Tetrapotassium pyrophosphate

Tetrapotassium pyrophosphate (CAS 7320-34-5), abbreviated TKPP and listed as E450(v) in food applications, is an inorganic potassium salt used in industrial and food-grade processes.

Where is Tetrapotassium pyrophosphate used?

• Food processing: emulsifying salt and moisture-retention agent in processed cheese, seafood and cured meat
• Industrial cleaning and textile processing: sequesters calcium and magnesium ions in hard water, improving detergent efficiency and dye uptake uniformity
• Water treatment: prevents scale formation and controls corrosion by binding interfering metal ions
• Building and construction: dispersant in cementitious and ceramic systems, improving workability and pigment distribution
• It functions as a chelating agent, buffering agent and dispersant.

Commercial specifications

• Food-grade to FCC and E450(v) specifications; technical grade for industrial use
• Commercial concentrations typically ≥95% or ≥98% purity depending on grade