TRIMAGNESIUM PHOSPHATE
Prepared at the 17th JECFA (1973), published in FNP 4 (1978) and in FNP 52 (1992). Metals and arsenic specifications revised at the 57th JECFA
(2001). A group MTDI of 70 mg/kg bw, as phosphorus from all food sources, was established at the 26th JECFA (1982).
SYNONYMS Magnesium phosphate, tribasic, tertiary magnesium phosphate; INS No. 343(iii)
DEFINITION May contain 4, 5 or 8 molecules of water of hydration. The article of commerce can be specified further as to titration value.
Chemical names Trimagnesium orthophosphate
C.A.S. number 7757-87-1
Chemical formula Mg3(PO4)2 (various hydrates)
Formula weight 262.86 (anhydrous)
Assay Not less than 98% of Mg3(PO4)2 after ignition at 425o
DESCRIPTION White, odourless crystalline powder
FUNCTIONAL USES Anticaking agent
