6-METHYL-3,5-HEPTADIEN-2-ONE Chemical Properties

Boiling point:

95-96°C 20mm

Density 

0,89 g/cm³

FEMA 

3363 | 6-METHYL-3,5-HEPTADIEN-2-ONE

refractive index 

1.5340

Flash point:

95-96°C/20mm

Odor

at 1.00 % in dipropylene glycol. cinnamon coconut spice woody sweet weedy

Odor Type

spicy

Water Solubility 

Miscible with alcohol. Immiscible with water.

JECFA Number

1134

BRN 

1699937

LogP

1.68

EPA Substance Registry System

3,5-Heptadien-2-one, 6-methyl- (1604-28-0)

Safety Information

Hazard Codes 

Xi

Risk Statements 

10-36/38-36/37/38

Safety Statements 

26-36-36/37-37

RIDADR 

1224

TSCA 

Yes

PackingGroup 

III

HS Code 

29141900

MSDS

• Language:English Provider:ALFA

6-METHYL-3,5-HEPTADIEN-2-ONE Usage And Synthesis

Description

6-Methyl-3,5-heptadien-2-one has a cinnamon-like odor with a coconut undertone. May be prepared by reacting 2-methylbuten- 2-al with acetone in the presence of sodium ethylate or sodium hydroxide; by pyrolysis of tertiary actylenic carbinyl acetoacetates in the presence of an acid catalyst.

Chemical Properties

6-Methyl-3,5-heptadine-2-one has a cinnamon-like odor with a coconut undertone

Chemical Properties

Clear colorless to light yellow liquid

Occurrence

Reported as occurring in the oil of lavandin, grapes, tomato and tomato paste, green tea, filberts, cooked rice and rice bran, licorice, corn oil and lemon balm

Uses

6-Methyl-3,5-heptadien-2-one is used in the preparation of (RS)-(E)-2,6-dimethyl-1,2-epoxy-3,5-heptadiene.

Preparation

By reacting 2-methylbuten-2-al with acetone in the presence of sodium ethylate or sodium hydroxide; by pyrolysis of tertiary acetylenic carbinyl acetoacetates in the presence of an acid catalyst.

Aroma threshold values

Detection: 375 ppb

Taste threshold values

Taste characteristics at 30 ppm: green and sweet with a brown, herbal aftertaste.

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