Sodium Carbonate

Its largest applications are in the manufacture of glass, paper, rayon, soaps and detergents. As a food additive, it is used as an acidity regulator, anti-caking agent, raising agent and stabiliser. As a medicine, because it neutralises gastric acid, it acts an antacid.

Soda ash, Soda crystals, Washing soda, calcined soda, E500
Chemical Formula
Na2CO3; Na₂CO3.10H2O
CAS Number
491-19-8 (anhydrous)


Molar Weight
105.988 g/mol (anhydrous); 285.99 g/mol (decahydrate)
Melting Point
851 °C
2.54 g/cm³
Crystals, White

Uses and Applications

Key applications

  • Food packaging
  • Cleaning products
  • Pulp and paper
  • Solvents
  • Personal care
  • Bleaching agent
  • Paint and Coatings


  • Pharma
  • Energy Services
  • Cleaning
  • CASE & Construction
  • Polymers
  • Beauty & Personal Care
  • Water Treatment
  • Food & Nutrition
  • Animal Nutrition
  • Agriculture
  • Lubricants
  • Rubber