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Potassium sorbate-colorless to white flaky crystals or crystalline powder, odorless or slightly odorless. Unstable in air. Can be oxidized and colored. The molecular weight is 150.22. It is hygroscopic. Soluble in water and ethanol. It is mainly used as food preservative, belonging to acidic preservative. When it is used with organic acid, the antiseptic reaction effect is improved. Is prepared from potassium carbonate or potassium hydroxide and sorbic acid.
Sorbic acid (potassium) can effectively inhibit the activities of mold, yeast and aerobic bacteria, thus effectively prolonging the storage time of food and maintaining the original flavor of food. When we buy packaged (or canned) food, we often see the words "sorbic acid" or "potassium sorbate" in the item of ingredients. In fact, they are all commonly used food additives.
Sorbic acid (potassium) is an acidic preservative, which still has a good antiseptic effect in foods close to neutral (PH6.0-6.5) (not suitable for dairy products). Sorbic acid (potassium) is an efficient and safe preservative recommended by FAO and WHO, which is widely used in food, beverage, tobacco, pesticide, cosmetics and other industries. As an unsaturated acid, it can also be used in resin, perfume and rubber industries.