Alpha Pinene
Aroma Chemical Top Note CAS 80-56-8
A fresh pine note with a cool camphoraceous lift over an earthy woody base. It is the characteristic top note of coniferous and turpentine like materials.
Odor profile
| Note | Top Note |
| Descriptor 1 | Herbal |
| Descriptor 2 | Pine |
| Descriptor 3 | Camphoraceous |
| Odor Impact1 | 150 |
| Tenacity1 | 1 h |
| Tenacity2 | 4 h |
1 Source: PerfumersWorld
2 Source: The Good Scents Company
Both tenacity figures are blotter life. The two labs use different evaluation protocols, so the numbers are not directly comparable — read them as two independent readings, not as a contradiction.
Identification
| CAS Number | 80-56-8 |
| CAS 2 | 7785-70-8 |
| CAS 3 | 7785-26-4 |
| INCI Name | Pinene |
| Category | Aroma Chemical |
| Formula | C10H16 |
| Mol. Weight | 136.23 |
| IUPAC Name | 2,6,6-trimethylbicyclo[3.1.1]hept-2-ene |
| InChIKey | GRWFGVWFFZKLTI-UHFFFAOYSA-N |
Synonyms
DL- pin-2(3)-ene dextro,laevo- pin-2(3)-ene alpha- pinene pinene a- pinene alpha- pinene alpha- pinene (refined) pinene alpha pinene alpha naturel pinene alpha PF alpha- pinene alpha- pinene P & F alpha- pinene P and F alpha- pinene PF alpha- pinene, 6- trimethyl bicyclo-3, 1-2-heptene 2, 6- trimethyl bicyclo(3.1.1)hept-2-ene 4, 7- trimethyl bicyclo(3.1.1)hept-3-ene 4, 7- trimethylbicyclo[3.1.1]hept-3-ene, Alpha-Pinene, D-Alpha Pinene, D-Alpha-Pinene, L-Alpha Pinene, L-Alpha-Pinene, DL-pin-2(3)-ene, dextro,laevo-pin-2(3)-ene, .alpha.-pinene, 2-pinene, a-pinene, alpha-pinene (natural), alpha-pinene (refined) (natural), pinene alpha, pinene alpha naturel, pinene alpha PF, alpha-pinene natural, alpha-pinene P & F, alpha-pinene P and F, alpha-pinene PF, alpha-pinene, natural, 2,6,6-trimethyl bicyclo-3,1,1-2-heptene, 2,6,6-trimethyl bicyclo(3.1.1)hept-2-ene, 4,7,7-trimethyl bicyclo(3.1.1)hept-3-ene, 4,7,7-trimethylbicyclo[3.1.1]hept-3-ene, (+)-pin-2(3)-ene, (1R,5R)-(+)-pinene, (1R,5R)-(+)-alpha-pinene, (1R,5R)-2-pinene, (1R)-(+)-a-pinene, (1R)-(+)-alpha-pinene, D-(+)-alpha-pinene, dextro-alpha-pinene, alpha-pinene dextro-, (1R,5R)-2,6,6-trimethyl bicyclo(3.1.1)hept-2-ene
Physical and chemical data
| Boiling Point | 156.2 °C |
| Melting Point | -55.0 °C |
| Flash Point | 32.8 °C |
| Density | 0.858 |
| Refractive Index | 1.468 |
| Vapor Pressure | 10 mmHg at 99.1 °F (NTP, 1992) |
| LogP | 2.8 |
| Solubility | In water, 2.49 mg/L at 25 °C |
| Appearance | Alpha-pinene appears as a clear colorless liquid with a turpentine odor. Flash point 91 °F. Less dense than water and insoluble in water. Vapors are heavier than air. Used as a solvent. |
Regulatory status
EU allergen declaration
| Substance | Share |
|---|---|
| Pinene | 100 % |
Substances that must be named in the ingredient list under Annex III of Regulation (EC) 1223/2009, as amended by Regulation (EU) 2023/1545. Where a range was given, the upper bound is shown.
All figures on this page are guide values collected from public reference works and supplier declarations. They differ between batches, origins and qualities. The data sheet of your own supplier is always the authoritative document for the material you actually use.