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

1,1-Dimethoxy-3,7-dimethylocta-2,6-diene Basic information
Product Name:1,1-Dimethoxy-3,7-dimethylocta-2,6-diene
Synonyms:FEMA 2305;CITRAL DIMETHYL ACETAL;1,1-dimethoxy-3,7-dimethylocta-2,6-diene;CITRAL DIMETHYL ACETAL 95+%;CITRAL DIMETHYL ACETAL, 95%, MIXTURE OF CIS AND TRANS;2,6-Octadiene, 1,1-dimethoxy-3,7-dimethyl-;citral dimethyl acetal, mixture of cis and trans;1,1-Dimethoxy-3,7-dimethylocta-2,6-dien
CAS:7549-37-3
MF:C12H22O2
MW:198.3
EINECS:231-434-0
Product Categories:Acyclic Monoterpenes;Biochemistry;Terpenes
Mol File:7549-37-3.mol
1,1-Dimethoxy-3,7-dimethylocta-2,6-diene Structure
1,1-Dimethoxy-3,7-dimethylocta-2,6-diene Chemical Properties
Boiling point 105-106 °C10 mm Hg(lit.)
density 0.89 g/mL at 25 °C(lit.)
vapor density 6.8 (vs air)
vapor pressure 9 mm Hg ( 102.7 °C)
refractive index n20/D 1.454(lit.)
FEMA 2305 | CITRAL DIMETHYL ACETAL
Fp 180 °F
form clear liquid
color Colorless to Almost colorless
Odorat 100.00 %. green floral citric lemon lime natural
Odor Typecitrus
JECFA Number944
LogP3.76
CAS DataBase Reference7549-37-3(CAS DataBase Reference)
NIST Chemistry Reference3,7-Dimethyl-2,6-octadienal, dimethyl acetal(7549-37-3)
EPA Substance Registry System2,6-Octadiene, 1,1-dimethoxy-3,7-dimethyl- (7549-37-3)
Safety Information
Hazard Codes Xi
Risk Statements 43
Safety Statements 36/37
WGK Germany 2
RTECS RG5330000
Hazard Note Irritant
HS Code 2911.00.5000
toxicityBoth the oral LD50 value in rats and the dermal LD50 value in rabbits exceeded 5 g/kg (Hart, 1971).
MSDS Information
ProviderLanguage
SigmaAldrich English
1,1-Dimethoxy-3,7-dimethylocta-2,6-diene Usage And Synthesis
Chemical PropertiesCitral dimethyl acetal has a fresh, lemon-like odor. The commercial product consists of a mixture of cis- and trans-isomers.
OccurrenceApparently has not been reported to occur in nature.
PreparationFrom citral and methyl alcohol in the presence of a catalyst, or by reacting citral with trimethyl orthoformate.
DefinitionChEBI: A monoterpenoid that is the acetal obtained by formal condensation of citral with methanol.
Taste threshold valuesTaste characteristics at 10 ppm: green, citrus, lemon, grapefruit, lime with woody and terpy nuance.
1,1-Dimethoxy-3,7-dimethylocta-2,6-diene Preparation Products And Raw materials
Raw materials3,7-dimethylocta-2,6-dienal oxime-->Methanol-->Trimethoxymethane-->Tetramethyl orthosilicate-->Citral
1,3-CYCLOOCTADIENE Methylglyoxal 1,1-dimethyl acetal Diphenyldimethoxysilane 2,6-Dimethoxybenzaldehyde N,N-Dimethylformamide acetal copolymer Dimethyldimethoxysilane ETHANE 1,4-Benzenedimethanol Acetal Dimethyl fumarate 1,1-Dimethoxyethane Diethoxydimethylsilane PHENYLETHYL ACETAL Benzhydrol Dimethyl ether Dimethoxymethane 1,1-Dimethoxy-3,7-dimethylocta-2,6-diene
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