Photo credits: ScenTree SAS
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General Presentation
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CAS N° :
259854-70-1 -
EINECS number :
452-280-2 -
FEMA number :
Donnée indisponible. -
FLAVIS number :
Donnée indisponible.
-
JECFA number :
Donnée indisponible. -
Volatility :
Base -
Price Range :
€€€€
Physico chemical properties
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Appearance :
Colorless liquid -
Density :
0,93 -
Refractive Index @20°C :
Data not available. -
Optical rotation :
Data not available. -
Vapor pressure :
Data not available. -
Flash Point :
>93°C
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Molecular formula :
C15H26O -
Molecular Weight :
222,37 g/mol -
Log P :
5,6 -
Fusion Point :
Donnée indisponible. -
Boiling Point :
258°C -
Detection Threshold :
0,1 ng/l air
Chemistry & Uses
Year of discovery :
Discovered in 1998
Natural availability :
Cosmone® does not exist on a natural state. Thus, it can't be used as extracted from a plant.
Isomerism :
Cosmone® has two diastereisomers, trans and cis. In perfumes, a blend of these two isomers is used, because they do not have a strong olfactive difference. Cosmone® is initially a blend of two positional isomers, called Cosmone® I and II. Both are obtained during the synthesis, and can be separated by distillation. Cosmone® is a constitutional isomer of some sandalwood alcohols as Javanol® or Polysantol®. Nevertheless, they do not have any olfactive similarities.
Synthesis precursor :
Cosmone® is not used for the synthesis of another molecule of olfactive interest.
Synthesis route :
Cosmone® is synthesized by a Wittig reaction in an alkaline medium, involving (4-carboxy-3-methylbutyl)triphenylphosphonium bromide and methyl 9-oxononanoate. This frist step leads to an ester, esterified using methanol (catalysor : paratoluensulfonic acid). Putting the ester in contact with pure sodium leads to a Bouveau-Blanc rearrangement, cycling the intermediary product into two acetates, linked by a positional isomery. To remove the ester groups from these two molecules, a reductive deacetoxylation is carried out with ammonia and calcium. This way, both Cosmone® isomers are obtained, to be separated by distillation.
Stability :
Stable in perfumes and in diverse functional bases, except in liquid bleach and candle bases.
Other comments :
Cosmone® can be used in very low quantity to bring an elegant effect.
Regulations & IFRA
Allergens :
This ingredient does not contain any allergen.
IFRA 51th :
This ingredient is not restricted for the 51th amendment
