Gamma Octalactone
Aroma Chemical Base Note CAS 104-50-7
Sweet, creamy coconut with a milky, fatty lactonic character and a soft peach nuance. It adds a milky roundness to coconut, peach and heavy floral accords.
Odor profile
| Note | Base Note |
| Descriptor 1 | Fruity |
| Descriptor 2 | Sweet |
| Descriptor 3 | Balsamic |
| Odor Impact1 | 500 |
| Tenacity1 | 145 h |
| Tenacity2 | 144 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 | 104-50-7 |
| INCI Name | Gamma-octalactone |
| Category | Aroma Chemical |
| Formula | C8H14O2 |
| Mol. Weight | 142.20 |
| IUPAC Name | 5-butyloxolan-2-one |
| InChIKey | IPBFYZQJXZJBFQ-UHFFFAOYSA-N |
Synonyms
Hydroxyoctanoic Acid, Gamma-lactone, 4-hydroxyoctanoic acid, Gamma-lactone, Octanolide-1,4, Butyl-gamma-butyrolactone, Gamma-octalactone, Octanoic acid, 4-hydroxy-, lactone 2(3h)-Furanone, 5-Butyldihydro, 2(3h)-Furanone, 5-butyl dihydro-2(3H)-furanone, 5-butyl tetrahydro-2-furanone, 4-butyl-4-hydroxybutyric acid lactone, 4-N-butyl-4-hydroxybutyric acid lactone, 4-butyl-gamma-butyrolactone, gamma-butyl-gamma-butyrolactone, gamma-N-butyl-gamma-butyrolactone, 5-butyldihydro-2(3H)-furanone, 5-butyldihydrofuran-2(3H)-one, 5-butyloxolan-2-one, 2(3H)-furanone, 5-butyldihydro-, 2(3H)-furanone, dihydro-5-butyl-, 4-hydroxyoctanoic acid gamma-lactone, 4-hydroxyoctanoic acid lactone, gamma-octa lactone, g-octalactone, gamma-octalactone FCC, octalactone gamma, g-octalactone natural, gamma-octalactone natural, gamma-octalactone, natural, octan-4-olide, octano-1,4-lactone, octanoic acid gamma lactone, octanoic acid, 4-hydroxy-, lactone, gamma-octanolactone, 4-octanolide, gamma, Octalactone
Physical and chemical data
| Boiling Point | 234.0 °C |
| Flash Point | 110.00 °C |
| Density | 0.97 |
| Refractive Index | 1.443 |
| Vapor Pressure | 0.041000 mmHg @ 25.00 C. (est) |
| LogP | 1.6 |
| Solubility | soluble in alcohol and slightly soluble in water |
| Appearance | CBI; 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.