1,1-Dimethoxy-3,7-dimethylocta-2,6-dien

Bezeichnung:1,1-Dimethoxy-3,7-dimethylocta-2,6-dien

Englisch Name:1,1-Dimethoxy-3,7-dimethylocta-2,6-diene

CBNumberCB9367971

SummenformelC12H22O2

Molgewicht198.3

Synonyma

1,1-Dimethoxy-3,7-dimethylocta-2,6-dien

1,1-Dimethoxy-3,7-dimethylocta-2,6-dien physikalisch-chemischer Eigenschaften

Siedepunkt	105-106 °C10 mm Hg(lit.)
Dichte	0.89 g/mL at 25 °C(lit.)
Dampfdichte	6.8 (vs air)
Dampfdruck	9 mm Hg ( 102.7 °C)
FEMA	2305 \| CITRAL DIMETHYL ACETAL
Brechungsindex	n20/D 1.454(lit.)
Flammpunkt	180 °F
Aggregatzustand	clear liquid
Farbe	Colorless to Almost colorless
Geruch (Odor)	at 100.00 %. green floral citric lemon lime natural
Geruchsart	citrus
Wasserlöslichkeit	Almost insoluble in water
JECFA Number	944
LogP	3.76
CAS Datenbank	7549-37-3(CAS DataBase Reference)
NIST chemische Informationen	3,7-Dimethyl-2,6-octadienal, dimethyl acetal(7549-37-3)
EPA chemische Informationen	2,6-Octadiene, 1,1-dimethoxy-3,7-dimethyl- (7549-37-3)

Sicherheit

Kennzeichnung gefährlicher	Xi
R-Sätze:	43
S-Sätze:	36/37
WGK Germany	2
RTECS-Nr.	RG5330000
Hazard Note	Irritant
HS Code	2911.00.5000
Toxizität	Both the oral LD₅₀ value in rats and the dermal LD₅₀ value in rabbits exceeded 5 g/kg (Hart, 1971).

Gefahreninformationscode (GHS)

R-Sätze Betriebsanweisung:
R43:Sensibilisierung durch Hautkontakt möglich.
S-Sätze Betriebsanweisung:
S36/37:Bei der Arbeit geeignete Schutzhandschuhe und Schutzkleidung tragen.
Beschreibung
Citral dimethyl acetal is a colorless liquid. Sp.Gr. 0.89. B.P. slightly lower than that of Citral. Almost insoluble in water, soluble in alcohol and oils.
Chemische Eigenschaften
Citral dimethyl acetal has a fresh, lemon-like odor. The commercial product consists of a mixture of cis- and trans-isomers.
Occurrence
Apparently has not been reported to occur in nature.
Verwenden
Citral dimethyl acetal is used in perfume compositions partly as a mild-green topnote in soap fragrances, and also as a topnote modifier in delicate floral fragrances, green-citrusy types, fresh notes, etc. Used in flavor compositions mainly in Citrus types and generally in fruit flavors to introduce a natural freshness similar to that of unripe fruit or green Lemon peel, Apple peel, etc.
Definition
ChEBI: A monoterpenoid that is the acetal obtained by formal condensation of citral with methanol.
synthetische
From citral and methyl alcohol in the presence of a catalyst, or by reacting citral with trimethyl orthoformate.
Taste threshold values
Taste characteristics at 10 ppm: green, citrus, lemon, grapefruit, lime with woody and terpy nuance.