Sodium Benzoate

Sodium benzoate is a white or colorless crystalline powder. It is a widely used food preservative, E211. It is the sodium salt of Benzoic Acid and exists in this form when dissolved in water. It is used as a preservative in personal care applications and as a corrosion inhibitor in automotive and other antifreeze products.


Molar Weight144.11 g/mol
Melting Point436.1°C
Density1.5 g/cc
FormsWhite, Granular

Uses and Applications

Key applications

  • Hair care
  • Food additive
  • Corrosion inhibitor and anti-scaling agent
  • Preservative
  • Adhesives and Sealants
  • Anti-fungal agent
  • Fragrance Ingredient
  • Cosmetic products


  • Coatings & Construction
  • Cosmetics
  • Food

Synonyms: Sodium Benzoate, Benzoate of Soda, Benzoic Acid, Sodium Salt, Sodium Benzoate, Sodium Salt of Benzoic Acid

Chemical Formula: C7H5NaO2

CAS Number: 532-32-1