Benzoic acid and its sodium salt Sodium benzoate are commonly used food preservatives. Under acidic conditions, the inhibitory effect on yeast and mold is strong when the pH value is 3, while the effect on many molds is very poor when the pH value is 6. Therefore, the optimal pH value for antibacterial is 2.5-4.0.

Often used as a fixative or preservative. Also used as a preservative for fruit juice beverages. It can be used as an ointment incense fragrance. It can also be used in edible flavors such as chocolate, lemons, oranges, sub-berries, nuts, and candied fruit. It is also commonly used in tobacco flavors.

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