Cinnamyl alcohol
- Trans - cinnamic
- (E)- cinnamyl
- Styron
- Trans-3- Phenylallylalkohol
- FEMA 2294
Sweet - scented hyacinths balsamatisch by needles
Fixed
1.04 g · cm -3 ( 25 ° C)
31-34 ° C
258 ° C
1.33 hPa ( 114 ° C)
Poorly in water (1.8 g · l-1 at 20 ° C)
Attention
2000 mg · kg -1 ( LD50, rat, oral)
Template: Infobox chemical / molecular formula search available
Cinnamyl alcohol (3- phenyl-2- propenol, FEMA 2294 ) is a naturally occurring fragrance that is used in the cosmetics industry. Cinnamyl alcohol is one of the aromatic compounds and an unsaturated alcohol with a trans -substituted carbon-carbon double bond in the side chain. The isomeric cis- or (Z) - cinnamyl alcohol has little meaning. The information in this article applies only to the trans - cinnamyl alcohol.
Occurrence
Cinnamyl alcohol is present in a variety of plants. He is also included in:
- Styrax
- Hyacinth flowers oil
- Daffodils oil
- Cinnamon leaf
- Balsam of Peru
Production and representation
Cinnamyl alcohol can be directly obtained from cinnamon or from cinnamaldehyde by the Meerwein - Ponndorf - Verley reduction in 75 % yield.
The reaction of Phenylpropargylalkohol by means of lithium aluminum hydride to cinnamyl alcohol is possible.
Properties
Physical Properties
Cinnamyl alcohol is sweet - scented hyacinths balsamatisch by needles. It is poorly soluble in water but readily soluble in diethyl ether and mixed with ethanol.
Chemical Properties
Cinnamyl alcohol can be oxidized with manganese dioxide at room temperature in ether to cinnamic aldehyde in 87 % yield.
Use
Cinnamyl alcohol is (perfume ) is used as an additive in cosmetics ( eg massage and baby oils, toilet paper ) to obtain a violet or hyacinth fragrance. It is also used for the preparation of compounds derived as hydrocinnamic.
Safety
Cinnamyl alcohol is a naturally occurring allergen.