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
Browse essential oils and aroma compounds.
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References
- PubChem: 2-Decanone PubChem
Data: PubChem (NIH), PubMed, RIFM, IFRA. Last reviewed: Apr 2026.
Report a data errorPhysicochemical 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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