Ethyl-4-oxovalerat

Bezeichnung:Ethyl-4-oxovalerat

CAS-Nr539-88-8

Englisch Name:Ethyl levulinate

CBNumberCB8186889

SummenformelC7H12O3

Molgewicht144.17

MOL-Datei539-88-8.mol

Synonyma

Ethyl-4-oxovalerat

Ethyl-4-oxovalerat physikalisch-chemischer Eigenschaften

Schmelzpunkt	<25 °C
Siedepunkt	93-94 °C/18 mmHg (lit.)
Dichte	1.016 g/mL at 25 °C (lit.)
Dampfdruck	11Pa at 25℃
FEMA	2442 \| ETHYL LEVULINATE
Brechungsindex	n20/D 1.422(lit.)
Flammpunkt	195 °F
storage temp.	Sealed in dry,Room Temperature
Löslichkeit	H2O: freely soluble
Aggregatzustand	Liquid
Wichte	1.01
Farbe	Clear yellow
Geruch (Odor)	at 100.00 %. sweet fruity floral berry green pineapple rhubarb
Geruchsart	fruity
Wasserlöslichkeit	Soluble in water.
JECFA Number	607
Merck	14,3819
BRN	507641
Dielectric constant	12.0（21℃）
InChIKey	GMEONFUTDYJSNV-UHFFFAOYSA-N
LogP	0.324 at 20℃
CAS Datenbank	539-88-8(CAS DataBase Reference)
NIST chemische Informationen	Pentanoic acid, 4-oxo-, ethyl ester(539-88-8)
EPA chemische Informationen	Pentanoic acid, 4-oxo-, ethyl ester (539-88-8)

Sicherheit

Kennzeichnung gefährlicher	Xi
R-Sätze:	36/37/38
S-Sätze:	24/25
WGK Germany	2
RTECS-Nr.	OI1700000
Hazard Note	Irritant
TSCA	Yes
HS Code	29183000

Gefahreninformationscode (GHS)

Ethyl levulinate Chemische Eigenschaften,Einsatz,Produktion Methoden

R-Sätze Betriebsanweisung:
R36/37/38:Reizt die Augen, die Atmungsorgane und die Haut.
S-Sätze Betriebsanweisung:
S24/25:Berührung mit den Augen und der Haut vermeiden.
Chemische Eigenschaften
Ethyl levulinate has an ethereal, fruity, green, sweet, pineapple, apple, rhubarb odor.
Chemische Eigenschaften
clear yellowish liquid
Occurrence
Reported found in white bread, roasted onion, wheat bread, cognac, malt whiskey, grape wines, cocoa, bilberry wine, Bourbon vanilla and cherimoya (Annona cheremolia Mill.).
Verwenden
Ethyl levulinate is used to develop a preparative HPLC method to preserve wine aromas and isolates fruity characteristics of red wine aroma extracts
Verwenden
Solvent for cellulose acetate and starch ethers, flavoring.
Verwenden
Ethyl levulinate was used to develop a preparative HPLC method to preserve wine aromas and isolates fruity characteristics of red wine aroma extracts.
Definition
ChEBI: Ethyl levulinate is an oxo carboxylic acid.
synthetische
Usually obtained by direct esterification of levulinic acid with ethanol and H2SO4 in benzene or in toluene; also in the presence of HCI in ethanol; other methods starting from glucose, fructose and others are of less importance.
Taste threshold values
Taste characteristics at 40 ppm: fruity, green, waxy and melon.
Synthesis Reference(s)
The Journal of Organic Chemistry, 59, p. 486, 1994 DOI: 10.1021/jo00081a034
Synthetic Communications, 8, p. 279, 1978 DOI: 10.1080/00397917808065622
Allgemeine Beschreibung
Ethyl levulinate is diluent for biodiesel fuels with high saturated fatty acid content.
Flammability and Explosibility
Not classified
Sicherheitsprofil
A skin irritant. When heated to decomposition it emits acrid smoke and irritating fumes
läuterung methode
Stir the ester with Na2CO3 and charcoal, filter and distil. It is freely soluble in H2O and EtOH [IR, NMR: Sterk Monatsh Chem 99 1770 1968, Thomas & Schuette J Am Chem Soc 53 2328 1931, Cox & Dodds J Am Chem Soc 55 3392 1933]. [Beilstein 3 IV 1562.]

Ethyl levulinate Upstream-Materialien And Downstream Produkte

Ethyl-4-oxovalerat Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

539-88-8, Ethyl levulinate Verwandte Suche:

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