Sodium Hexametaphosphate And Sodium Benzoate

Sodium hexametaphosphate is a salt made from phosphoric acid, a mineral found in rocks and soil. Sodium benzoate is a salt of benzoic acid, which occurs naturally in some fruits and spices. Both are produced industrially for use in food.

Sodium hexametaphosphate acts as a sequestrant, binding metal ions to prevent spoilage and discoloration. Sodium benzoate is a preservative that inhibits the growth of mold, yeast, and bacteria. They are often used together in beverages like iced tea and syrups to improve stability and shelf life.

Both sodium hexametaphosphate and sodium benzoate are permitted food additives in the US. The FDA lists sodium hexametaphosphate as GRAS (Generally Recognized As Safe) for specific uses. Sodium benzoate is approved by the FDA as a preservative. JECFA and EFSA have evaluated both substances. While generally considered safe at typical consumption levels, some individuals may be sensitive to sodium benzoate.