Tetrapotassium Pyrophosphate (TKPP, K₄P₂O₇) is a high-purity water-soluble potassium phosphate with content ≥98% and pH (1% solution) of 10.0–11.0; agricultural grade offers P₂O₅ ≥42% and K₂O ≥56%. Valued for its chelating, buffering and emulsifying functions and excellent solubility, it is used as a functional phosphate in food processing and industrial formulations as well as a readily soluble K–P source in specialty fertilizers and nutrient blends.
