Potassium sorbate - colorless to white flake crystal or crystalline powder, odorless or slightly smelly. Unstable in air. It can be colored by oxidation. Molecular weight 150.22. It is hygroscopic. Soluble in water and ethanol. It is mainly used as a food preservative, which is an acidic preservative combined with organic acids to improve the anti-corrosion reaction effect. It is prepared with potassium carbonate or potassium hydroxide and sorbic acid as raw materials.
Sorbate (potassium) can effectively inhibit the activity of mold, yeast and aerobic bacteria, so as to effectively extend the storage time of food, and maintain the flavor of the original food. When we buy packaged (or canned) foods, we often see the words "sorbic acid" or "potassium sorbate" in an ingredient, in fact, they are commonly used food additives. Sorbate (potassium) is an acidic preservative, which still has a good preservative effect in foods that are close to neutral (PH6.0-6.5) (not applicable to dairy products). Sorbate (potassium) is an efficient and safe preservative and preservative recommended by the International Food and Agriculture Organization (FAO) and WHO, and is widely used in food, beverage, tobacco, pesticides, cosmetics and other industries. As an unsaturated acid, it can also be used in the resin, fragrance and rubber industries. 1. Potassium sorbate is an internationally recognized low toxicity, high efficiency acid preservative, and sorbate has the same preservative effect. Scope of use and dosage (in sorbate) see sorbate.
2. Used as food preservative, fruit and vegetable preservation and washing cosmetics and feed preservatives.
3. Cosmetic preservatives. It is an organic acid preservative. The addition amount is generally 0.5%. Can be mixed with sorbic acid. Although potassium sorbate is easily soluble in water and easy to use, the ph value of its 1% aqueous solution is 7 to 8, which has the tendency to increase the ph value of cosmetics, and should be paid attention to when using.
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