Di Potassium Phosphate

Dipotassium phosphate (K2HPO4) is a highly water-soluble salt often used as a fertilizer and food additive as a source of phosphorus and potassium as well as a buffering agent. Potassium Phosphate, Dibasic is the dipotassium form of phosphoric acid, that can be used as an electrolyte replenisher and with radio-protective activity. Upon oral administration, potassium phosphate is able to block the uptake of the radioactive isotope phosphorus P 32 (P-32).

Dipotassium hydrogen phosphate, Dipotassium hydrogenphosphate, Potassium phosphate dibasic, Potassium Hydrogen Phosphate, Dipotassium monophosphate, Potassium monohydrogen phosphate, Potassium monophosphate, Dipotassium orthophosphate
Chemical Formula
CAS Number


Molar Weight
174.176 g/mol
Melting Point
> 465 °C decomposes
2.44 g/cc
Liquid, Powder (dry), White

Uses and Applications

Key applications

  • Buffer agent
  • Wastewater treatment
  • Anti-freeze
  • Water treatment
  • Ceramics
  • Pulp and paper
  • Paint and Coatings


  • Pulp & Paper
  • CASE & Construction
  • Water Treatment
  • Agriculture
  • Chemical Processing