Cedrenol (CAS 28231-03-0) — Woody Base Note Fragrance Ingredient
Cedrenol
CAS 28231-03-0
What Is Cedrenol?
Cedrenol is a synthetic fragrance ingredient that mimics the woody character of cedar. While not naturally occurring, it’s used in many woody perfumes and household products like candles and detergents. Its importance lies in providing a stable, consistent cedar-like note without the variability of natural cedar extracts. This makes fragrances more reproducible and often more affordable.
Safety Profile
GENERALLY SAFEWhat Does Cedrenol Smell Like?
Cedrenol delivers a crisp, dry woody character reminiscent of pencil shavings and freshly cut cedar planks. It opens with a slightly camphoraceous edge that quickly settles into a clean, masculine woodiness. Unlike natural cedar oils, it lacks resinous depth but offers superior tenacity in the dry-down. The scent evolves linearly, maintaining its structural wood note without developing animalic or smoky facets.
2D Molecular Structure
SMILES: C[C@@H]1CC(O)[C@H]2C(C)(C)[C@H]3C[C@@]12CCC3=C
Chemistry, Properties & Perfumer Guide
The Chemistry
Cedrenol belongs to the sesquiterpenoid alcohol class, structurally related to cedrol but with altered functional groups. As a synthetic material, it’s typically produced through hydrogenation or oxidation of cedrene precursors. The synthesis allows control over stereochemistry, yielding a more consistent odor profile than natural cedar extracts which contain variable ratios of related compounds.
Physical & Chemical Properties
Perfumer Guide
| Application | Typical % | Range | Notes |
|---|---|---|---|
| Fine Fragrance | 1-3% | Up to 5% | Woody base note |
| Functional Products | 0.5-1% | Up to 2% | Clean woody character |
Classic Accords
Tip: Use to extend natural cedar notes while avoiding the discoloration issues of cedarwood oil.
Alternatives & Comparisons
Safety, Regulatory & Sustainability
⚠ Regulatory Disclaimer
General reference only. Consult current IFRA Standards Library before formulating.
IFRA Status
No IFRA restrictions apply.
RIFM Assessment
Not currently assessed by RIFM.
Sustainability
As a synthetic material, cedrenol avoids forestry impacts associated with natural cedar production. However, its petroleum-derived synthesis carries typical petrochemical environmental concerns. Some manufacturers are exploring bio-based routes using fermentation-derived intermediates.
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Ingredient Data Sheet
CAS 28231-03-0Physical Properties
| Molecular Weight | 220.35 g/mol🔬 PubChem |
| LogP (Octanol-Water) | 3.6🔬 PubChem |
| Boiling Point | 283 °C🔬 EPA CompTox |
| Vapor Pressure | 0.0035 mmHg @ 25°C📊 OPERA |
| Flash Point | 126.8 °C🔬 EPA CompTox |
| Involatility Index | 0.0003💻 Calculated |
| log Kp (skin permeability) | -1.488💻 Calculated |
| SMILES | CC1CCC2C13CC(C2(C)C)C(=C)C(C3)O🔬 PubChem |
Volatility & Performance
| Fragrance Note | Base💻 Calculated |
| Volatility Class | Very slow💻 Calculated |
| Persistence Score | 5.1 / 5💻 Calculated |
Odor & Flavor
| Primary Descriptors | woody• leffingwell |
| Functional Groups | alcoholalkene💻 RDKit |
| “cible with perfume oils. Used as a fixative in soaps and "heavy-duty" perfume types. The odor varies with the purity, since traces of Cedrene and other impurities heavily influence the odor picture. Generally of mild woody odor, less dry, more balsamic than the Cedrene. The tenacity is good, but the actual "odor value" is unimpressive.”📖 Arctander | |
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: DTXSID3051961
Physical Properties
| Molecular Weight | 220.356 g/mol🔬 EPA CompTox |
| Density | 0.993 g/cm^3📊 OPERA |
| Boiling Point | 287.909 °C📊 OPERA |
| Melting Point | 93.231 °C📊 OPERA |
| Flash Point | 126.354 °C📊 OPERA |
| Refractive Index | 1.528 Dimensionless📊 OPERA |
| Molar Volume | 215.606 cm^3/mol📊 OPERA |
Partition & Solubility
| LogP (Octanol-Water) | 3.866 Log10 unitless📊 OPERA |
| LogD (pH 5.5) | 3.866 Log10 unitless📊 OPERA |
| LogD (pH 7.4) | 3.866 Log10 unitless📊 OPERA |
| LogKoa (Octanol-Air) | 9.25 Log10 unitless📊 OPERA |
| Water Solubility | 0 mol/L📊 OPERA |
| Henry's Law Constant | 0 atm-m3/mole📊 OPERA |
Transport Properties
| Vapor Pressure | 0.002 mmHg📊 OPERA |
| Surface Tension | 35.301 dyn/cm📊 OPERA |
| Thermal Conductivity | 121.83 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 | 0 count💻 Computed |
| Aromatic Rings | 0 count💻 Computed |
| Molar Refractivity | 66.371 cm^3/mol📊 OPERA |
| Polarizability | 26.311 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.
