Potassium benzoate is a preservative formed as a potassium salt of benzoic acid. Potassium benzoate is used to inhibit growth of microbes in acidic conditions, commonly soft drinks, pickles, juice, and condiments.
In a study of isolated white blood cells, potassium benzoate damaged DNA and had mutagenic and cytotoxic effects. When present with ascorbic acid, potassium benzoate may react to form benzene. See: Benzene.
Soft drinks, fruit juice, pickles, condiments, sauces, salad dressings