Butyl Isovalerate
Aroma Chemical Top Note CAS 109-19-3
A sweet fruity note with apple, pear and pineapple facets over a soft green base. A gentle peach nuance makes it a smooth fruity top note.
Odor profile
| Note | Top Note |
| Descriptor 1 | Fruity |
| Descriptor 2 | Apple |
| Descriptor 3 | Pear |
| Odor Impact1 | 225 |
| Impact Level | Medium |
| Tenacity1 | 0.57 h |
| Tenacity2 | 28 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 | 109-19-3 |
| INCI Name | Butyl isovalerate |
| Category | Aroma Chemical |
| Formula | C9H18O2 |
| Mol. Weight | 158.24 |
| IUPAC Name | butyl 3-methylbutanoate |
| InChIKey | AYWJSCLAAPJZEF-UHFFFAOYSA-N |
Synonyms
Butanoic acid, 3-methyl-, butyl ester, Butyl 3-methylbutanoate, butyl 3-methyl butanoate, butyl 3-methyl butyrate, N-butyl 3-methylbutanoate, butyl 3-methylbutyrate, butyl iso valerate, N-butyl iso valerate, butyl isopentanoate, N-butyl isopentanoate, 1-butyl isovalerate, N-butyl isovalerate, nat. butyl isovalerate, butyl isovalerate EEC natural, butyl isovalerate FCC, N-butyl isovalerate FCC, butyl isovalerate natural, N-butyl isovalerate natural, butyl isovalerianate, butyl-iso-valerate FCC, butylisovalerate, butyric acid, 3-methyl-, butyl ester, 3-methyl butanoic acid butyl ester, 3-methylbutanoic acid butyl ester, iso valeric acid butyl ester, iso valeric acid, butyl ester
Physical and chemical data
| Boiling Point | 174.5 °C |
| Flash Point | 53.0 °C |
| Density | 0.87 |
| Refractive Index | 1.407 |
| Vapor Pressure | 1.090000 mmHg @ 25.00 C. (est) |
| LogP | 2.6 |
| Solubility | Insol in water; sol in most organic solvents |
| Appearance | Liquid; [HSDB] Colorless pale yellow liquid with an odor of sweet apples; [MSDSonline] |
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.