DISODIUM PYROPHOSPHATE
Prepared at the 41st JECFA (1993), published in FNP 52 Add 2 (1993) superseding specifications prepared at the 37th JECFA (1990), published 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 Disodium dihydrogen diphosphate, disodium dihydrogen pyrophosphate, acid sodium pyrophosphate, INS No. 450 (i)
DEFINITION
Chemical names Disodium dihydrogen diphosphate, disodium dihydrogen pyrophosphate
C.A.S. number 7758-16-9
Chemical formula Na2H2P2O7
Formula weight 221.94
Assay Not less than 95.0%
DESCRIPTION White, crystalline powder, or granules
FUNCTIONAL USES Raising agent, buffering agent, sequestrant
