Photo credits: ScenTree SAS
| Company | Ingredient Name | ID | Comments | Naturality | Certifications | Purity | Latin name | Treated part | Geographical origin | MOQ |
|---|---|---|---|---|---|---|---|---|---|---|
|
Irone-Alpha - 30gr | - |
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Irone-Alpha - 30gr
Certifications :
General Presentation
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CAS N° : 79-69-6
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EINECS number : 201-219-6
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FEMA number : 2597
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FLAVIS number : 07.011
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JECFA number : 403
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Appearance : Colorless liquid
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Density : 0,933
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Volatility : Heart/Base
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Price Range : €€€€€
Physico-chemical properties
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Molecular formula : C14H22O
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Molecular Weight : 206,33 g/mol
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Log P : >3,80
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Fusion Point : Donnée indisponible.
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Boiling Point : 110°C (à 4 hPa)
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Detection Threshold : 7,373 ng/l air
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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 : 131°C
Uses
Uses in perfumery :
Alpha-Irone is used in orris root and violet flower notes. Ionones are more used because they are cheaper. To be combined with woody-ambery notes, such as Iso E Super. Gives tenacity.
Year of discovery :
Discovered in 1892. Irones have been discovered before Ionones. The discovery of Ionones was made starting from Irones, isolated from orris butter. Ionones were discovered randomly, when a laboratory assistant added sulfuric acid to dishwash a glass containing a wrong intermediary to irone synthesis. Structural discovery in 1943.
Natural availability :
The only plant extract capable of providing natural Irones is Orris Root Butter (or any other orris root extracts). Therefore, its cost is very high, and these compounds are preferrably obtained by organic synthesis.
Isomerism :
As for Ionones, the synthesis of Irones as Alpha-Irone gives rise to several isomers, although some are favoured by the choice of the catalyst during the cyclization of Pseudoirone. In the case of alpha-Irone, its purity can reach 90%. For example, beta-Irone has a softer smell but with the same iridescent and violet emphasis as alpha-Irone. Isoraldeine® and Cashmeran® are constitutional isomers of alpha-Irsone. Only Isoraldeine® has a close smell to violet-flower aspect of Irone.
Synthesis precursor :
alpha-Irone is not a precursor to the synthesis of another compound of olfactory interest.
Synthesis route :
Unlike Ionones, Irones as Alpha-Irone are not synthesized from Citral, but by condensation of 3,6,7-trimethyl-octa-2,6-dienal (which has a branched citral in its sixth carbon) with acetone. The compound obtained is called Pseudoirone. Then, the cyclization of the molecule is the same as for Ionones, using several catalysts to promote the preferential formation of alpha-Irone, beta-Irone or gamma-Irone. Note that, for alpha-Irone, phosphoric acid is preferred.
Regulations & IFRA
Allergens :
This ingredient does not contain any allergen.
IFRA 51th :
This ingredient is not restricted for the 51th amendment
