TETRAPOTASSIUM PYROPHOSPHATE
Prepared at the 24th JECFA (1980), published in FNP 17 (1980) and in FNP 52 (1992). Metals and arsenic specifications revised at the 55th JECFA (2000). A group MTDI of 70 mg/kg bw, as phosphorus from all food sources, was established at the 26th JECFA (1982)
SYNONYMS Tetrapotassium diphosphate, potassium pyrophosphate; INS No. 450(v)
DEFINITION
Chemical names Tetrapotassium diphosphate, tetrapotassium pyrophosphate, tetrapotassium salt of diphosphoric acid
C.A.S. number 7320-34-5
Chemical formula K4P2O7
Formula weight 330.34
Assay Not less than 95% on the ignited basis
DESCRIPTION Colourless or white crystals, or a white crystalline or granular powder, powder of granular solid; hygroscopic
FUNCTIONAL USES Emulsifier, texturizer
