Eucalyptol
Aroma Chemical Top Note CAS 470-82-6
A fresh strong eucalyptus note with a camphoraceous cooling character and a minty herbal lift. Highly diffusive, it is the classic top note for fresh and medicinal accords.
Odor profile
| Note | Top Note |
| Descriptor 1 | Herbal |
| Descriptor 2 | Camphoraceous |
| Descriptor 3 | Minty |
| Odor Impact1 | 320 |
| Tenacity1 | 0.8 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 | 470-82-6 |
| INCI Name | Eucalyptol |
| Category | Aroma Chemical |
| Formula | C10H18O |
| Mol. Weight | 154.25 |
| IUPAC Name | 1,3,3-trimethyl-2-oxabicyclo[2.2.2]octane |
| InChIKey | WEEGYLXZBRQIMU-UHFFFAOYSA-N |
Synonyms
1,8-Cineole 1,8-Oxido para menthane, 1,8-Epoxy para menthane, 1,8-Cineole, Cajeputol, 2-oxa bicyclo(2.2.2)octane, 1,3,3-trimethyl-, 2-oxa bicyclo[2.2.2]octane, p-cineole, 1,8-cineole natural, 1,8-epoxy-p-menthane, 1,8-epoxy-para-menthane, eucallyptol natural, eucalyptol (ex eucalyptus globulus), eucalyptol BP, eucalyptol codex naturel, eucalyptol FCC, eucalyptol FCC (natural), eucalyptol natural, eucalyptol natural isolate, eucalyptol USP, eucalyptol USP natural, eucalyptol USP/FCC, 2-oxa-1,3,3-trimethyl bicyclo(2.2.2)octane, 1,3,3-trimethyl oxabicyclo(2.2.2)octane, 1,3,3-trimethyl-2-oxabicyclo(2.2.2)octane, 1,3,3-trimethyl-2-oxabicyclo[2,2,2]octane, 1,3,3-trimethyl-2-oxabicyclo[2.2.2]octane, 4,7,7-trimethyl-8-oxabicyclo[2.2.2]octane, 2-oxa-1,3,3-trimethylbicyclo(2.2.2)octane, 2-oxa-1,3,3-trimethylbicyclo[2.2.2]octane, 1,3,3-trimethyloxabicyclo(2.2.2)octane
Physical and chemical data
| Boiling Point | 177.2 °C |
| Melting Point | 1.5 °C |
| Flash Point | 49.0 °C |
| Density | 0.9267 |
| Refractive Index | 1.4586 |
| Vapor Pressure | 1.9 [mmHg] |
| LogP | 2.5 |
| Solubility | In water, 3.50X10+3 mg/L at 21 °C |
| Appearance | 1,8-cineol is a colorless liquid with a camphor-like odor. Spicy cooling taste. (NTP, 1992) |
Regulatory status
Restricted components
| Component | Share |
|---|---|
| D-Limonene | 0.25 % |
IFRA regulated substances declared for this material. For naturals — which are mixtures of many molecules — the interactive index derives the effective maximum concentration per category from them. On single molecules these shares are purity traces from the supplier specification; they are far too small to limit use and are therefore not counted.
EU allergen declaration
| Substance | Share |
|---|---|
| Limonene | 0.25 % |
| alpha-Terpinene | 0.2 % |
| Pinene | 0.06 % |
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.