Isoamyl benzoate (CAS 94-46-2) — Sweet Middle Note Fragrance Ingredient
Isoamyl benzoate
CAS 94-46-2
What Is Isoamyl benzoate?
Isoamyl benzoate is a synthetic fragrance ingredient often found in perfumes and flavored products. It contributes a sweet, fruity aroma reminiscent of bananas and berries. This ester is valued for its ability to add depth and complexity to fragrance compositions, particularly in fruity and floral accords.
Safety Profile
GENERALLY SAFEWhat Does Isoamyl benzoate Smell Like?
Isoamyl benzoate presents an intensely sweet, fruity character with strong banana and berry nuances. The top note bursts with ripe banana peel and juicy strawberry jam, settling into a heart of candied fruits with a subtle floral undertone. The dry-down reveals a soft, powdery benzoic base that lingers close to the skin. Its profile is round and full-bodied, making it excellent for creating tropical fruit illusions or enhancing floral bouquets with fruity facets.
Chemistry, Properties & Perfumer Guide
The Chemistry
Isoamyl benzoate is an ester formed from benzoic acid and isoamyl alcohol. As a synthetic material, it’s typically produced through Fischer esterification under acidic conditions. The compound belongs to the class of aromatic esters known for their sweet, fruity odors. Its molecular structure features a benzene ring esterified with a branched five-carbon alcohol chain, which contributes to its volatility and fruity character.
Physical & Chemical Properties
| Boiling Point | 262 °C |
|---|---|
| Density | 0.988 g/cm³ |
Perfumer Guide
| Application | Typical % | Range | Notes |
|---|---|---|---|
| Fine Fragrance | 1-5% | Up to 10% | Fruity modifier |
| Functional Fragrance | 0.5-2% | Up to 5% | Sweetener |
Classic Accords
Tip: Use to bridge floral heart notes with fruity top notes in tropical compositions.
Alternatives & Comparisons
Safety, Regulatory & Sustainability
⚠ Regulatory Disclaimer
General reference only. Consult current IFRA Standards Library before formulating.
IFRA Status
No IFRA restrictions apply to isoamyl benzoate.
RIFM Assessment
RIFM has evaluated isoamyl benzoate as safe for current fragrance use levels.
Sustainability
As a synthetic material, isoamyl benzoate production doesn’t rely on natural resources. Its manufacturing process is well-established with minimal environmental impact when proper controls are in place. Being petroleum-derived, it offers consistent quality and availability compared to natural alternatives.
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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 errorPerfumer’s Notes
FEMA #: 2058 | IOFI #: Nature Identical
Isoamyl benzoate has a mild, sweet, fruit-like odor.
Odor: [‘balsamic’, ‘fruity’, ‘green’, ‘sweet’, ‘waxy’]
