Potassium Sorbate

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Detail :

• English Name -  Potassium sorbate
• CAS Number -  24634-61-5
• Molecular formula -  C₆H₇KO₂
• Molecular weight -  150.22
• EINECS number -  246-376-1
• Related Categories -  food additives; Food & Feed Additives; Classes of Metal Compounds; K (Potassium) Compounds (excluding simple potassium salts); Typical Metal Compounds;
• anticorrosive; feed additive; feed storage additive; organic metal-salt; analysis of standard products; standard products; lipid; Food additive; organic chemistry; carbohydrate; food and standard beverage
• Mol File -  24634-61-5.mol
• Melting point -  270^oC
• Density -  1,361 g/cm³
• FEMA -  2921
• Storage temp. -  2-8^oC
• Solubility H2O -  1 M at 20^oC, clear, colorless to faintly yellow
• Form -  Powder
• Color -  White to light cream
• PH -  7.8 (H2O, 20.1^oC)
• Water Solubility -  58.2 g/100 mL (20^oC)
• Merck -  14,7671
• Stability -  Stable. Incompatible with strong oxidizing agents.
• InChIKey -  CHHHXKFHOYLYRE-STWYSWDKSA-M
• CAS DataBase Reference -  24634-61-5 (CAS DataBase Reference)
• EPA Substance Registry System -  2,4-Hexadienoic acid, potassium salt, (2E,4E)-(24634-61-5)

Application field :

• Sorbic acid and its potassium salt is commonly employed as food preservative in wide range of foodstuffs, such as cheese, pickles, sauces and wines.
• Potassium sorbate is a food grade preservative generally regarded as safe (GRAS) worldwide. It is the inactive salt of sorbic acid. It readily dissolves in water where it converts to sorbic acid, its active form, at a low pH. Sorbic acid is very pH dependent. While it shows some activity up to pH 6 (about 6%), it is most active at pH 4.4 (70%). At pH 5.0 it is 37% active. As sorbic acid, it is considered to be active against mold, fair against yeast and poor against most bacteria. Sorbic acid is an unsaturated fatty acid and as such is subject to oxidation (use of an antioxidant like Mixed Tocopherols T50 is recommended). It is also sensitive to UV light and may turn yellow in solution. Gluconolactone is reported to stabilize potassium sorbate against discoloration and darkening in aqueous solutions and may be useful in stabilizing sorbic acid in the water phase of a product.
• Sorbic acid is a naturally occurring polyunsaturated fat that has antimicrobial properties. That means that it helps to prevent the growth of molds, yeasts, and fungus. Potassium sorbate is found in many food products, especially those which are meant to be stored and eaten at room temperature. This helps to ward off particles such as mold or fungus that can cause foods to spoil or make people sick. Baked goods, processed fruits and vegetables or dairy products frequently contain this product. When brewing , yeast is used to convert sugar to alcohol. This process is called fermentation. When the reaches the desired flavour and body, you want to stop the yeast from growing. Potassium sorbate is added to inhibit yeast growth.
• As mold and yeast inhibitor, like sorbic acid, especially where greater soly in water is desirable.