5-METHYL-2-HEPTEN-4-ONE
Synonym(s):Filbertone;Hazelnut ketone
- CAS NO.:81925-81-7
- Empirical Formula: C8H14O
- Molecular Weight: 126.2
- MDL number: MFCD00792509
- SAFETY DATA SHEET (SDS)
- Update Date: 2024-07-18 18:48:51
What is 5-METHYL-2-HEPTEN-4-ONE?
Description
5-Methyl-2-hepten-4-one has a hazelnut, metallic, buttery odor and a hazelnut, buttery, mushroom taste.
Chemical properties
(2E)-5-Methyl-2-hepten-4-one has a fruity, hazelnut, and green odor reminding of dried
fruits and a characteristic, nutty, roasted, and nougat-like hazelnut flavor. It was
identified as the character compound of natural hazelnut flavor. Preparation is possible, for example, by Grignard reaction of 2-butyl magnesium chloride with
crotonaldehyde and subsequent oxidation or by reaction of 2-methylbutanoyl
chloride with propene.
The material is used in fragrances as top-note booster in exotic fruit and citrus
notes and in nut, cocoa, coffee, and so on, flavors.
Chemical properties
5-Methyl-2-hepten-4-one has a hazelnut, metallic, buttery odor and a hazelnut, buttery, mushroom taste.
Occurrence
Reported found in roasted hazelnuts and roasted filberts.
Aroma threshold values
Aroma characteristics at 1.0%: sweet roasted hazelnuts, rich nutty with a roasted nut skin.
Taste threshold values
Taste characteristics at 5 ppm: nutty, roasted, coffee, cocoa, brown with an earthy brown and meaty nuance, sugar fondant, delicate, hazelnut, with macadamia and pecan nuances
Trade name
Filbertone (Symrise).
Properties of 5-METHYL-2-HEPTEN-4-ONE
Melting point: | -66.9°C (estimate) |
Boiling point: | 170 °C(lit.) |
Density | 0.845 g/mL at 25 °C(lit.) |
FEMA | 3761 | 5-METHYL-2-HEPTEN-4-ONE |
refractive index | n |
Flash point: | 126 °F |
Odor | at 1.00 % in dipropylene glycol. raw nut skin myrcene ketonic sweet hazelnut filbert |
JECFA Number | 1133 |
CAS DataBase Reference | 81925-81-7(CAS DataBase Reference) |
EPA Substance Registry System | 2-Hepten-4-one, 5-methyl- (81925-81-7) |
Safety information for 5-METHYL-2-HEPTEN-4-ONE
Signal word | Warning |
Pictogram(s) |
Flame Flammables GHS02 |
GHS Hazard Statements |
H226:Flammable liquids |
Precautionary Statement Codes |
P210:Keep away from heat/sparks/open flames/hot surfaces. — No smoking. |
Computed Descriptors for 5-METHYL-2-HEPTEN-4-ONE
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