Ethyl linalool (CAS 10339-55-6) — Floral Top Note Fragrance Ingredient
Ethyl linalool
CAS 10339-55-6
What Is Ethyl linalool?
Ethyl linalool is a floral-scented synthetic ingredient used in perfumes and personal care products. It adds a fresh, slightly citrusy floral character to fragrances. This molecule matters because it offers perfumers a more stable alternative to natural linalool, with similar pleasant floral notes but greater longevity in formulations.
Safety Profile
GENERALLY SAFEWhat Does Ethyl linalool Smell Like?
Ethyl linalool opens with a bright, airy floralcy reminiscent of lily-of-the-valley and bergamot tea. As it evolves, the heart reveals a delicate citrus-tinged lavender character, softer and more diffusive than regular linalool. The dry-down carries a whisper of sweet woodiness, like the faint memory of a spring garden after rain. Its synthetic nature gives it a cleaner, more linear progression than natural linalool sources.
Scent Profile
In Famous Fragrances
Fragrance associations may not reflect actual formulations.
Used here to create the sparkling floralcy that defines this fragrance, blending with quince and jasmine for a dewy, youthful effect.
Provides the crisp floral lift to the citrus opening, acting as bridge between the bergamot and woody base notes.
2D Molecular Structure
SMILES: CC\C(C)=C\CCC(C)(O)C=C
Chemistry, Properties & Perfumer Guide
The Chemistry
Ethyl linalool is a monoterpenoid alcohol derivative where the hydroxyl group of linalool is replaced with an ethoxy group. This modification increases stability while maintaining similar olfactory properties. Synthesized via ethoxylation of linalool under controlled conditions, it offers perfumers a more persistent floral note than its natural counterpart. The ethyl group slightly alters the molecule’s polarity and volatility profile.
Physical & Chemical Properties
| Appearance | Colorless liquid |
|---|---|
| Odor Strength | Medium |
Perfumer Guide
| Application | Typical % | Range | Notes |
|---|---|---|---|
| Fine Fragrance | 2-5% | Up to 10% | Floral modifier |
| Soap | 0.5-2% | Up to 3% | Stable floral note |
Classic Accords
Tip: Use to extend the freshness of citrus top notes while adding floral depth.
Alternatives & Comparisons
Natural version with more complex evolution but less stability in formulations.
Safety, Regulatory & Sustainability
⚠ Regulatory Disclaimer
General reference only. IFRA, REACH, EU Cosmetics Regulation standards update periodically. Consult current IFRA Standards Library before formulating. Not legal or regulatory advice.
IFRA Status
No restrictions under current IFRA standards.
RIFM Assessment
Considered safe for current fragrance use levels by RIFM.
Sustainability
As a synthetic material, ethyl linalool offers consistent quality without natural sourcing constraints. Its production avoids seasonal variability and potential overharvesting issues associated with natural linalool sources like lavender.
Explore Ethyl linalool
Browse essential oils and aroma compounds.
Browse on iHerb →Affiliate disclosure: we may earn a small commission at no extra cost to you.
References
- Bauer et al. (2001). Common Fragrance and Flavor Materials. Wiley-VCH.
Data: PubChem (NIH), PubMed, RIFM, IFRA. Last reviewed: Mar 2026.
Report a data errorIngredient Data Sheet
CAS 10339-55-6Physical Properties
| Molecular Weight | 168.28 g/mol🔬 PubChem |
| LogP (Octanol-Water) | 3.2🔬 PubChem |
| Boiling Point | 220 °C🔬 EPA CompTox |
| Vapor Pressure | 0.135 mmHg @ 25°C📊 OPERA |
| Flash Point | 87 °C🔬 EPA CompTox |
| Involatility Index | 0.0112💻 Calculated |
| log Kp (skin permeability) | -1.455💻 Calculated |
| SMILES | CCC(=CCCC(C)(C=C)O)C🔬 PubChem |
Volatility & Performance
| Fragrance Note | Heart💻 Calculated |
| Volatility Class | Slow💻 Calculated |
| Persistence Score | 1.6 / 5💻 Calculated |
Odor & Flavor
| Primary Descriptors | floral• leffingwell |
| Functional Groups | alcoholalkene💻 RDKit |
| “3.7-Dimethyl-1,6-nonadien-3-ol, This alcohol has been suggested for use in NOTE:The name ““EthylIinalo;l - is somewhat perfume compositions as a modifier for Lina- misleading in that the material is only one Iool with certain advantages over that mare- Carbon higher homologue than Linalool. Along with Ethyl Iinalyl acetate, it forms a pleasant Bergamot-tyFe background note even in soap perfumes, a”📖 Arctander | |
Regulatory Status
| EU Annex III | Listed (restricted)⚖️ IFRA 51 |
Physical data: PubChem (NIH/NLM), U.S. EPA CompTox Dashboard, EPA OPERA models, RDKit. Odor & flavor: Arctander (Perfume & Flavor Chemicals), Fenaroli's Handbook of Flavor Ingredients, Leffingwell. Thresholds: van Gemert (Compilations of Odour Threshold Values). Regulatory: IFRA Standards 51st, FEMA GRAS. Trade names: Surburg (Common Fragrance & Flavor Materials). All data compiled and cross-referenced for perfumertools.com.
Physicochemical Properties
DTXSID: DTXSID9047415
Physical Properties
| Molecular Weight | 168.28 g/mol🔬 EPA CompTox |
| Density | 0.862 g/cm^3🔬 EPA CTX |
| Boiling Point | 226.496 °C📊 OPERA |
| Melting Point | 1.94 °C📊 OPERA |
| Flash Point | 87 °C🔬 EPA CTX |
| Refractive Index | 1.464 Dimensionless📊 OPERA |
| Molar Volume | 196.173 cm^3/mol📊 OPERA |
Partition & Solubility
| LogP (Octanol-Water) | 3.3 Log10 unitless🔬 EPA CTX |
| LogD (pH 5.5) | 3.45 Log10 unitless📊 OPERA |
| LogD (pH 7.4) | 3.45 Log10 unitless📊 OPERA |
| LogKoa (Octanol-Air) | 7.57 Log10 unitless📊 OPERA |
| Water Solubility | 0.004 mol/L🔬 EPA CTX |
| Henry's Law Constant | 0 atm-m3/mole📊 OPERA |
Transport Properties
| Vapor Pressure | 0.135 mmHg🔬 EPA CTX |
| Viscosity | 4.683 cP📊 OPERA |
| Surface Tension | 27.231 dyn/cm📊 OPERA |
| Thermal Conductivity | 136.614 mW/(m*K)📊 OPERA |
Molecular Descriptors
| Topological Polar Surface Area | 20.23 Ų💻 Computed |
| H-Bond Donors | 1 count💻 Computed |
| H-Bond Acceptors | 1 count💻 Computed |
| Rotatable Bonds | 5 count💻 Computed |
| Aromatic Rings | 0 count💻 Computed |
| Molar Refractivity | 54.137 cm^3/mol📊 OPERA |
| Polarizability | 21.462 Å^3📊 OPERA |
Data Sources:
🔬 EPA Experimental data from U.S. EPA CompTox Chemicals Dashboard & CTX APIs. 📊 OPERA Predicted using EPA's OPERA QSAR models. 💻 Computed Calculated from SMILES using RDKit.
