Potassium propionate is a colorless or white crystalline solid with the chemical formula C3H5KO2 and is easily soluble in water. It is found in nature in fermented foods, human sweat, and the digest of ruminants. The chemical properties of potassium propionate include a melting point of 157 °C, a density of 1.438 g/cm³ (at 20 °C), a boiling point of 141.7 °C, and a flash point of 57.7 °C. In industrial production, potassium propionate is usually prepared by the reaction of propionic acid with potassium hydroxide.

Uses of Potassium Propionate

1. Food preservative: Potassium propionate is an effective food preservative that is used to inhibit the growth of mold and bacteria and extend the shelf life of food. It is commonly used in dairy, baked goods, puddings, and processed cheeses.

2. Laboratory reagents: In the laboratory, potassium propionate can be used as a chemical reagent to prepare other compounds or to adjust the pH of solutions.

3. Other industrial applications: Potassium propionate may also be used in some other industrial sectors, such as pharmaceuticals, cosmetics, or certain types of plastic manufacturing, as an additive or auxiliary.