methylheptenone Chemical Properties

Melting point:

-66.9°C

Boiling point:

189.35°C (estimate)

Density 

0.8840 (estimate)

refractive index 

1.4348 (estimate)

Odor

at 1.00 % in propylene glycol. nutty hazelnut

Odor Type

nutty

LogP

1.947 (est)

EPA Substance Registry System

Methyl heptenone (409-02-9)

Safety Information

Hazardous Substances Data

409-02-9(Hazardous Substances Data)

methylheptenone Usage And Synthesis

Chemical Properties

Methylheptenone is a colorless to pale yellow oily liquid with a fruity and lemongrass aroma similar to amyl acetate. A certain amount of acetone can be generated after oxidation. The boiling point is 173-174°C or 73°C (2400Pa), and the melting point is -67.1°C. Flash point 50 ℃.

Uses

GB 2760--1996 stipulates that the edible spices are allowed to be used. Methylheptenone is mainly used to prepare flavors such as bananas, pears, citrus and berries, nuts and vegetables.

Synthesis

Methylheptenone is obtained by fractionating the essential oil containing the product (such as lemongrass oil), taking the fraction at 160-180°C and treating it with sodium bisulfite.