Tetrapotassium Pyrophosphate, Anhydrous (TKPP) Granular is a hygroscopic, white, granule. It is used for its properties as a buffering agent, dispersing agent, protein modifier, coagulant, sequestrant, and mineral supplement. Used in cleaning products and Food industry.


Molar Weight265,9 g/mol
Melting Point988 °C
Boiling Pointdecomposes
Density2.534 g/cm3
FormsViscous, Liquid (clear), Colourless

Uses and Applications

Key applications

  • Buffer agent
  • Wastewater treatment
  • Cosmetic products
  • Emulsifying agent


  • Water Treatment
  • Cosmetics
  • Food

Synonyms: Tetrapotassium Pyrophosphate, Diphosphoric Acid Tetrapotassium Salt, E 450, Tetrapotassium Pyrophosphate, Tetrapotassium Pyrophosphate Food Grade, TKPP

Chemical Formula: K4P2O7

CAS Number: 7320-34-5