alpha-Amyl cinnamic aldehyde diethyl acetal (CAS 60763-41-9) — Sweet Middle Note Fragrance Ingredient
alpha-Amyl cinnamic aldehyde diethyl acetal
CAS 60763-41-9
What Is alpha-Amyl cinnamic aldehyde diethyl acetal?
Alpha-Amyl cinnamic aldehyde diethyl acetal is a synthetic fragrance ingredient used to add warm, powdery floral notes with a balsamic undertone. It’s commonly found in soaps, detergents, and fine fragrances. This versatile molecule bridges fruity and floral accords, often enhancing longevity in fragrance compositions.
Safety Profile
GENERALLY SAFEWhat Does alpha-Amyl cinnamic aldehyde diethyl acetal Smell Like?
Opens with a warm, powdery almond-like sweetness reminiscent of heliotrope, evolving into a smooth floral heart with subtle jasmine undertones. The dry-down reveals a lingering balsamic warmth that adds sophistication to oriental compositions. Exceptionally stable, it acts as a bridge between top and base notes with remarkable tenacity.
In Famous Fragrances
Fragrance associations may not reflect actual formulations.
Used to enhance the powdery floral bouquet, adding warmth and longevity to the iconic aldehydic structure.
Contributes to the oriental vanilla base with its balsamic sweetness, creating depth without overwhelming the citrus top.
2D Molecular Structure
SMILES: CCCCCC(=CC1=CC=CC=C1)C(OCC)OCC
Chemistry, Properties & Perfumer Guide
The Chemistry
A synthetic aromatic compound belonging to the acetal class, created through the reaction of alpha-amyl cinnamic aldehyde with ethanol. Its molecular structure features a diethyl acetal group that enhances stability and modulates volatility. The compound’s chiral center influences its olfactory profile, with the (R)-enantiomer being more potent.
Physical & Chemical Properties
| Boiling Point | Not available |
|---|---|
| Density | Not available |
Perfumer Guide
| Application | Typical % | Range | Notes |
|---|---|---|---|
| Fine Fragrance | 1-5% | Up to 10% | Adds warmth to floral bouquets |
| Soaps | 0.5-2% | Up to 3% | Enhances powder notes |
| Detergents | 0.1-0.5% | Up to 1% | Boosts floral character |
Classic Accords
Tip: Use with ionones to create sophisticated powder effects.
Alternatives & Comparisons
When a more pronounced powdery floral character is desired without balsamic undertones.
For similar floral enhancement with better solubility in alcohol bases.
Safety, Regulatory & Sustainability
⚠ Regulatory Disclaimer
General reference only. Consult current IFRA Standards Library before formulating.
IFRA Status
No IFRA restrictions currently apply.
RIFM Assessment
RIFM has conducted safety assessments confirming safe use at reported levels.
Sustainability
Synthesized from petrochemical precursors with established industrial processes. Energy efficient production compared to some natural alternatives. No known ecological toxicity concerns at usage levels.
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References
- Brenna, E. et al. (2002). Chiral recognition in the odor sensing of heliotropin derivatives. Chirality. PMID 12112322
- Arctander, S. (1969). Perfume and Flavor Chemicals. Montclair.
Data: PubChem (NIH), PubMed, RIFM, IFRA. Last reviewed: Apr 2026.
Report a data errorIngredient Data Sheet
CAS 60763-41-9Physical Properties
| Molecular Weight | 276.4 g/mol🔬 PubChem |
| LogP (Octanol-Water) | 5.6🔬 PubChem |
| Boiling Point | 313 °C🔬 EPA CompTox |
| Vapor Pressure | 0.0001 mmHg @ 25°C📊 OPERA |
| Flash Point | 73.5 °C🔬 EPA CompTox |
| log Kp (skin permeability) | -0.41💻 Calculated |
| SMILES | CCCCCC(=CC1=CC=CC=C1)C(OCC)OCC🔬 PubChem |
Volatility & Performance
| Fragrance Note | Base💻 Calculated |
| Volatility Class | Very slow💻 Calculated |
| Persistence Score | 11.5 / 5💻 Calculated |
Odor & Flavor
| Primary Descriptors | floralgreenjasmineleafy• leffingwell |
| Functional Groups | etheralkenearomatic💻 RDKit |
| “Faintly oily, green-leafy and simultaneously ~H=C-CH(O~Hb)2 floral odor, reminiscent of the herbal-floral / part of Jasmirt.”📖 Arctander | |
Regulatory Status
| IFRA Listed | Yes — see IFRA Standards for category limits⚖️ IFRA 51 |
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: DTXSID9069429
Physical Properties
| Molecular Weight | 276.42 g/mol🔬 EPA CompTox |
| Density | 0.935 g/cm^3🔬 EPA CTX |
| Boiling Point | 313 °C🔬 EPA CTX |
| Melting Point | 26.818 °C📊 OPERA |
| Flash Point | 73.5 °C🔬 EPA CTX |
| Refractive Index | 1.509 Dimensionless📊 OPERA |
| Molar Volume | 291.873 cm^3/mol📊 OPERA |
Partition & Solubility
| LogP (Octanol-Water) | 6 Log10 unitless🔬 EPA CTX |
| LogD (pH 5.5) | 4.762 Log10 unitless📊 OPERA |
| LogD (pH 7.4) | 4.762 Log10 unitless📊 OPERA |
| LogKoa (Octanol-Air) | 8.86 Log10 unitless📊 OPERA |
| Water Solubility | 0 mol/L🔬 EPA CTX |
| Henry's Law Constant | 0 atm-m3/mole📊 OPERA |
Transport Properties
| Vapor Pressure | 0 mmHg🔬 EPA CTX |
| Viscosity | 10.068 cP📊 OPERA |
| Surface Tension | 34.356 dyn/cm📊 OPERA |
Molecular Descriptors
| Topological Polar Surface Area | 18.46 Ų💻 Computed |
| H-Bond Donors | 0 count💻 Computed |
| H-Bond Acceptors | 2 count💻 Computed |
| Rotatable Bonds | 10 count💻 Computed |
| Aromatic Rings | 1 count💻 Computed |
| Molar Refractivity | 87.13 cm^3/mol📊 OPERA |
| Polarizability | 34.541 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.
