Photo credits: ScenTree SAS
Alpha-Terpineol
Woody > Coniferous > Terpenic > Etheric Solvent > Rosy
2-(4-methyl-1-cyclohex-3-enyl)propan-2-ol ; Lindenol® ; Para-menth-1-en-8-ol ; 1-para-menthen-8-ol ; 2-(4-methyl-1-cyclohex-3-enyl)propan-2-ol ; 2-(4-methyl-3-cyclohexen-1-yl)-2-propanol ; 1-methyl-4-isopropyl-1-cyclohexen-8-ol ; Alpha,alpha,4-trimethyl-3-cyclohexene-1-methanol
Photo credits: ScenTree SAS
| Company | Ingredient Name | Learn more | Naturality | Certifications | MOQ | Purity |
|---|---|---|---|---|---|---|
|
Natural Alpha Terpineol | Discover | Natural |
|
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|
TERPINEOL ALPHA G CRYSTALLISED
378
|
Discover | Molecule | - | - | |
|
Alpha Terpineol natural | Discover | Natural Aroma Chemicals | - | - | |
|
|
Terpineol Alpha | Discover | Synthetic Aroma Chemicals | - | - |
378
General Presentation
-
CAS N° :
98-55-5 -
EINECS number :
202-680-6 -
FEMA number :
3045 -
FLAVIS number :
2,014
-
JECFA number :
366 -
Volatility :
Head -
Price Range :
€
Physico-chemical properties
-
Appearance :
White solid -
Density :
0,934 -
Refractive Index @20°C :
Donnée indisponible. -
Optical rotation :
Donnée indisponible. -
Vapor pressure :
0,0486 mmHg @23°C -
Flash Point :
91°C (195,8°F)
-
Molecular formula :
C10H18O -
Molecular Weight :
154,25 g/mol -
Log P :
2,7 -
Fusion Point :
40°C (104°F) -
Boiling Point :
219°C (426,2°F) -
Detection Threshold :
280 à 350 ppb (0,000035%)
Chemistry & Uses
Uses in perfumery :
Alpha-Terpineol is used in perfume detergents and soaps. Used in lavender, lilac, freesia and lily of the valley notes for a clean effect. Used in lemon and other citrus notes, to rise them.
Year of discovery :
Data not available.
Natural availability :
Alpha-Terpineol can be extracted from the essential oil of many plants by fractional distillation, such as Camphorated Wormwood EO, Cardamom EO or Clary Sage EO.
Isomerism :
Terpineol is a mixture of isomers. Alpha-Terpineol can be isolated after its synthesis. gamma-Terpineol is majoritarily present in the synthesis result of Terpineol. That's why it is less expensive. Eucalyptol, Geraniol, Nerol and Linalool are some of Terpineol isomers. They do not share the same smell, often more floral or camphorated.
Synthesis precursor :
Alpha-Terpineol is a precursor to the synthesis of several compounds of olfactory interest. A hydrogenation synthesizes para-Menthan-8-ol. It can dehydrate under the action of acids to give a mixture of unsaturated cyclic terpenes. Terpine is obtained in a moderate acid medium. The most carried out reaction from alpha-Terpineol remains its esterification in Terpinyl acetate, with a smell of Bergamot EO.
Synthesis route :
Alpha-Terpineol is synthesized by a hydration reaction of alpha-Pinene in an acid medium, forming cis-Terpine. A partial dehydration of this compound in an acid medium allows to obtain alpha-Terpineol and several of its isomers. Further conversions from D-Limonene, Delta-3-Carene and Dipentene are possible to obtain synthetic Terpineol.
Stability :
Terpenes tend to polymerize by oxydation.
Very unstable in alkaline functional bases as soap. In this base, its smell in not percievable.
Other comments :
In comparision to other terpenes, Alpha-Terpineol has a distinctive rosy smell.
Labelling
Allergens :
This ingredient is classified as an allergen under European Regulation 2023/1545, dated August 26, 2023.
Its presence must therefore be declared on product labels when it exceeds 0.001% in leave-on products and 0.01% in rinse-off products.
Signal word :
Warning
Hazard pictograms :
Precautionary statements :
| HAZARD | PRECAUTION |
|---|---|
| H315 Causes skin irritation.
H319 Causes serious eye irritation. |
P280 Wear protective gloves/protective clothing/eye protection/face protection. P302 + P352 IF ON SKIN: Wash with plenty of water/… P305 + P351 + P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. |
IFRA
IFRA 51th :
This ingredient is not restricted for the 51th amendment
