Tri Potassium Phosphate

Potassium Phosphate is an inorganic compound used as a laxative, dietary supplement and for electrolyte-replacement purposes. Phosphate, a predominant intracellular anion, plays an important role in energy storage, osteoblastic and osteoclastic activities, regulating serum calcium concentrations and numerous cellular phosphate-transfer reactions. Potassium phosphate increases fluidity of the intestinal contents by retention of water by osmotic forces, thereby indirectly inducing intestinal smooth muscle constriction.

Potassium phosphate, Tripotassium phosphate, Potassium phosphate tribasic, Tripotassium orthophosphate, Phosphoric acid, tripotassium salt, Potassium orthophosphate, Potassium phosphate, tribasic, Potassium phosphate, tribasic potassium phosphate
Chemical Formula
Anhydrous: K3PO4; Hydrated: K3PO4· nH2O (n = 1 or 3)
CAS Number


Molar Weight
212.27 g/mol
Melting Point
1,380 °C
Flash Point
2.564 g/cc
Liquid, Powder (dry)

Uses and Applications

Key applications

  • Buffer agent
  • Food and Nutrition
  • Nutritional supplements
  • Water treatment
  • Dietary supplements


  • Beauty & Personal Care
  • Food & Nutrition
  • Water Treatment