Butyl anthranilate (CAS 7756-96-9) — Sweet Middle Note Fragrance Ingredient
Butyl anthranilate
CAS 7756-96-9
What Is Butyl anthranilate?
Butyl anthranilate is a synthetic fragrance ingredient with a sweet, grape-like aroma. You’ll encounter it in fruity perfumes, body care products, and occasionally in food flavorings. This versatile material bridges fruity and floral accords, adding a subtle sparkle that enhances berry and tropical fruit compositions while providing excellent diffusion.
Safety Profile
GENERALLY SAFEWhat Does Butyl anthranilate Smell Like?
Butyl anthranilate bursts with an initial juicy concord grape impression, like biting into ripe purple grapes warmed by sunlight. The top note carries a faint metallic edge that quickly mellows into a candied floralcy reminiscent of orange blossom honey. As it dries, it reveals a smooth, almost creamy base with whispers of vanilla and a clean muskiness. Its moderate tenacity (4-6 hours) makes it ideal for brightening floral bouquets without overwhelming delicate notes.
In Famous Fragrances
Fragrance associations may not reflect actual formulations.
Used as a fruity-floral bridge between the ethyl maltol caramel and patchouli base, contributing to the scent’s legendary ‘dark berries’ accord.
Provides subtle grapefruit enhancement in the citrus top while supporting the apple-pear heart notes with juicy realism.
Works synergistically with vanilla and coffee notes to create a narcotic berry-like effect in the fragrance’s addictive drydown.
2D Molecular Structure
SMILES: CCCCOC(=O)C1=CC=CC=C1N
Chemistry, Properties & Perfumer Guide
The Chemistry
Butyl anthranilate is an ester formed from anthranilic acid and butanol. As a synthetic material, it’s typically produced via Fischer esterification under acidic conditions. The molecule’s planar aromatic ring contributes to its diffusion properties, while the butyl chain provides excellent solubility in both oil and alcohol bases. Unlike some fruity esters, it exhibits remarkable stability across pH ranges, making it suitable for soap and detergent applications.
Physical & Chemical Properties
| Boiling Point | ~300 °C (estimated) |
|---|---|
| Density | ~1.05 g/cm³ (estimated) |
| Vapor Pressure | Low (estimated) |
Perfumer Guide
| Application | Typical % | Range | Notes |
|---|---|---|---|
| Fine Fragrance | 0.5-2% | Up to 5% | Fruity-floral modifier |
| Soap/Detergent | 0.1-0.5% | Up to 1% | Stable in alkaline systems |
| Candles | 1-3% | Up to 4% | Good heat stability |
Classic Accords
Tip: Use at 0.2-0.8% to add naturalistic fruitiness without the harshness of cheaper berry bases.
Alternatives & Comparisons
More floral (orange blossom) with less fruity character. Higher vapor pressure makes it more volatile.
Intermediate between methyl and butyl versions. Offers better citrus compatibility for cologne types.
Safety, Regulatory & Sustainability
⚠ Regulatory Disclaimer
General reference only. Consult current IFRA Standards Library before formulating.
IFRA Status
No IFRA restrictions (as of Amendment 51). Classified as a non-regulated material.
RIFM Assessment
RIFM assessment confirms safe use at current industry levels. No significant toxicity concerns.
Sustainability
As a synthetic material, butyl anthranilate offers consistent quality without agricultural land use. Modern production methods achieve >90% atom efficiency, minimizing waste. Being petroleum-derived, its carbon footprint is offset by requiring lower usage levels than natural alternatives to achieve equivalent effects.
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References
- Burdock, G.A. (2010). Fenaroli’s Handbook of Flavor Ingredients. CRC Press. ISBN 9781420090866
Data: PubChem (NIH), PubMed, RIFM, IFRA. Last reviewed: Apr 2026.
Report a data errorPhysicochemical Properties
DTXSID: DTXSID5024683
Physical Properties
| Molecular Weight | 193.246 g/mol🔬 EPA CompTox |
| Density | 1.068 g/cm^3🔬 EPA CTX |
| Boiling Point | 255.074 °C🔬 EPA CTX |
| Melting Point | -5 °C🔬 EPA CTX |
| Flash Point | 156.533 °C🔬 EPA CTX |
| Refractive Index | 1.54 Dimensionless📊 OPERA |
| Molar Volume | 179.127 cm^3/mol📊 OPERA |
Partition & Solubility
| LogP (Octanol-Water) | 3.66 Log10 unitless🔬 EPA CTX |
| LogD (pH 5.5) | 2.892 Log10 unitless📊 OPERA |
| LogD (pH 7.4) | 2.912 Log10 unitless📊 OPERA |
| LogKoa (Octanol-Air) | 9.24 Log10 unitless📊 OPERA |
| Water Solubility | 0 mol/L🔬 EPA CTX |
| Henry's Law Constant | 0 atm-m3/mole📊 OPERA |
Transport Properties
| Vapor Pressure | 0.001 mmHg📊 OPERA |
| Viscosity | 10.866 cP📊 OPERA |
| Surface Tension | 42.482 dyn/cm📊 OPERA |
| Thermal Conductivity | 154.253 mW/(m*K)📊 OPERA |
Molecular Descriptors
| Topological Polar Surface Area | 52.32 Ų💻 Computed |
| H-Bond Donors | 1 count💻 Computed |
| H-Bond Acceptors | 3 count💻 Computed |
| Rotatable Bonds | 4 count💻 Computed |
| Aromatic Rings | 1 count💻 Computed |
| Molar Refractivity | 56.161 cm^3/mol📊 OPERA |
| Polarizability | 22.264 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.
