StructureSodium Benzoate
CAS No. 532-32-1
EC No. 208-534-8

Sodium Benzoate

Sodium benzoate, also known as Benzoic acid sodium salt , can be made by chemically by reacting sodium hydroxide with Benzoic acid. It is odorless or with a slight smell of Benzoin, and tastes sweet astringency. Stable in air Sodium benzoate can absorb moisture in open air. As a preservative it is bacteriostatic and fungistatic under acidic conditions. As a food additive, Sodium benzoate has the E number E211.


  • Preservative in food industry
  • In acidic foods such as salad dressings (vinegar), carbonated drinks (carbonic acid), jams and fruit juices (citric acid), pickles (vinegar), and condiments
  • Preservative cosmetics
  • Preservative in Pharmaceuticals


Shelf Life

Under proper storage conditions, the shelf life is  24 months.

Health & Safety

Detailed information on the product described can be found in our relevant Health and Safety Information (Material Safety Data Sheet).