g/mL at 20 °C(lit.)
Brechungsindex	n20/D 1.470
Flammpunkt	77 °F
Wasserlöslichkeit	Insoluble in water
Farbe	Colorless to Almost colorless
BRN	1901031
LogP	3.930
CAS Datenbank	931-88-4(CAS DataBase Reference)
NIST chemische Informationen	Cyclooctene(931-88-4)
EPA chemische Informationen	Cyclooctene (931-88-4)

Sicherheit

Kennzeichnung gefährlicher	Xn
R-Sätze:	10-65
S-Sätze:	29-33-62-16
RIDADR	UN 3295 3/PG 3
WGK Germany	3
HS Code	2902.19.0050
HazardClass	3.2
PackingGroup	III

Gefahreninformationscode (GHS)

cis-Cyclooctene Chemische Eigenschaften,Einsatz,Produktion Methoden

R-Sätze Betriebsanweisung:
R10:Entzündlich.
R65:Gesundheitsschädlich: kann beim Verschlucken Lungenschäden verursachen.
S-Sätze Betriebsanweisung:
S29:Nicht in die Kanalisation gelangen lassen.
S33:Maßnahmen gegen elektrostatische Aufladungen treffen.
S62:Bei Verschlucken kein Erbrechen herbeiführen. Sofort ärztlichen Rat einholen und Verpackung oder dieses Etikett vorzeigen.
S16:Von Zündquellen fernhalten - Nicht rauchen.
läuterung methode
The cis-isomer is freed from the trans-isomer by fractional distillation through a spinning-band column, followed by preparative gas chromatography on a Dowex 710-Chromosorb W GLC column. It is passed through a short alumina column immediately before use [Collman et al. J Am Chem Soc 108 2588 1986]. It has also been distilled in a dry N2 glove box from powdered fused NaOH through a Vigreux column (p 11), then passed through activated neutral alumina before use [Wong et al. J Am Chem Soc 109 4328 1987]. Alternatively it can be purified via the AgNO3 salt. This salt is obtained from crude cyclooctene (40 mL) by shaking at 70-80o with 50% w/w AgNO3 (2 x 15 mL) to remove cyclooctadienes (aqueous layer). Extraction is repeated at 40o (4 x 20 mL, of 50% AgNO3). Three layers are formed each time. The middle layer contains the AgNO3 adduct of cyclooctene which crystallises on cooling the layer to room temperature. The adduct (complex 2:1) is highly soluble in MeOH (at least 1g/mL) from which it crystallises in large flat needles when cooled at 0o. It is dried under slight vacuum for 1 week in the presence of CaCl2 and paraffin wax soaked in cyclooctene. It has m 51o and loses hydrocarbon on exposure to air. cis-Cyclooctene can be recovered by steam distillation of the salt, collected, dried (CaCl2) and distilled in vacuum. [Braude et al. J Chem Soc 4711 1957, AgNO3: Jones J Chem Soc 1808 1954, Cope & Estes J Am Chem Soc 72 1128 1950, Beilstein 5 I 35, 5 IV 263.] FLAMMABLE LIQUID.

cis-Cyclooctene Upstream-Materialien And Downstream Produkte

Cycloocten Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

931-88-4, cis-Cyclooctene Verwandte Suche:

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