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Propionic acid has physical properties intermediate between those of the smaller carboxylic acids, formic and acetic acids, and the larger fatty acids. It is miscible with water, but can be removed from water by adding salt. As with acetic and formic acids, it consists of hydrogen bonded pairs of molecules in both the liquid and the vapor.
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Product Information
| CAS | 79-09-4 |
|---|---|
| Synonyms | Propanoic acid, Ethylformic acid, Methylacetic acid, Carboxyethane, Ethanecarboxylic acid, Pseudoacetic acid, Metacetonic acid |
| Assay | 99.5-100.5% |
| PubChem ID | 1032 |
| Grade | FCC Grade |
| Physical form | Liquid |
| Odor | Pungent |
| pH | 2.5 (100 g/l aq. sol) |
| Melting point | -22 °C / -7.6 °F |
| Boiling Point | 141 °C / 285.8 °F @ 760 mmHg |
| Vapor pressure | 5 mbar @ 20 °C |
| Specific gravity | 0.9930 – 0.9970 |
| Density | 0.99 |
| Solubility | Miscible |
| Auto-ignition temperature | 485 °C / 905 °F |
| Molecular formula | C3H6O2 |
| Molecular weight | 74.08 |
| Aldehydes | To Pass Test |
| Autoship Available | Yes |
| Flash Point | 51 °C / 123.8 °F |
| Heavy metals | 10 mg/kg |
| Iodide (I) | < 2.0 mg/kg |
| KosherID | DQX-FVZB |
| Readily Oxidizable Substances | To Pass Test |
| Vapor density | 2.56 |
| Viscosity | 1.02 mPa.s at 25 °C |
| Water | 0.15% |
