Decahydro-beta-naphthyl formate (CAS 10519-12-7) — Woody Base Note Fragrance Ingredient
Decahydro-beta-naphthyl formate
CAS 10519-12-7
What Is Decahydro-beta-naphthyl formate?
Decahydro-beta-naphthyl formate is a synthetic fragrance ingredient used in perfumery to add woody, amber-like nuances. It’s found in niche fragrances and some personal care products. This molecule matters because it contributes to long-lasting base notes, helping anchor lighter components while adding subtle complexity to modern amber accords.
Safety Profile
GENERALLY SAFEWhat Does Decahydro-beta-naphthyl formate Smell Like?
Decahydro-beta-naphthyl formate unfolds with a dry, woody character reminiscent of aged cedar chests, evolving into a smooth amber-woody heart with faintly sweet undertones. The dry-down reveals a persistent, slightly musky base note that blends seamlessly with patchouli and vanilla. Imagine the scent of antique wooden furniture polished with beeswax, softened by time and subtle resinous whispers.
2D Molecular Structure
SMILES: O=COC1CCC2CCCCC2C1
Chemistry, Properties & Perfumer Guide
The Chemistry
Decahydro-beta-naphthyl formate is a synthetic ester derived from hydrogenated naphthalene structures. The molecule features a fully saturated bicyclic system esterified with formic acid, creating enhanced stability and longevity. Industrial synthesis typically involves catalytic hydrogenation of beta-naphthol derivatives followed by esterification. The saturated structure eliminates aromatic character while preserving woody olfactive properties.
Physical & Chemical Properties
| Appearance | Colorless to pale yellow liquid |
|---|---|
| Solubility | Soluble in alcohol and oils |
Perfumer Guide
| Application | Typical % | Range | Notes |
|---|---|---|---|
| Fine Fragrance | 0.5-2% | Up to 5% | Base note fixative |
| Soap | 0.1-0.5% | Up to 1% | Stable in alkaline systems |
Classic Accords
Tip: Use as a bridge between woody and amber materials to enhance diffusion without overpowering.
Alternatives & Comparisons
Safety, Regulatory & Sustainability
⚠ Regulatory Disclaimer
General reference only. Consult current IFRA Standards Library before formulating.
IFRA Status
Not currently restricted by IFRA standards.
RIFM Assessment
Limited safety assessment available through RIFM databases.
Sustainability
As a fully synthetic material, decahydro-beta-naphthyl formate avoids natural resource depletion concerns. Production typically uses petrochemical feedstocks, though modern synthesis routes aim for atom efficiency. The material’s longevity in fragrance reduces reapplication frequency compared to more volatile naturals.
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Ingredient Data Sheet
CAS 10519-12-7Physical Properties
| Molecular Weight | 182.26 g/mol🔬 PubChem |
| LogP (Octanol-Water) | 3.5🔬 PubChem |
| Boiling Point | 230 °C🔬 EPA CompTox |
| Vapor Pressure | 0.0107 mmHg @ 25°C📊 OPERA |
| Flash Point | 99.5 °C🔬 EPA CompTox |
| Involatility Index | 0.0009💻 Calculated |
| log Kp (skin permeability) | -1.327💻 Calculated |
| SMILES | C1CCC2CC(CCC2C1)OC=O🔬 PubChem |
Volatility & Performance
| Fragrance Note | Heart💻 Calculated |
| Volatility Class | Very slow💻 Calculated |
| Persistence Score | 3.8 / 5💻 Calculated |
Odor & Flavor
| Functional Groups | ether💻 RDKit |
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: DTXSID00864285
Physical Properties
| Molecular Weight | 182.263 g/mol🔬 EPA CompTox |
| Density | 0.987 g/cm^3📊 OPERA |
| Boiling Point | 243.947 °C📊 OPERA |
| Melting Point | 8.858 °C📊 OPERA |
| Flash Point | 99.325 °C📊 OPERA |
| Refractive Index | 1.483 Dimensionless📊 OPERA |
| Molar Volume | 178.276 cm^3/mol📊 OPERA |
Partition & Solubility
| LogP (Octanol-Water) | 3.059 Log10 unitless📊 OPERA |
| LogD (pH 5.5) | 3.059 Log10 unitless📊 OPERA |
| LogD (pH 7.4) | 3.059 Log10 unitless📊 OPERA |
| LogKoa (Octanol-Air) | 5.78 Log10 unitless📊 OPERA |
| Water Solubility | 0.001 mol/L📊 OPERA |
| Henry's Law Constant | 0 atm-m3/mole📊 OPERA |
Transport Properties
| Vapor Pressure | 0.361 mmHg📊 OPERA |
| Viscosity | 8.624 cP📊 OPERA |
| Surface Tension | 35.692 dyn/cm📊 OPERA |
| Thermal Conductivity | 128.836 mW/(m*K)📊 OPERA |
Molecular Descriptors
| Topological Polar Surface Area | 26.3 Ų💻 Computed |
| H-Bond Donors | 0 count💻 Computed |
| H-Bond Acceptors | 2 count💻 Computed |
| Rotatable Bonds | 2 count💻 Computed |
| Aromatic Rings | 0 count💻 Computed |
| Molar Refractivity | 50.91 cm^3/mol📊 OPERA |
| Polarizability | 20.182 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.
