Sodium benzoate is a widely used preservative in food and beverages. As the sodium salt of benzoic acid, this compound effectively inhibits the growth of bacteria, fungi, and yeasts, particularly in acidic environments (with a pH of 4.5 and below).
Sodium benzoate is commonly found in products such as soft drinks, fruit juices, pickles, and candies. It is generally considered safe; however, high concentrations or prolonged exposure may cause allergic reactions or sensitivities in some individuals. Beyond food applications, sodium benzoate is also utilized in cosmetics and pharmaceuticals.