Sodium Benzoate & Potassium Sorbate

Sodium benzoate and potassium sorbate are salts of weak acids. Sodium benzoate is the salt of benzoic acid, and potassium sorbate is the salt of sorbic acid. Both are typically produced synthetically.

These compounds are widely used as preservatives in foods and beverages. They work by inhibiting the growth of mold, yeast, and some bacteria, which helps extend the shelf life of products. They are commonly found in acidic foods like salad dressings, carbonated drinks, jams, and pickles.

In the United States, both sodium benzoate and potassium sorbate are Generally Recognized As Safe (GRAS) by the FDA when used according to good manufacturing practices. International bodies like JECFA and EFSA have also evaluated these substances. While generally considered safe at typical consumption levels, some studies have explored potential links to hyperactivity in children, though evidence is mixed and not conclusive. Concerns have also been raised about the formation of benzene when sodium benzoate is combined with ascorbic acid (Vitamin C) under certain conditions, leading to ongoing review and reformulation efforts by manufacturers.