Photo credits: ScenTree SAS
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General Presentation
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CAS N° : 75-07-0
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EINECS number : 200-836-8
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FEMA number : 2003
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FLAVIS number : 05.001
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JECFA number : 80
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Appearance : Colorless liquid
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Density : 0,785
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Volatility : Head
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Price Range : €
Physico-chemical properties
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Molecular formula : C2H4O
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Molecular Weight : 44,05 g/mol
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Log P : 0,5
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Fusion Point : -125°C
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Boiling Point : 21°C
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Detection Threshold : 0,7 et 200 ppb
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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 : -40°C
Uses
Uses in perfumery :
Acetaldehyde is used in perfumery to bring a juicy note to fruity accords, more often for exotic fruits.
Year of discovery :
Data not available.
Natural availability :
Acetaldehyde is present in the odorous principle of many fruits, many liquors, and can be extracted from certain essential oils such as Litsea Cubeba EO, Magnolia Flower EO, Rosemary EO and many others, in which it is present in very small quantities.
Isomerism :
Acetaldehyde does not have any isomer used in perfumery.
Synthesis precursor :
Acetaldehyde is used in the manufacture of several synthetic compounds such as Damascone-Alpha® or Bourgeonal™, where it is used for aldol condensation. It is also used in acetalization reactions, such as for the synthesis of Hyacinth Body®. It can also be used for the synthesis of Cinnamic Aldehyde, by condensation with Benzaldehyde. It is used in many other syntheses.
Synthesis route :
Acetaldehyde can be synthesized in several ways: the first one is by oxidation of Ethanol with potassium dichromate, in the presence of concentrated sulphuric acid as a catalyst. The second method is by adding water to acetylene. A final synthesis route is hemisynthetic, by fermentation of a plant, then recovery by fractional distillation, and purification by amination, followed by the addition of diluted sulfuric acid.
Regulations & IFRA
Allergens :
This ingredient does not contain any allergen.
IFRA 51th :
This ingredient is not restricted for the 51th amendment
