Which of the following preservative is used for preparation of tomato ketchup?

Sodium benzoate is the preservative is used for the preparation of tomato ketchup.
Sodium benzoate is a preservative added to packaged foods and personal care products to prolong shelf life.
It is an odourless, crystalline powder made by combining benzoic acid and sodium hydroxide. Benzoic acid is a good preservative on its own, and combining it with sodium hydroxide helps it dissolve in products.