Hexanlactone-gamma
Aroma Chemical Top Note CAS 695-06-7
A sweet creamy lactonic note with a coumarin tonka character and a soft tobacco facet. Warm and herbaceous, it adds a natural hay like sweetness to accords.
Odor profile
| Note | Top Note |
| Descriptor 1 | Fruity |
| Descriptor 2 | Coconut |
| Descriptor 3 | Herbal |
| Odor Impact1 | 120 |
| Tenacity1 | 0.64 h |
| Tenacity2 | 128 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 | 695-06-7 |
| INCI Name | Gamma-caprolactone |
| Category | Aroma Chemical |
| Formula | C6H10O2 |
| Mol. Weight | 114.14 |
| IUPAC Name | 5-ethyloxolan-2-one |
| InChIKey | JBFHTYHTHYHCDJ-UHFFFAOYSA-N |
Synonyms
Gamma-hexalactone, Hexanolide-1,4, Gamma-ethyl-gamma-butyrolactone, hexalactone, Gamma, Gamma-caprolactone, 4-ethyl-4-hydroxybutanoic Acid Lactone, Tonkalide, Hexanolide-1, gamma Hexalactone, gamma Ethyl n butyrolactone, Hexanoic acid, 4-hydroxy-, lactone, 2(3h)-Furanone, 5-Ethyldihydro, g-caprolactone, dehydrotonkalide, 4-ethyl butan-4-olide, ethyl butyrolactone, gamma-ethyl butyrolactone, 5-ethyl dihydro-2(3H)-furanone, 5-ethyl tetrahydro-2-furanone, 4-ethyl-4-butanolide, 5-ethyl-dihydro-furan-2-one, gamma-ethyl-N-butyrolactone, 4-ethylbutan-4-olide, 5-ethyldihydro-2(3H)-furanone, 5-ethyloxolan-2-one, 5-ethyltetrahydro-2-furanone, furan-2(3H)-one, 5-ethyldihydro-, furan-2(5H)-one, 3,4-dihydro-5-ethyl-, 2(3H)-furanone, 5-ethyldihydro-, gamma-hexalactone FCC, hexalactone gamma, gamma-hexalactone natural, hexan-4-olide, hexano-1,4-lactone, gamma-hexanolactone, 4-hexanolide, 4-hydroxyhexanoic acid gamma-lactone, 4-hydroxyhexanoic acid lactone
Physical and chemical data
| Boiling Point | 215.5 °C |
| Melting Point | -18.0 °C |
| Flash Point | 98.33 °C |
| Density | 1.02 |
| Refractive Index | 1.437 |
| Vapor Pressure | 0.152000 mmHg @ 25.00 C. (est) |
| LogP | 0.7 |
| Solubility | slightly |
| Appearance | Colorless liquid; [Alfa Aesar MSDS] |
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.