4-ALLYLPHENOL Chemical Properties

Melting point:

15.8°

Boiling point:

bp760 238°; bp16 123°

Density 

d415 1.0203; d420 1.0175

FEMA 

4075 | 4-ALLYLPHENOL

refractive index 

nD18 1.5441

pka

10.24±0.13(Predicted)

Odor

at 0.10 % in dipropylene glycol. phenolic medicinal herbal

Odor Type

phenolic

JECFA Number

1527

LogP

2.91

4-ALLYLPHENOL Usage And Synthesis

Chemical Properties

Colorless liquid; medicinal phenolic aroma

Physical properties

Colorless liquid, solidifying in the cold. M.P. 16°C. B.P,236°C. Sp.Gr. 1.02.
4-ALLYLPHENOL is very slightly soluble in water, soluble in alcohol. miscible with oils.

Occurrence

Reported found in Alpinia galanga oil (0.20%), bay leaf oil (<0.01–15.51%), bay leaf oil anise (0.8%), bay leaf oil clove (17.1%), and betel leaf.

Uses

4-Allylphenol is a useful building block naturally occurring in Syzygium aromaticum leaves. 4-Allylphenol has been used in the synthetic, regioselective preparation of gamma-lactones.

Application

4-ALLYLPHENOL is suggested for use in perfume compositions for "leather" or "smoke" effects, dry notes, etc. and - in the functional product - as an antiseptic. Unstable under alkaline conditions, discolors in the presence of Iron and other metals in trace amounts.

Production Methods

4-ALLYLPHENOL can be produced from Estragole (Methyl chavicol) by Grignard reaction with Ethyl Magnesium Bromide. Can also be isolated from Betel oil.

Definition

ChEBI: A phenylpropanoid that is phenol substituted by a prop-2-enyl group at position 4.

Aroma threshold values

High strength odor; phenolic type; recommend smelling in a 0.10% solution or less

4-ALLYLPHENOL(501-92-8)Related Product Information

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