Sodium Benzoate And Sodium Bisulfite As Preservatives

Sodium benzoate is a salt of benzoic acid, a compound found naturally in some fruits and spices. It is typically manufactured synthetically from toluene. Sodium bisulfite is a salt of sulfurous acid, often produced from sulfur dioxide.

These compounds are used together as preservatives to prevent spoilage from bacteria, yeasts, and molds. They are often found in acidic foods like salad dressings, carbonated drinks, jams, and pickles.

Sodium benzoate and sodium bisulfite are approved for use in the U.S. food supply. The FDA has affirmed sodium benzoate as Generally Recognized As Safe (GRAS) for use as a preservative. Sodium bisulfite is also approved as a preservative and antioxidant. Both have been evaluated by international bodies like JECFA and EFSA. Some studies have explored potential links between sodium benzoate and hyperactivity in children, but evidence is mixed and regulatory bodies have not established a causal link at typical intake levels.