Rhodinyl phenylacetate (CAS 10486-14-3) — Floral Heart Note Fragrance Ingredient
Rhodinyl phenylacetate
CAS 10486-14-3
What Is Rhodinyl phenylacetate?
Rhodinyl phenylacetate is a synthetic fragrance ingredient used to impart rosy, floral notes with a honey-like sweetness. It’s found in perfumes, soaps, and household products. This versatile compound enhances floral bouquets while adding subtle fruity undertones, making it popular in both fine fragrances and functional products.
Safety Profile
GENERALLY SAFEWhat Does Rhodinyl phenylacetate Smell Like?
Rhodinyl phenylacetate opens with a burst of dewy rose petals, quickly revealing a heart of honeyed sweetness reminiscent of wildflower nectar. The dry-down carries a whisper of ripe peaches and faint green stems, leaving a soft floral trail that lingers close to the skin. Imagine sunlight warming a rose garden after spring rain.
In Famous Fragrances
Fragrance associations may not reflect actual formulations.
Used as a rose enhancer that bridges natural and synthetic rose notes, adding honeyed depth without overpowering the bouquet.
2D Molecular Structure
SMILES: C[C@@H](CCCC(C)=C)CCOC(=O)CC1=CC=CC=C1
Chemistry, Properties & Perfumer Guide
The Chemistry
Rhodinyl phenylacetate is an ester formed from rhodinol and phenylacetic acid. While not found in nature, it mimics compounds found in rose and honey. The synthesis typically involves Fischer esterification under controlled conditions. The stereochemistry of the rhodinyl moiety influences its olfactory profile, with certain isomers exhibiting more pronounced floral character.
Physical & Chemical Properties
| Molecular Weight | 262.39 g/mol |
|---|---|
| Boiling Point | ~300 °C (estimated) |
Perfumer Guide
| Application | Typical % | Range | Notes |
|---|---|---|---|
| Fine Fragrance | 1-3% | 0.5-5% | Rose accord enhancer |
| Soaps | 0.5-1% | 0.2-2% | Adds floral persistence |
Classic Accords
Tip: Use with citrus top notes to prevent excessive sweetness.
Alternatives & Comparisons
When a more honey-dominant character is desired without the rosy facets of rhodinyl phenylacetate.
Safety, Regulatory & Sustainability
⚠ Regulatory Disclaimer
General reference only. Consult current IFRA Standards Library before formulating.
IFRA Status
Not restricted by IFRA. Listed as safe when used within standard fragrance guidelines.
EU Allergen Declaration
Not listed as an EU allergen.
RIFM Assessment
RIFM assessment complete – no safety concerns at current use levels.
Sustainability
As a synthetic material, rhodinyl phenylacetate reduces pressure on natural rose oil production. Modern synthesis routes aim for atom economy and reduced solvent waste. The phenylacetic acid component can be derived from renewable sources.
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References
- Fragrance Materials Association (2023). Safety Assessment of Rhodinyl Phenylacetate. FMA Report 4582
Data: PubChem (NIH), PubMed, RIFM, IFRA. Last reviewed: Apr 2026.
Report a data errorIngredient Data Sheet
CAS 10486-14-3Physical Properties
| Molecular Weight | 274.4 g/mol🔬 PubChem |
| LogP (Octanol-Water) | 5.7🔬 PubChem |
| Boiling Point | 320 °C🔬 EPA CompTox |
| Vapor Pressure | 0 mmHg @ 25°C📊 OPERA |
| Flash Point | 120 °C🔬 EPA CompTox |
| log Kp (skin permeability) | -0.327💻 Calculated |
| SMILES | CC(CCCC(=C)C)CCOC(=O)CC1=CC=CC=C1🔬 PubChem |
Volatility & Performance
| Fragrance Note | Base💻 Calculated |
| Volatility Class | Very slow💻 Calculated |
| Persistence Score | 15.1 / 5💻 Calculated |
Odor & Flavor
| Primary Descriptors | floralsweet• leffingwell |
| Functional Groups | esteretheralkenearomatic💻 RDKit |
| “Since Citronellyl phenylacetate has often been marketed under the above label (title material), it would be wise to compare the odor of the two before further experimenting. The cost difference is enormous. And the odor difference may not always be so enormous, except in cases where a true Rose absolute type base is required.”📖 Arctander | |
| Rhodinyl phenylacetate has an odor reminiscent of rose absolute with a honeylike undertone. It has a very sweet, rose-honey taste.📖 Fenaroli | |
Flavor Notes (Arctander)
| “Very sweet, Rose-honey-like taste in concentrations below 10 ppm. Traces of this ester are used in various fruit flavor compositions, imitation Honey, Peach, etc. The concentration in finished products is usually less than 10 ppm, often near 1 ppm.”📖 Arctander |
Regulatory Status
| FEMA Number | FEMA 2985⚖️ FEMA GRAS |
| GRAS Status | Generally Recognized as Safe⚖️ FEMA GRAS |
| IOFI Classification | Artificial📖 Fenaroli |
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: DTXSID90884477
Physical Properties
| Molecular Weight | 274.404 g/mol🔬 EPA CompTox |
| Density | 0.952 g/cm^3📊 OPERA |
| Boiling Point | 350.488 °C📊 OPERA |
| Melting Point | 18.184 °C📊 OPERA |
| Flash Point | 127.204 °C📊 OPERA |
| Refractive Index | 1.495 Dimensionless📊 OPERA |
| Molar Volume | 286.072 cm^3/mol📊 OPERA |
Partition & Solubility
| LogP (Octanol-Water) | 5.139 Log10 unitless📊 OPERA |
| LogD (pH 5.5) | 5.139 Log10 unitless📊 OPERA |
| LogD (pH 7.4) | 5.139 Log10 unitless📊 OPERA |
| LogKoa (Octanol-Air) | 8.97 Log10 unitless📊 OPERA |
| Water Solubility | 0 mol/L📊 OPERA |
| Henry's Law Constant | 0 atm-m3/mole📊 OPERA |
Transport Properties
| Vapor Pressure | 0 mmHg📊 OPERA |
| Viscosity | 10.993 cP📊 OPERA |
| Surface Tension | 33.695 dyn/cm📊 OPERA |
| Thermal Conductivity | 136.363 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 | 9 count💻 Computed |
| Aromatic Rings | 1 count💻 Computed |
| Molar Refractivity | 83.432 cm^3/mol📊 OPERA |
| Polarizability | 33.075 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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