Ethyl-(2E,4Z)-2,4-decadienoat

Bezeichnung:Ethyl-(2E,4Z)-2,4-decadienoat

CAS-Nr3025-30-7

Englisch Name:FEMA 3148

CBNumberCB9758375

SummenformelC12H20O2

Molgewicht196.29

MOL-Datei3025-30-7.mol

Synonyma

Ethyl-(2E,4Z)-2,4-decadienoat

Ethyl-(2E,4Z)-2,4-decadienoat physikalisch-chemischer Eigenschaften

Schmelzpunkt	-60 °C
Siedepunkt	70-72 °C0.05 mm Hg(lit.)
Dichte	0.905 g/mL at 25 °C(lit.)
Dampfdruck	1.6hPa at 21.1℃
FEMA	3148 \| ETHYL TRANS-2,CIS-4-DECADIENOATE
Brechungsindex	n20/D 1.486(lit.)
Flammpunkt	>230 °F
storage temp.	2-8°C
Löslichkeit	Chloroform (Slightly), Methanol (Slightly)
Farbe	Colourless
Geruch (Odor)	at 10.00 % in dipropylene glycol. green waxy pear apple sweet fruity tropical
Geruchsart	green
JECFA Number	1192
BRN	1724176
LogP	4.1-4.7 at 35℃ and pH7
EPA chemische Informationen	2,4-Decadienoic acid, ethyl ester, (2E,4Z)- (3025-30-7)

Sicherheit

Kennzeichnung gefährlicher	Xi,N
R-Sätze:	38-50/53
S-Sätze:	24/25-61-60
RIDADR	UN 3082 9/PG 3
WGK Germany	1
RTECS-Nr.	HD3510900
F	10-23
HS Code	29161995
Toxizität	LD50 oral in rat: > 5gm/kg

Gefahreninformationscode (GHS)

FEMA 3148 Chemische Eigenschaften,Einsatz,Produktion Methoden

R-Sätze Betriebsanweisung:
R38:Reizt die Haut.
S-Sätze Betriebsanweisung:
S24/25:Berührung mit den Augen und der Haut vermeiden.
Chemische Eigenschaften
Ethyl (2E,4Z)-2,4-Decadienoate has been identified in pears and has the typical aroma of Williams pears. Synthesis of ethyl (2E,4Z)-2,4-decadienoate starts from (Z)-1-heptenyl bromide, which is converted into a 1-heptenyllithium cuprate complex with lithium and copper iodide. Reaction with ethyl propiolate yields a mixture of 95% ethyl (2E,4Z)- and 5% ethyl (2E,4E)-2,4-decadienoate. Pure ethyl (2E,4Z)-2,4-decadienoate is obtained by fractional distillation. A biotechnological process for its preparation has been developed.
Chemische Eigenschaften
clear colorless to yellowish liquid
Chemische Eigenschaften
Ethyl-trans-2, cis-4-decadienoate has a characteristic pear-like flavor and a light fruity aroma.
Occurrence
Reported found in Bartlett pears, apple, grape, durian (Durio zibethinus), pear brandy, quince and spineless monkey orange (Strychnos madagasc).
Verwenden
Potential applications include the profile enhancement of guava, melon, pear, apple, banana, kiwi, grape, golden delicious apple, fruit cocktail juices, fruit nectar, mamey and other tropical backgrounds.
Definition
ChEBI: Ethyl (2E,4Z)-deca-2,4-dienoate is a fatty acid ethyl ester resulting from the formal condensation of the carboxy group of (2E,4E)-deca-2,4-dienoic acid with the hydroxy group of ethanol. It has a role as a plant metabolite, a flavouring agent, a fragrance and a kairomone. It is functionally related to a (2E,4E)-deca-2,4-dienoic acid.
Aroma threshold values
Detection: 100 ppb. Aroma characteristics at 1.0%: sweet ripe pear, creamy and slightly fatty with fruity, green, waxy apple, fleshy nuances
Taste threshold values
Taste characteristics at 5 ppm: ripe pear, green fruity, waxy apple, tropical notes, fatty golden delicious apple fleshy. Taste characteristics at 20 ppm: green, fruity, apple and pear with waxy tropical nuances.
Synthesis Reference(s)
Tetrahedron, 36, p. 1961, 1980 DOI: 10.1016/0040-4020(80)80209-2
Allgemeine Beschreibung
Natural occurrence: Apple, pear, grape, pear brandy and quince.
Biochem/physiol Actions
Odor at 1.0%
Synthese
Synthetically via the lithium vinyl cuprates.

FEMA 3148 Upstream-Materialien And Downstream Produkte

Ethyl-(2E,4Z)-2,4-decadienoat Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

3025-30-7, FEMA 3148 Verwandte Suche:

Send Inquriy