Propionic Acid
Aroma Chemical CAS 79-09-4
A sharp acidic note with a cheesy character and a soft vinegar facet.
Odor profile
| Descriptor 1 | Acidic |
| Descriptor 2 | Pungent |
| Descriptor 3 | Cheesy |
| Impact Level | Extreme (estimated) |
| Tenacity2 | 8 h |
2 Source: The Good Scents Company
Identification
| CAS Number | 79-09-4 |
| INCI Name | Propionic acid |
| Category | Aroma Chemical |
| Formula | C3H6O2 |
| Mol. Weight | 74.08 |
| IUPAC Name | propanoic acid |
| InChIKey | XBDQKXXYIPTUBI-UHFFFAOYSA-N |
Synonyms
pseudo acetic acid; acide propanoique; acide propionique; carboxyethane; meta cetonic acid; ethane carboxylic acid; ethanecarboxylic acid; ethyl formic acid; ethylformic acid; hydroacrylic acid; 1-hydroxy-1-oxopropane; luprosil; methyl acetic acid; methylacetic acid; monoprop; propanoic acid; propanyl acid; propioic acid; N-propionic acid; nat. propionic acid; propionic acid natural; propionic acid pure; propionicacid; propionoic acid; propionsaeure; propkorn; prozoin
Physical and chemical data
| Boiling Point | 140.00 °C |
| Melting Point | -24.00 °C |
| Flash Point | 53.89 °C |
| Density | 0.99000 |
| Refractive Index | 1.38500 |
| Vapor Pressure | 4.227000 mmHg @ 25.00 C. (est) |
| LogP | 0.330 |
| Solubility | alcohol; water, 1.736e+005 mg/L @ 25 C (est); oils |
| Appearance | colorless to pale yellow clear 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.