Geranyl butyrate (CAS 106-29-6) — Sweet Top to Middle Note Fragrance Ingredient
Geranyl butyrate
CAS 106-29-6
What Is Geranyl butyrate?
Geranyl butyrate is a synthetic ester used in perfumery to add fruity, floral notes. It’s found in many consumer products like soaps and air fresheners. This ingredient matters because it provides a cost-effective way to mimic natural fruit essences while offering stability in formulations.
Safety Profile
GENERALLY SAFEWhat Does Geranyl butyrate Smell Like?
Geranyl butyrate offers a bright, fruity aroma reminiscent of fresh peaches and roses. Its top note bursts with juicy sweetness, evolving into a softer floral heart that lingers with a subtle waxy undertone. The dry-down reveals a clean, slightly green character that prevents cloying sweetness.
In Famous Fragrances
Fragrance associations may not reflect actual formulations.
Used to enhance the floral bouquet with fruity nuances, adding modernity to the classic aldehydic structure.
Provides a peachy counterpoint to the ylang-ylang and Damascus rose heart notes.
2D Molecular Structure
SMILES: CCCC(=O)OC\C=C(/C)CCC=C(C)C
Chemistry, Properties & Perfumer Guide
The Chemistry
Geranyl butyrate is an ester formed from geraniol and butyric acid. It belongs to the monoterpenoid class and is typically synthesized via Fischer esterification. The compound’s fruity character stems from its molecular structure, which mimics natural fruit esters while offering superior stability.
Physical & Chemical Properties
| Boiling Point | 253 °C |
|---|---|
| Density | 0.89 g/cm³ |
Perfumer Guide
| Application | Typical % | Range | Notes |
|---|---|---|---|
| Fine Fragrance | 1-5% | Up to 10% | Fruity-floral modifier |
| Functional Fragrance | 0.5-3% | Up to 5% | Cost-effective fruity note |
Classic Accords
Tip: Use with citrus notes to enhance freshness or with vanillin to create gourmand effects.
Alternatives & Comparisons
More floral with less fruity character, better for rose reconstructions.
Softer, more bergamot-like character suitable for cologne bases.
Safety, Regulatory & Sustainability
⚠ Regulatory Disclaimer
General reference only. Consult current IFRA Standards Library before formulating.
IFRA Status
Not restricted by IFRA.
RIFM Assessment
RIFM assessment confirms safe use at current industry levels.
Sustainability
Synthetic production avoids agricultural impacts but depends on petrochemical feedstocks. Recent advances enable bio-based routes from renewable geraniol.
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References
- Burdock, G.A. (2010). Fenaroli’s Handbook of Flavor Ingredients. CRC Press.
Data: PubChem (NIH), PubMed, RIFM, IFRA. Last reviewed: Apr 2026.
Report a data errorIngredient Data Sheet
CAS 106-29-6Physical Properties
| Molecular Weight | 224.34 g/mol🔬 PubChem |
| LogP (Octanol-Water) | 4.3🔬 PubChem |
| Boiling Point | 350 °C🔬 EPA CompTox |
| Vapor Pressure | 0.0195 mmHg @ 25°C📊 OPERA |
| Flash Point | 92.8 °C🔬 EPA CompTox |
| Involatility Index | 0.0014💻 Calculated |
| log Kp (skin permeability) | -1.015💻 Calculated |
| SMILES | CCCC(=O)OCC=C(C)CCC=C(C)C🔬 PubChem |
Volatility & Performance
| Fragrance Note | Base💻 Calculated |
| Volatility Class | Very slow💻 Calculated |
| Persistence Score | 3.9 / 5💻 Calculated |
Odor & Flavor
| Primary Descriptors | fruityrosesweet• leffingwell |
| Functional Groups | esteretheralkene💻 RDKit |
| “Sweet, rather heavy, fruity odor reminiscent of Apples, with undertones of red Roses, slightly fatty-oily, but overall very pleasant. Needless to say that traces of free acid are detrimental to this odor picture.”📖 Arctander | |
| Geranyl butyrate has a characteristic fresh, fruity, rose-like odor and sweet apricot-like taste.📖 Fenaroli | |
Flavor Notes (Arctander)
| “Soluble in alcohol, perfume and flavor oils and in mineral oil. Sweet, deep, fruity taste, remotely reminiscent of Apples, Peaches and wild Strawberries. It finds a great deal of use in flavor compositions for imitation Apple, Cherry, Peach, Pine-apple, Orange, Strawberry and various fruit complexes”📖 Arctander |
Regulatory Status
| FEMA Number | FEMA 2512⚖️ FEMA GRAS |
| GRAS Status | Generally Recognized as Safe⚖️ FEMA GRAS |
| IOFI Classification | Nature Identical📖 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: DTXSID1047152
Physical Properties
| Molecular Weight | 224.344 g/mol🔬 EPA CompTox |
| Density | 0.962 g/cm^3🔬 EPA CTX |
| Boiling Point | 316.125 °C🔬 EPA CTX |
| Melting Point | -40.827 °C📊 OPERA |
| Flash Point | 95.189 °C🔬 EPA CTX |
| Refractive Index | 1.46 Dimensionless📊 OPERA |
| Molar Volume | 249.944 cm^3/mol📊 OPERA |
Partition & Solubility
| LogP (Octanol-Water) | 4.643 Log10 unitless📊 OPERA |
| LogD (pH 5.5) | 4.643 Log10 unitless📊 OPERA |
| LogD (pH 7.4) | 4.643 Log10 unitless📊 OPERA |
| LogKoa (Octanol-Air) | 7.25 Log10 unitless📊 OPERA |
| Water Solubility | 0 mol/L📊 OPERA |
| Henry's Law Constant | 0 atm-m3/mole📊 OPERA |
Transport Properties
| Vapor Pressure | 0.008 mmHg📊 OPERA |
| Viscosity | 3.011 cP📊 OPERA |
| Surface Tension | 27.798 dyn/cm📊 OPERA |
| Thermal Conductivity | 138.481 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 | 0 count💻 Computed |
| Molar Refractivity | 68.485 cm^3/mol📊 OPERA |
| Polarizability | 27.15 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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