1,1-Dimethoxy-3,7-dimethylocta-2,6-diene
Synonym(s):3,7-Dimethyl-2,6-octadienal dimethyl acetal
- CAS NO.:7549-37-3
- Empirical Formula: C12H22O2
- Molecular Weight: 198.3
- MDL number: MFCD00008909
- EINECS: 231-434-0
- SAFETY DATA SHEET (SDS)
- Update Date: 2024-06-26 16:08:12
What is 1,1-Dimethoxy-3,7-dimethylocta-2,6-diene?
Description
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.
Chemical properties
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.
The Uses of 1,1-Dimethoxy-3,7-dimethylocta-2,6-diene
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.
Preparation
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.
Properties of 1,1-Dimethoxy-3,7-dimethylocta-2,6-diene
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) |
FEMA | 2305 | CITRAL DIMETHYL ACETAL |
refractive index | n |
Flash point: | 180 °F |
form | clear liquid |
color | Colorless to Almost colorless |
Odor | at 100.00 %. green floral citric lemon lime natural |
Water Solubility | Almost insoluble in water |
JECFA Number | 944 |
CAS DataBase Reference | 7549-37-3(CAS DataBase Reference) |
NIST Chemistry Reference | 3,7-Dimethyl-2,6-octadienal, dimethyl acetal(7549-37-3) |
EPA Substance Registry System | 2,6-Octadiene, 1,1-dimethoxy-3,7-dimethyl- (7549-37-3) |
Safety information for 1,1-Dimethoxy-3,7-dimethylocta-2,6-diene
Signal word | Warning |
Pictogram(s) |
Exclamation Mark Irritant GHS07 |
GHS Hazard Statements |
H227:Flammable liquids H315:Skin corrosion/irritation H317:Sensitisation, Skin H319:Serious eye damage/eye irritation |
Precautionary Statement Codes |
P210:Keep away from heat/sparks/open flames/hot surfaces. — No smoking. P261:Avoid breathing dust/fume/gas/mist/vapours/spray. P264:Wash hands thoroughly after handling. P264:Wash skin thouroughly after handling. P272:Contaminated work clothing should not be allowed out of the workplace. P280:Wear protective gloves/protective clothing/eye protection/face protection. P370+P378:In case of fire: Use … for extinction. P403+P235:Store in a well-ventilated place. Keep cool. P501:Dispose of contents/container to..… |
Computed Descriptors for 1,1-Dimethoxy-3,7-dimethylocta-2,6-diene
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