2-Decanone (CAS 693-54-9) — Sweet Top Note Fragrance Ingredient
2-Decanone
CAS 693-54-9
What Is 2-Decanone?
2-Decanone is a synthetic ketone used in perfumery for its fresh, waxy, and slightly fruity aroma. It’s often found in cleaning products and industrial fragrances. This ingredient matters because it provides a clean, slightly floral note that blends well with other components, making it versatile in modern fragrance formulations.
Safety Profile
GENERALLY SAFEWhat Does 2-Decanone Smell Like?
2-Decanone offers a fresh, waxy aroma with subtle fruity undertones. It evolves from a bright, clean top note to a softer, slightly floral heart. The dry-down is smooth and slightly creamy, making it a versatile choice for modern fragrances.
2D Molecular Structure
SMILES: CCCCCCCCC(C)=O
Chemistry, Properties & Perfumer Guide
The Chemistry
2-Decanone is a ketone with a ten-carbon chain. It is synthetically produced and used primarily in industrial and cleaning product fragrances. Its structure allows for a clean, slightly floral aroma, making it a versatile component in modern perfumery.
Physical & Chemical Properties
| Boiling Point | 198 °C |
|---|---|
| Density | 0.865 g/cm³ |
Perfumer Guide
| Application | Typical % | Range | Notes |
|---|---|---|---|
| Fine Fragrance | 1-3% | Up to 5% | Used as a modifier |
| Cleaning Products | 5-10% | Up to 15% | Provides fresh, clean note |
Classic Accords
Tip: Use sparingly to avoid overpowering other notes.
Alternatives & Comparisons
Safety, Regulatory & Sustainability
⚠ Regulatory Disclaimer
General reference only. Consult current IFRA Standards Library before formulating.
IFRA Status
No restrictions under IFRA standards.
RIFM Assessment
RIFM assessment confirms safety at current usage levels.
Sustainability
2-Decanone is synthetically produced, ensuring consistent quality and supply. Its production has minimal environmental impact compared to natural alternatives.
Explore 2-Decanone
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References
- PubChem: 2-Decanone PubChem
Data: PubChem (NIH), PubMed, RIFM, IFRA. Last reviewed: Apr 2026.
Report a data errorIngredient Data Sheet
CAS 693-54-9Physical Properties
| Molecular Weight | 156.26 g/mol🔬 PubChem |
| LogP (Octanol-Water) | 3.7🔬 PubChem |
| Boiling Point | 210 °C🔬 EPA CompTox |
| Vapor Pressure | 0.2688 mmHg @ 25°C📊 OPERA |
| Flash Point | 71 °C🔬 EPA CompTox |
| Involatility Index | 0.0232💻 Calculated |
| log Kp (skin permeability) | -1.026💻 Calculated |
| SMILES | CCCCCCCCC(=O)C🔬 PubChem |
Volatility & Performance
| Fragrance Note | Heart💻 Calculated |
| Volatility Class | Slow💻 Calculated |
| Persistence Score | 1.1 / 5💻 Calculated |
Odor & Flavor
| Primary Descriptors | floralorange• leffingwell |
| Functional Groups | ketone💻 RDKit |
| “Powerful, citrusy-Orange-like, peculiar floral type odor of moderate to poor tenacity.”📖 Arctander | |
Flavor Notes (Arctander)
| “It finds also limited application in flavors, particularly in imitation Coconut and Banana,”📖 Arctander |
Sensory Thresholds
| Odor Detection Threshold | 0.0232 ppm (n=5)📖 van Gemert |
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: DTXSID9022104
Physical Properties
| Molecular Weight | 156.269 g/mol🔬 EPA CompTox |
| Density | 0.823 g/cm^3🔬 EPA CTX |
| Boiling Point | 210.333 °C🔬 EPA CTX |
| Melting Point | 7.05 °C🔬 EPA CTX |
| Flash Point | 74.538 °C🔬 EPA CTX |
| Refractive Index | 1.421 Dimensionless📊 OPERA |
| Molar Volume | 190.723 cm^3/mol📊 OPERA |
Partition & Solubility
| LogP (Octanol-Water) | 3.73 Log10 unitless🔬 EPA CTX |
| LogD (pH 5.5) | 3.683 Log10 unitless📊 OPERA |
| LogD (pH 7.4) | 3.683 Log10 unitless📊 OPERA |
| LogKoa (Octanol-Air) | 5.08 Log10 unitless📊 OPERA |
| Water Solubility | 0 mol/L🔬 EPA CTX |
| Henry's Law Constant | 0.001 atm-m3/mole🔬 EPA CTX |
Transport Properties
| Vapor Pressure | 0.269 mmHg🔬 EPA CTX |
| Viscosity | 1.351 cP📊 OPERA |
| Surface Tension | 27.016 dyn/cm📊 OPERA |
| Thermal Conductivity | 139.465 mW/(m*K)📊 OPERA |
Molecular Descriptors
| Topological Polar Surface Area | 17.07 Ų💻 Computed |
| H-Bond Donors | 0 count💻 Computed |
| H-Bond Acceptors | 1 count💻 Computed |
| Rotatable Bonds | 7 count💻 Computed |
| Aromatic Rings | 0 count💻 Computed |
| Molar Refractivity | 48.407 cm^3/mol📊 OPERA |
| Polarizability | 19.19 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.
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