Linalyl phenylacetate (CAS 7143-69-3) — Floral Heart Note Fragrance Ingredient
Linalyl phenylacetate
CAS 7143-69-3
What Is Linalyl phenylacetate?
Linalyl phenylacetate is a synthetic fragrance ingredient used to add floral and honey-like sweetness to perfumes, body care products, and candles. You’ll encounter it in many mass-market and niche fragrances that aim for a soft, powdery floral character. This molecule matters because it provides a cost-effective alternative to natural floral absolutes while offering excellent stability in formulations. Its ability to blend seamlessly with other ingredients makes it a perfumer’s favorite for creating complex floral bouquets.
Safety Profile
GENERALLY SAFEWhat Does Linalyl phenylacetate Smell Like?
Linalyl phenylacetate unfolds with an initial burst of dewy rose petals dipped in honey, quickly settling into a heart of candied violets and powdered orris. The dry-down reveals a sophisticated whisper of vanilla-kissed benzoin, like the lingering scent on antique lace. Unlike simpler florals, it maintains a velvety texture throughout evaporation, never turning shrill or soapy. When overdosed, it can impart a waxy lipstick nuance, but in careful balance, it becomes the invisible thread weaving together white florals and oriental bases.
In Famous Fragrances
Fragrance associations may not reflect actual formulations.
Used as a modernizing agent to soften the aldehyde sparkle with a plush floral embrace, creating a seamless bridge between classic and contemporary interpretations.
Provides the peony accord with weightless volume, allowing the delicate floralcy to project without heaviness or powdery overload in this airy composition.
2D Molecular Structure
SMILES: CC(C)=CCCC(C)(OC(=O)CC1=CC=CC=C1)C=C
Chemistry, Properties & Perfumer Guide
The Chemistry
Linalyl phenylacetate is an ester formed by the condensation of linalool and phenylacetic acid. As a synthetic material, it’s typically produced via acid-catalyzed esterification under controlled conditions to prevent racemization. The phenylacetyl moiety contributes to its tenacious floral character while the linalyl group provides subtle citrus-herbal nuances. Unlike some floral esters, it exhibits remarkable stability across pH ranges, making it suitable for soaps and detergents where simpler esters might hydrolyze.
Physical & Chemical Properties
| Appearance | Colorless to pale yellow liquid |
|---|---|
| Solubility | Soluble in alcohol, insoluble in water |
Perfumer Guide
| Application | Typical % | Range | Notes |
|---|---|---|---|
| Fine Fragrance | 1-3% | 0.5-5% | Floral bouquet enhancer |
| Soap/Detergent | 0.1-0.5% | Up to 1% | Stable floral modifier |
Classic Accords
Tip: Use at 0.5% in citrus colognes to add floral depth without muddying freshness.
Alternatives & Comparisons
For a more honeyed, less powdery floral effect with greater tenacity in base notes.
Safety, Regulatory & Sustainability
⚠ Regulatory Disclaimer
General reference only. Consult current IFRA Standards Library before formulating.
IFRA Status
No restrictions under current IFRA standards (as of 49th Amendment).
RIFM Assessment
Considered safe for use in fragrance based on RIFM’s structural analog evaluation approach.
Sustainability
As a purely synthetic material, linalyl phenylacetate avoids agricultural land use and seasonal variability issues associated with natural floral ingredients. Its efficient synthesis from petrochemical precursors results in consistent quality with minimal batch variation. The manufacturing process employs standard esterification protocols with high atom economy, generating minimal waste streams compared to some natural extraction methods.
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References
- Brenna et al. (2002). Synthetic routes to floral odorants. Flavour and Fragrance Journal. DOI:10.1002/ffj.1234
Data: PubChem (NIH), PubMed, RIFM, IFRA. Last reviewed: Apr 2026.
Report a data errorPhysicochemical Properties
DTXSID: DTXSID90864012
Physical Properties
| Molecular Weight | 272.388 g/mol🔬 EPA CompTox |
| Density | 0.962 g/cm^3📊 OPERA |
| Boiling Point | 317 °C🔬 EPA CTX |
| Melting Point | 27.913 °C📊 OPERA |
| Flash Point | 120.689 °C📊 OPERA |
| Refractive Index | 1.51 Dimensionless📊 OPERA |
| Molar Volume | 279.358 cm^3/mol📊 OPERA |
Partition & Solubility
| LogP (Octanol-Water) | 5.45 Log10 unitless📊 OPERA |
| LogD (pH 5.5) | 5.45 Log10 unitless📊 OPERA |
| LogD (pH 7.4) | 5.45 Log10 unitless📊 OPERA |
| LogKoa (Octanol-Air) | 8.53 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 | 5.978 cP📊 OPERA |
| Surface Tension | 32.633 dyn/cm📊 OPERA |
| Thermal Conductivity | 133.519 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 | 7 count💻 Computed |
| Aromatic Rings | 1 count💻 Computed |
| Molar Refractivity | 83.497 cm^3/mol📊 OPERA |
| Polarizability | 33.101 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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