Potassium Bicarbonate

Potassium bicarbonate is a white, crystalline, slightly alkaline and salty substance. It is produced by the passage of carbon dioxide through an aqueous potassium carbonate solution. It is used in medicine as an antacid. It is registered in the FDA under the section of suitable, safe and effective ingredients for OTC antacids. This FDA denomination classifies potassium bicarbonate as a GRAS ingredient. Potassium hydrogencarbonate is a potassium salt that is the monopotassium salt of carbonic acid. It has fungicidal properties and is used in organic farming for the control of powdery mildew and apple scab. It has a role as a food acidity regulator, a raising agent, a buffer and an antifungal agrochemical. It is a potassium salt and an organic salt. It contains a hydrogencarbonate.


Molar Weight100.115 g/mol
Melting Point292 °C Decomposes before melting
Flash PointNon-Flammable
Density2.17 g/cc
FormsPowder (dry), White, Granular, Solid

Uses and Applications

Key applications

  • Baking
  • Food additive
  • Ceramics
  • Fertiliser
  • Agricultural
  • Pharmaceuticals
  • Detergent
  • Animal feed
  • Cosmetic products


  • Pharma
  • Food
  • Water Treatment
  • Agrobusiness
  • Chemical Processing

Synonyms: Potassium bicarbonate, Potassium hydrogen carbonatePotassium hydrogencarbonate, Potassium acid carbonate, Monopotassium carbonate, CARBONIC ACID, MONOPOTASSIUM SALT, Carbonic acid, potassium salt (1:1), Potassium bicarbonate (USP)

Chemical Formula: KHCO3

CAS Number: 298-14-6