Photo credits: ScenTree SAS
Alpha-Terpinene
1-methyl-4-propan-2-ylcyclohexa-1,3-diene ; 1-methyl-4-isopropyl-1,3-cyclohexadiene ; Para-mentha-1,3-diene ; 1,3-para-menthadiene ; 4-methyl-1-(1-methylethyl)-1,3-cyclohexadiene ; 1-methyl-4-(1-methyl ethyl)-1,3-cyclohexadiene ; 1-isopropyl-4-methyl-1,3-cyclohexadiene
Photo credits: ScenTree SAS
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General Presentation
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CAS N° : 99-86-5
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EINECS number : 202-795-1
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FEMA number : 3558
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Density : 0,837
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Optical rotation : Donnée indisponible
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Allergens : This ingredient does not contain any allergen.
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Refractive Index @20°C : Donnée indisponible
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Volatility : Head
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Price Range : €
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Appearance : Colorless liquid
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FLAVIS number : 01.019
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JECFA number : 1339
Information on synthetic ingredients
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Acid Value : Donnée indisponible
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Boiling Point : 174°C
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Detection Threshold : Donnée indisponible.
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Molecular formula : C10H16
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Log P : Donnée indisponible.
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Molecular Weight : 136,24 g/mol
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Fusion Point : Donnée indisponible.
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Flash Point : 50°C
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Vapor pressure : Donnée indisponible
Uses
Other comments :
In comparision to other terpenes, Alpha-Terpinene has a distinctive smell close to Lime EO.
Stability :
Terpenes tend to polymerize by oxydation.
Very unstable in alkaline functional bases as soap. In this base, its smell in not percievable.
Uses in perfumery :
Alpha-Terpinene is used in fruity and exotic notes, especially in mango for a spicy touch. Also used in woody and spicy notes, for freshness and a powerful top note.
Year of discovery :
Data not available.
Isomerism :
Alpha-Terpinene differs from beta-Terpinene, gamma-Terpinene and delta-Terpinene, its isomers. They all have a different smell. alpha-Terpinene is the most medicinal and most reminiscent of Lime EO. D-Limonene, Pinene, Myrcene and Ocimene are the constitutional isomers of Terpinene. They all belong to the terpene family, whose common point is that they can be synthesized by a Diels-Alder reaction, starting from Isoprene.
Synthesis precursor :
Alpha-Terpinene can be a precursor to the synthesis of other terpenes, for example by a Diels-Alder reaction.
Natural availability :
Alpha-Terpinene is found in many plant extracts, including Bergamot EO, Juniper Berry EO and Lime EO. It can be extracted from these plants essential oils.
Synthesis route :
Alpha-Terpinene is a terpene obtained by an isomerization of D-Limonene in an acidic medium.
Regulations & IFRA
This ingredient is not restricted
