Sodium Benzoate And Sulfites Added As Preservatives

Sodium benzoate is a salt of benzoic acid, a common food preservative. It is produced synthetically by reacting toluene with chlorine and then oxidizing the resulting benzotrichloride. It is often used in combination with sulfites, which are sulfur-based compounds that also act as preservatives.

Sodium benzoate and sulfites are added to foods to prevent spoilage caused by mold, yeast, and bacteria, extending shelf life. They are commonly found in baked goods like cakes and cupcakes, as well as in some beverages and processed foods.

Sodium benzoate is generally recognized as safe (GRAS) by the FDA when used as a preservative. In combination with ascorbic acid (Vitamin C), it can form small amounts of benzene, a potential carcinogen, though levels are typically very low. The WHO and JECFA have evaluated sodium benzoate and set an acceptable daily intake. Evidence on the link between sodium benzoate and hyperactivity in children is mixed, with some studies suggesting a link while others do not find significant effects.