Product Overview
Propionic Acid, also known as Propanoic Acid, is a naturally occurring short-chain carboxylic acid with the molecular formula C3H6O2 and a molecular weight of 74.08 g/mol. Its CAS number is 79-09-4. It is a saturated organic acid containing three carbon atoms and is commonly supplied as a colorless, oily liquid with a characteristic sharp, pungent, and slightly rancid odor. It is completely miscible with water and has a boiling point of approximately 141°C.
Propionic Acid is an important industrial raw material with applications across food processing, agriculture, animal nutrition, and chemical manufacturing. It is widely recognized for its ability to inhibit mold growth and is used in the production of propionate salts, esters, and other chemical derivatives. In animal feed applications, it can help control mold development and support feed preservation when used according to applicable regulations. It also serves as an intermediate in the manufacture of pharmaceuticals, agricultural chemicals, and specialty chemical products.
Commercial Propionic Acid is available in different purity grades and concentrations. Product specifications, including purity, moisture content, and packaging, should be confirmed according to the intended application and supplier documentation.
| Propionic acid Chemical Properties |
| Melting point | −24-−23 °C(lit.) |
| Boiling point | 141 °C(lit.) |
| density | 0.993 g/mL at 25 °C(lit.) |
| vapor density | 2.55 (vs air) |
| vapor pressure | 2.4 mm Hg ( 20 °C) |
| refractive index | n |
| FEMA | 2924 | PROPIONIC ACID |
| Fp | 125 °F |
| storage temp. | Store below +30°C. |
| solubility | organic solvents: soluble(lit.) |
| pka | 4.86(at 25℃) |
| form | Liquid |
| Specific Gravity | 0.996 (20/4℃) |
| color | ≤10, APHA: |
| PH | 3.96(1 mM solution);3.44(10 mM solution);2.94(100 mM solution); |
| Odor | at 0.10 % in propylene glycol. pungent acidic cheesy vinegar |
| Odor Type | acidic |
| Odor Threshold | 0.0057ppm |
| biological source | synthetic |
| explosive limit | 2.1-12%(V) |
| Water Solubility | 37 g/100 mL |
| Thermal Conductivity | 0.142 W/(m·K) at 25 ℃ |
| JECFA Number | 84 |
| Merck | 14,7825 |
| BRN | 506071 |
