Phenyl Ethyl Isobutyrate
Aroma Chemical Heart Note CAS 103-48-0
A sweet fruity floral note with a tea rose character and ripe peach facets. Honeyed and soft, it rounds rose and white floral accords with a natural fruitiness.
Odor profile
| Note | Heart Note |
| Descriptor 1 | Fruity |
| Descriptor 2 | Honey |
| Descriptor 3 | Floral |
| Odor Impact1 | 80 |
| Impact Level | Medium |
| Tenacity1 | 16 h |
| Tenacity2 | 164 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 | 103-48-0 |
| INCI Name | Phenethyl isobutyrate |
| Category | Aroma Chemical |
| Formula | C12H16O2 |
| Mol. Weight | 192.25 |
| IUPAC Name | 2-phenylethyl 2-methylpropanoate |
| InChIKey | JDQVBGQWADMTAM-UHFFFAOYSA-N |
Synonyms
2-Phenylethyl isobutyrate, 2-Phenylethyl 2-methylpropanoate, Phenyl ethyl isobutyrate DesC, benzyl carbinol isobutyrate, benzyl carbinyl 2-methyl propanoate, benzyl carbinyl isobutyrate, benzylcarbinol isobutyrate, benzylcarbinyl 2-methylpropanoate, benzylcarbinyl isobutyrate, iso butyric acid phenethyl ester, iso butyric acid phenyl ethyl ester, iso butyric acid, phenethyl ester, 2-methyl propanoic acid 2-phenethyl ester, 2-methyl propanoic acid 2-phenyl ethyl ester, phenethyl 2-methyl propanoate, phenethyl 2-methyl propionate, phenethyl 2-methylpropanoate, phenethyl 2-methylpropionate, phenethyl isobutyrate FCC (natural), phenethyl isobutyrate natural, phenethylisobutyrate, 2-phenyl ethyl 2-methyl propanoate, 2-phenyl ethyl 2-methyl propionate, 2-phenyl ethyl isobutyrate, beta-phenyl ethyl isobutyrate, phenyl ethyl isobutyrate FCC, phenyl ethyl isobutyrate natural, 2-phenylethyl 2-methylpropionate, propanoic acid, 2-methyl-, 2-phenylethyl ester
Physical and chemical data
| Boiling Point | 230.0 °C |
| Flash Point | 108.33 °C |
| Density | 0.987 |
| Refractive Index | 1.485 |
| Vapor Pressure | 0.010000 mmHg @ 25.00 C. (est) |
| LogP | 3.3 |
| Solubility | Insoluble in water; soluble in oils |
| Appearance | Colourless to slighty yellow liquid; fruity-rosy odour |
Regulatory status
Restricted components
| Component | Share |
|---|---|
| Benzaldehyde | 0.033 % |
| Linalyl Acetate | 0.003 % |
| D-Limonene | 0.001 % |
IFRA regulated substances declared for this material. For naturals — which are mixtures of many molecules — the interactive index derives the effective maximum concentration per category from them. On single molecules these shares are purity traces from the supplier specification; they are far too small to limit use and are therefore not counted.
EU allergen declaration
| Substance | Share |
|---|---|
| Benzaldehyde | 0.033 % |
| Linalyl acetate | 0.003 % |
| Limonene | 0.001 % |
Substances that must be named in the ingredient list under Annex III of Regulation (EC) 1223/2009, as amended by Regulation (EU) 2023/1545. Where a range was given, the upper bound is shown.
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.