(-)-alpha-Terpineol
Synonym(s):(S)-p-Menth-1-en-8-ol;(S)-2-(4-Methyl-3-cyclohexenyl)-2-propanol;(S)-(-)-α-Terpineol;p-Menth-1-en-8-ol
- CAS NO.：10482-56-1
- Empirical Formula: C10H18O
- Molecular Weight: 154.25
- MDL number: MFCD00075926
- EINECS: 233-986-8
- SAFETY DATA SHEET (SDS)
- Update Date: 2026-07-20 23:19:27
What is (-)-alpha-Terpineol?
The Uses of (-)-alpha-Terpineol
(S)-α-Terpineol comes from the essential oil extracted from the leaves of Zanthoxylum ailanthoides Sieb. Et Zucc. collected from Guizhou which possesses anti-oxidant activities.
Definition
ChEBI: The (S)-enantiomer of alpha-terpineol.
Synthesis Reference(s)
Journal of the American Chemical Society, 102, p. 7798, 1980 DOI: 10.1021/ja00546a037
Tetrahedron Letters, 35, p. 61, 1994 DOI: 10.1016/0040-4039(94)88162-6
The Journal of Organic Chemistry, 54, p. 4481, 1989 DOI: 10.1021/jo00280a002
General Description
α-Terpineol is a monoterpene alcohol. It is one of the components responsible for the antifungal activity of Melaleuca alternifolia (tea tree) essential oil. It is also found in Origanum essential oil and Rosmarinus officinalis essential oil.
Flammability and Explosibility
Not classified
Properties of (-)-alpha-Terpineol
| Melting point: | 31-35 °C(lit.) |
| Boiling point: | 217-218 °C(lit.) |
| Density | 0.93 g/mL at 25 °C(lit.) |
| vapor pressure | 2.79Pa at 20℃ |
| FEMA | 3045 | ALPHA-TERPINEOL |
| refractive index | n |
| Flash point: | 193 °F |
| storage temp. | Store below +30°C. |
| solubility | Chloroform (Sparingly), Methanol (Slightly) |
| form | Solid |
| pka | 15.09±0.29(Predicted) |
| color | Colourless to Off-White Oil to Low-Melting |
| Specific Gravity | 0.934 (20/4℃) |
| Odor | at 100.00 %. lilac floral terpenic |
| Water Solubility | 2.23g/L at 20℃ |
| BRN | 2325137 |
| CAS DataBase Reference | 10482-56-1(CAS DataBase Reference) |
| NIST Chemistry Reference | a-Terpineol(10482-56-1) |
| EPA Substance Registry System | 1-.alpha.-Terpineol (10482-56-1) |
Safety information for (-)-alpha-Terpineol
| Signal word | Danger |
| Pictogram(s) |
 Corrosion Corrosives GHS05 |
| GHS Hazard Statements |
H315:Skin corrosion/irritation H318:Serious eye damage/eye irritation |
| Precautionary Statement Codes |
P264:Wash hands thoroughly after handling. P264:Wash skin thouroughly after handling. P280:Wear protective gloves/protective clothing/eye protection/face protection. P302+P352:IF ON SKIN: wash with plenty of soap and water. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. P332+P313:IF SKIN irritation occurs: Get medical advice/attention. |
Computed Descriptors for (-)-alpha-Terpineol
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