FERROCYANIDES of CALCIUM, POTASSIUM and SODIUM
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). An ADI of 0-0.025 mg/kg bw was established at the 18th JECFA (1974)
SYNONYMS Yellow prussiate of lime, potash or soda; hexacyanoferrate of calcium, potassium or sodium; INS No. Calcium salt 538, Potassium salt 536, Sodium salt 535
DEFINITION
Chemical names Calcium (or Potassium or Sodium) ferrocyanide,
Calcium (or Potassium or Sodium) hexacyanoferrate (II)
C.A.S. number 1327-39-5, Calcium salt
13943-58-3, Potassium salt
13601-19-9, Sodium salt
Chemical formula Ca2Fe(CN)6 · 12H2O K4Fe(CN)6 · 3H2O Na4Fe(CN)6 · 10H2O
Formula weight Calcium salt 508.3
Potassium salt 422.4
Sodium salt 484.1
Assay Not less than 99.0% of the respective ferrocyanide
DESCRIPTION Yellow crystals or crystalline powder
FUNCTIONAL USES Anticaking agent
