Aldehyde C-7
Aroma Chemical Top Note CAS 111-71-7
Fresh, fatty aldehydic with a green, herbal character and a soft ozone, marine lift. Used in traces, it adds a clean aldehydic sparkle to marine and floral accords.
Odor profile
| Note | Top Note |
| Descriptor 1 | Aldehydic |
| Descriptor 2 | Fresh |
| Descriptor 3 | Green |
| Odor Impact1 | 700 |
| Tenacity1 | 1.8 h |
| Tenacity2 | 12 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 | 111-71-7 |
| INCI Name | Heptanal |
| Category | Aroma Chemical |
| Formula | C7H14O |
| Mol. Weight | 114.19 |
| IUPAC Name | heptanal |
| InChIKey | FXHGMKSSBGDXIY-UHFFFAOYSA-N |
Synonyms
Heptanal, aldehyde C-7 FCC, aldehyde C7, aldehyde C7 naturel, enanthal, enanthaldehyde, enanthic aldehyde, enanthole, heptaldehyde, N-heptaldehyde, 1-heptanal, 1 heptanal, N-heptanal, heptanal (aldehyde C-7), heptanal natural, heptanaldehyde, heptanoic aldehyde, heptyl aldehyde, N-heptyl aldehyde, heptylaldehyde, N-heptylaldehyde, oenanthal, oenanthaldehyde, oenanthic aldehyde, oenanthol
Physical and chemical data
| Boiling Point | 152.8 °C |
| Melting Point | -42.8 °C |
| Flash Point | 35.0 °C |
| Density | 0.8495 |
| Refractive Index | 1.4113 |
| Vapor Pressure | 3 mmHg at 77 °F ; 5 mmHg at 90.9 °F (NTP, 1992) |
| LogP | 2.3 |
| Solubility | In water, 1,250 mg/L at 25 °C |
| Appearance | N-heptaldehyde appears as a colorless, oily liquid with a penetrating fruity odor. Insoluble in water and less dense than water. Hence floats on water. Used to make perfumes and pharmaceuticals. |
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.