Isoamyl cinnamate (CAS 7779-65-9) — Sweet Heart to base Note Fragrance Ingredient
Isoamyl cinnamate
CAS 7779-65-9
What Is Isoamyl cinnamate?
Isoamyl cinnamate is a synthetic fragrance ingredient with a rich, fruity-floral aroma reminiscent of ripe bananas and tropical flowers. You’ll encounter it in high-end perfumes, scented candles, and some fruity body care products. This versatile material adds depth and warmth to fragrance compositions. Its ability to bridge fruity and floral notes makes it valuable for creating complex accords that feel both familiar and luxurious.
Safety Profile
GENERALLY SAFEWhat Does Isoamyl cinnamate Smell Like?
Isoamyl cinnamate opens with an intense burst of banana-like sweetness, quickly revealing a lush tropical character that suggests overripe pineapple and gardenia petals. The heart develops a creamy, almost rum-like richness with subtle spicy undertones. As it dries down, the material maintains its fruity core while revealing a warm, balsamic vanilla-like base. The evolution is remarkably tenacious for a fruity material, transitioning smoothly from bright top notes to a comforting, gourmand-adjacent drydown that lingers on skin for hours.
In Famous Fragrances
Fragrance associations may not reflect actual formulations.
Used to amplify the tropical nuances of the tuberose, adding a forbidden-fruit dimension that contrasts with the cooler floral aspects.
Provides the mysterious fruity undertone that blends with chocolate and dark florals to create its signature decadent effect.
Contributes to the gourmand-floral accord, helping bridge the iris and praline notes with its banana-like sweetness.
Used sparingly to enhance the jasmine sambac’s tropical facets, adding depth to the solar floral composition.
Provides a fruity counterpoint to the patchouli base, making the floral explosion more dimensional and addictive.
2D Molecular Structure
SMILES: CC(C)CCOC(=O)C=CC1=CC=CC=C1
Chemistry, Properties & Perfumer Guide
The Chemistry
Isoamyl cinnamate is an ester formed from cinnamic acid and isoamyl alcohol. As a synthetic material, it’s typically produced via Fischer esterification, where the acid and alcohol react under acidic conditions. The molecule features an aromatic phenyl group from the cinnamic portion and a branched five-carbon chain from the isoamyl component, giving it both stability and volatility. While not known to occur naturally in significant quantities, related esters are found in various tropical fruits and flowers. The ester linkage makes it relatively stable in formulations, though it can hydrolyze under strongly alkaline conditions.
Physical & Chemical Properties
| Boiling Point | ~300 °C (estimated) |
|---|---|
| Density | ~1.0 g/cm³ (estimated) |
| Refractive Index | ~1.53 (estimated) |
| Solubility | Insoluble in water, soluble in alcohol and oils |
Perfumer Guide
| Application | Typical % | Range | Notes |
|---|---|---|---|
| Fine Fragrance | 1-3% | Up to 5% | Adds tropical fruity depth |
| Candles | 2-4% | Up to 8% | Provides warm diffusion |
| Soaps | 0.5-1.5% | Up to 3% | Stable in alkaline systems |
| Body Care | 0.2-1% | Up to 2% | Adds gourmand appeal |
Classic Accords
Tip: Use with white musks to clean up any excessive sweetness while maintaining diffusion.
Alternatives & Comparisons
For a less fruity, more balsamic character with similar tenacity but less sweetness.
When a brighter, more sparkling fruity effect is needed with slightly higher volatility.
Offers a spicier profile while maintaining some of the tropical character.
Safety, Regulatory & Sustainability
⚠ Regulatory Disclaimer
General reference only. Consult current IFRA Standards Library before formulating.
IFRA Status
Not restricted under current IFRA standards (Amendment 49).
RIFM Assessment
Considered safe for use in current applications based on RIFM evaluation.
Sustainability
As a synthetic material, isoamyl cinnamate doesn’t rely on agricultural production. The petrochemical feedstocks can be replaced with bio-based alternatives as they become available. The synthesis process is relatively efficient with minimal hazardous byproducts. When compared to natural tropical fruit extracts, its consistent quality and yield make it an environmentally preferable choice in many applications.
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References
- Arctander, S. (1969). Perfume and Flavor Chemicals. Montclair, NJ.
- Bauer, K. et al. (2001). Common Fragrance and Flavor Materials. Wiley-VCH.
- Sell, C. (2006). The Chemistry of Fragrances. Royal Society of Chemistry.
Data: PubChem (NIH), PubMed, RIFM, IFRA. Last reviewed: Apr 2026.
Report a data errorPhysicochemical Properties
DTXSID: DTXSID4025454
Physical Properties
| Molecular Weight | 218.296 g/mol🔬 EPA CompTox |
| Density | 0.995 g/cm^3🔬 EPA CTX |
| Boiling Point | 295.503 °C📊 OPERA |
| Melting Point | 9.862 °C📊 OPERA |
| Flash Point | 157.649 °C📊 OPERA |
| Refractive Index | 1.531 Dimensionless📊 OPERA |
| Molar Volume | 216.802 cm^3/mol📊 OPERA |
Partition & Solubility
| LogP (Octanol-Water) | 3.998 Log10 unitless📊 OPERA |
| LogD (pH 5.5) | 3.998 Log10 unitless📊 OPERA |
| LogD (pH 7.4) | 3.998 Log10 unitless📊 OPERA |
| LogKoa (Octanol-Air) | 7.26 Log10 unitless📊 OPERA |
| Water Solubility | 0.001 mol/L📊 OPERA |
| Henry's Law Constant | 0 atm-m3/mole📊 OPERA |
Transport Properties
| Vapor Pressure | 0.003 mmHg📊 OPERA |
| Surface Tension | 35.751 dyn/cm📊 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 | 5 count💻 Computed |
| Aromatic Rings | 1 count💻 Computed |
| Molar Refractivity | 67.04 cm^3/mol📊 OPERA |
| Polarizability | 26.577 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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