Caproic acid
Aroma Chemical Base Note CAS 142-62-1
Sour, fatty and cheesy with a sweaty, slightly fruity character. Used in tiny traces, it adds a natural, animalic realism to cheese and lavender accords.
Odor profile
| Note | Base Note |
| Descriptor 1 | Acidic |
| Descriptor 2 | Cheesy |
| Descriptor 3 | Oily |
| Odor Impact1 | 100 |
| Tenacity1 | 336 h |
| Tenacity2 | 336 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 | 142-62-1 |
| INCI Name | Caproic acid |
| Category | Aroma Chemical |
| Formula | C6H12O2 |
| Mol. Weight | 116.16 |
| IUPAC Name | hexanoic acid |
| InChIKey | FUZZWVXGSFPDMH-UHFFFAOYSA-N |
Synonyms
Hexanoic acid, butyl acetic acid, capronic acid, hexoic acid, pentane carboxylic acid, pentiformic acid, pentyl formic acid, 2-butylacetic acid, caproic (hexanoic) acid natural, caproic acid (hexanoic), natural, caproic acid (natural), caproic acid deironized, caproic acid deironized natural, caproic acid natural, caproic acid synthetic, caproic acid synthetic FCC, 1-hexanoic acid, nat. hexanoic acid, hexanoic acid (caproic acid), N hexanoic acid (caproic) natural, hexanoic acid (natural), hexanoic acid 99%, (naturals), hexanoic acid natural, 1-pentane carboxylic acid, 1-pentanecarboxylic acid
Physical and chemical data
| Boiling Point | 202.8 °C |
| Melting Point | -2.8 °C |
| Flash Point | 104.4 °C |
| Density | 0.927 |
| Refractive Index | 1.417 |
| Vapor Pressure | 0.2 mmHg at 68 °F ; 1 mmHg at 158 °F; 20 mmHg at 233.2 °F (NTP, 1992) |
| LogP | 1.9 |
| Solubility | In water, 1.03X10+4 mg/L at 25 °C |
| Appearance | Caproic acid appears as a white crystalline solid or colorless to light yellow solution with an unpleasant odor. Insoluble to slightly soluble in water and less dense than water. Contact may severely |
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.