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HomeProduct name list5-METHYL-2-HEPTEN-4-ONE

5-METHYL-2-HEPTEN-4-ONE

Synonym(s):Filbertone;Hazelnut ketone

5-METHYL-2-HEPTEN-4-ONE Structural

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  n20/D 1.444(lit.)
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)
ghs
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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