DIPOTASSIUM HYDROGEN PHOSPHATE
Prepared at the 19th JECFA (1975), published in NMRS 55B (1976) and in FNP 52 (1992). Metals and arsenic specifications revised at the 59th
JECFA (2002). A group MTDI of 70 mg/kg bw, as phosphorus from all food sources, was established at the 26th JECFA (1982)
SYNONYMS Dibasic potassium phosphate, dipotassium monophosphate, dipotassium phosphate, dipotassium acid phosphate, secondary potassium phosphate;
INS No. 340(ii)
DEFINITION
Chemical names Dipotassium hydrogenphosphate, dipotassium hydrogen orthophosphate, dipotassium hydrogen monophosphate
C.A.S. number 7758-11-4
Chemical formula K2HPO4
Formula weight 174.18
Assay Not less than 98.0% after drying
DESCRIPTION Colourless or white granular powder, crystals or masses; deliquescent
FUNCTIONAL USES Buffering agent, sequestrant, yeast food
