Cedr-8-ene epoxide (CAS 13567-39-0) — Woody Middle to Base Note Fragrance Ingredient
Cedr-8-ene epoxide
CAS 13567-39-0
What Is Cedr-8-ene epoxide?
Cedr-8-ene epoxide is a synthetic fragrance compound that mimics the woody, amber-like scent of cedar. It’s found in aftershaves, woody perfumes, and home fragrances. This ingredient adds depth and longevity to fragrances, making it valuable for creating warm, resinous accords that evolve beautifully on skin.
Safety Profile
GENERALLY SAFEWhat Does Cedr-8-ene epoxide Smell Like?
Cedr-8-ene epoxide opens with a sharp, dry cedarwood character reminiscent of freshly split logs. As it evolves, it reveals a warm, ambery sweetness akin to aged whisky barrels, with subtle hints of pine sap and crushed juniper berries. The dry-down lingers as a sophisticated woody-resinous foundation that adds remarkable tenacity to fragrance compositions.
In Famous Fragrances
Fragrance associations may not reflect actual formulations.
Used to enhance the flinty mineral accord with its woody-ambergris character, creating the scent’s signature ‘wet stones after rain’ effect.
Provides the creamy sandalwood illusion through its interaction with other woody molecules, adding dimensionality to the linear composition.
2D Molecular Structure
SMILES: [H][C@]12C[C@@]34C[C@@H]([C@@]1(C)O2)C(C)(C)[C@]3([H])CC[C@H]4C
Chemistry, Properties & Perfumer Guide
The Chemistry
Cedr-8-ene epoxide is an oxygenated sesquiterpene derived from cedrene through epoxidation. The epoxide group significantly alters the molecule’s odor profile compared to its precursor, introducing greater polarity and hydrogen bonding capacity. Industrial synthesis typically involves peracid oxidation of cedrene under controlled conditions to prevent over-oxidation.
Physical & Chemical Properties
| Boiling Point | Not established |
|---|---|
| Density | Not established |
Perfumer Guide
| Application | Typical % | Range | Notes |
|---|---|---|---|
| Fine Fragrance | 1-3% | Up to 5% | Adds woody depth without overpowering |
| Home Fragrance | 2-4% | Up to 8% | Excellent for masculine candle accords |
Classic Accords
Tip: Use with ionones to create smooth woody-floral transitions.
Alternatives & Comparisons
Safety, Regulatory & Sustainability
⚠ Regulatory Disclaimer
General reference only. Consult current IFRA Standards Library before formulating.
IFRA Status
Not restricted under current IFRA standards.
EU Allergen Declaration
Not listed in EU allergen regulations.
RIFM Assessment
No significant safety concerns identified by RIFM.
Sustainability
Synthetic production avoids harvesting of endangered cedar species. Modern catalytic processes minimize waste and energy consumption compared to traditional isolation methods.
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References
- Burdock, G.A. (2010). Fenaroli’s Handbook of Flavor Ingredients. CRC Press. ISBN 9781420090860
Data: PubChem (NIH), PubMed, RIFM, IFRA. Last reviewed: Apr 2026.
Report a data errorPhysicochemical Properties
DTXSID: DTXSID1051692
Physical Properties
| Molecular Weight | 220.356 g/mol🔬 EPA CompTox |
| Density | 1.052 g/cm^3📊 OPERA |
| Boiling Point | 265.563 °C📊 OPERA |
| Melting Point | 97.495 °C📊 OPERA |
| Flash Point | 101.983 °C📊 OPERA |
| Refractive Index | 1.529 Dimensionless📊 OPERA |
| Molar Volume | 210.806 cm^3/mol📊 OPERA |
Partition & Solubility
| LogP (Octanol-Water) | 3.88 Log10 unitless📊 OPERA |
| LogD (pH 5.5) | 3.88 Log10 unitless📊 OPERA |
| LogD (pH 7.4) | 3.88 Log10 unitless📊 OPERA |
| LogKoa (Octanol-Air) | 6.9 Log10 unitless📊 OPERA |
| Water Solubility | 0 mol/L📊 OPERA |
| Henry's Law Constant | 0.001 atm-m3/mole📊 OPERA |
Transport Properties
| Vapor Pressure | 0.006 mmHg📊 OPERA |
| Surface Tension | 35.316 dyn/cm📊 OPERA |
Molecular Descriptors
| Topological Polar Surface Area | 12.53 Ų💻 Computed |
| H-Bond Donors | 0 count💻 Computed |
| H-Bond Acceptors | 1 count💻 Computed |
| Rotatable Bonds | 0 count💻 Computed |
| Aromatic Rings | 0 count💻 Computed |
| Molar Refractivity | 65.003 cm^3/mol📊 OPERA |
| Polarizability | 25.769 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.
