oct-2-enal Chemical Properties

Boiling point:

190℃

Density 

0.832

FEMA 

3215 | 2-OCTENAL

Flash point:

68℃

Odor

at 1.00 % in propylene glycol. fatty green herbal

Odor Type

fatty

JECFA Number

1363

LogP

2.64

EPA Substance Registry System

2-Octenal (2363-89-5)

oct-2-enal Usage And Synthesis

Description

2-Octenal has a peculiar green-leafy odor which is less fatty than octanal with an orange, honey-like, cognac-like aroma. 2-Octenal may be prepared by prolonged heating of a solution of heptanal and formaldehyde in the presence of dimethylamino hydrochloride; by boiling 4,5-diketo-3-pentyltetrahydrofuran under a nitrogen blanket.

Chemical Properties

2-Octenal has a peculiar green-leafy odor, less fatty than octanal. This compound is also reported as having orange, honey-like, cognac-like aroma.

Occurrence

Reported found in potato chips, orange juice, cranberry, strawberry, asparagus, cabbage, peas, tomato, wheat and crisp bread, Russian cheeses, caviar, butter, yogurt, fish, beef and lamb fat, cured pork, roasted filberts and peanuts, peanut butter, soybean, mushroom, walnut, rice, corn tortillas, malt and sweet grass oil.

Definition

ChEBI: An enal consisting of oct-2-ene having an oxo group at the 1-position.

Preparation

By prolonged heating of a solution of heptanal and formaldehyde in the presence of dimethylamino hydrochloride; by boiling 4,5-diketo-3-penthyltetrahdyrofuran under a nitrogen blanket.

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