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General Presentation
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CAS N° : 557-48-2
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EINECS number : 209-178-6
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FEMA number : 3377
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FLAVIS number : 05.058
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JECFA number : 1186
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Appearance : Colorless liquid
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Density : 0,86
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Volatility : Head
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Price Range : €€€€€
Physico-chemical properties
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Molecular formula : C9H14O
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Molecular Weight : 138,21 g/mol
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Log P : Donnée indisponible.
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Fusion Point : Donnée indisponible.
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Boiling Point : 95°C (à 18 mmHg)
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Detection Threshold : De l'ordre du ppb, 10 millionièmes de pourcent
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Optical rotation : Donnée indisponible
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Vapor pressure : Donnée indisponible
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Refractive Index @20°C : Donnée indisponible
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Acid Value : Donnée indisponible.
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Flash Point : 83°C
Uses
Uses in perfumery :
Trans-2-cis-6-Nonadienal is used in marine, cucumber and melon notes, to bring, in small quantities, a vegetal bouquet effect.
Year of discovery :
Data not available.
Natural availability :
Trans-2-cis-6-Nonadienal was found to be one of the major compounds responsible for the smell of Violet Leaf Absolute. It is the most used plant to isolate this molecule.
Isomerism :
The diastereoisomers of the molecule all have a relatively similar smell reminiscent of cucumber and violet leaf. Nevertheless, trans-2-cis-6-Nonadienal is the most commonly used isomer. Triplal® is a constitutional isomer of trans-2-cis-6-Nonadienal, but has a very green-cut grass smell, which is very different.
Synthesis precursor :
Trans-2-cis-6-Nonadienal forms Schiff bases in the presence of Methyl Anthralinate or Indole.
Synthesis route :
Trans-2-cis-6-Nonadienal is synthesized by a condensation of malonic acid with cis-4-Heptenal to give trans-2-cis-6-nonadienoic acid. Then, an esterification reaction with methanol in an acidic medium allows to obtain the corresponding ester. A reduction of this ester with lithium tetrahydruroaluminate allows to synthesize the corresponding alcohol. Finally, an oxidation with potassium permanganate allows to obtain the desired final aldehyde.
Regulations & IFRA
Allergens :
This ingredient does not contain any allergen.
IFRA 51th :
This ingredient is not restricted for the 51th amendment
