Isoamyl Butyrate
Aroma Chemical Top Note CAS 106-27-4
Fresh, fruity banana and apricot with a green, sweet character and a soft pear nuance. Diffusive, it boosts and lifts fruity top notes.
Odor profile
| Note | Top Note |
| Descriptor 1 | Fruity |
| Descriptor 2 | Sweet |
| Descriptor 3 | Banana |
| Odor Impact1 | 280 |
| Impact Level | Medium |
| Tenacity1 | 0.5 h |
| Tenacity2 | 2 h |
1 Source: PerfumersWorld
2 Source: The Good Scents Company
Both tenacity figures are blotter life. The two labs use different evaluation protocols, so the numbers are not directly comparable — read them as two independent readings, not as a contradiction.
Identification
| CAS Number | 106-27-4 |
| INCI Name | Isoamyl butyrate |
| Category | Aroma Chemical |
| Formula | C9H18O2 |
| Mol. Weight | 158.24 |
| IUPAC Name | 3-methylbutyl butanoate |
| InChIKey | PQLMXFQTAMDXIZ-UHFFFAOYSA-N |
Synonyms
Amyl Iso Butanoate, Amyl Iso Butyrate, 3-methyl Butanoate, isoamyl Butanoate, Isopentyl Butyrate, Butanoic acid, 3-methylbutyl ester, iso amyl butanoate, iso-amyl butyrate, nat.iso amyl butyrate, iso amyl butyrate (double isomer), iso amyl butyrate (natural), iso amyl butyrate (single isomer), iso amyl butyrate 35i/65N, iso amyl butyrate 98% (singe isomer), iso amyl butyrate FCC, iso amyl butyrate FCC (natural), iso amyl butyrate nat., iso amyl butyrate natural, iso amyl butyrate, natural, iso amyl N-butyrate, iso-amyl-butyrate FCC, iso amyl-N-butyrate, iso amylbutyrate, butanoic acid 3-methyl butyl ester, butanoic acid 3-methylbutyl ester, butyric acid isoamyl ester, butyric acid isoamylester, butyric acid isopentyl ester, butyric acid, isopentyl ester, 3-methyl butyl butanoate, 3-methyl butyl butyrate, 3-methylbutyl butanoate, 3-methylbutyl butyrate, iso pentyl alcohol butyrate, iso pentyl alcohol, iso pentyl butanoate, iso pentyl butyrate, butyrate
Physical and chemical data
| Boiling Point | 179.0 °C |
| Melting Point | -73.2 °C |
| Flash Point | 57.22 °C |
| Density | 0.861 |
| Refractive Index | 1.409 |
| Vapor Pressure | 0.950000 mmHg @ 20.00 C. |
| LogP | 2.6 |
| Solubility | Soluble in ethanol and most fixed oils, insoluble in glycerol, propylene glycol and water |
| Appearance | Liquid |
All figures on this page are guide values collected from public reference works and supplier declarations. They differ between batches, origins and qualities. The data sheet of your own supplier is always the authoritative document for the material you actually use.