Calcium ferrocyanide explained

Calcium ferrocyanide is an inorganic compound with the formula Ca₂[Fe(CN)₆]. It is the Ca²⁺ salt of [Fe(CN)₆]^4-, ferrocyanide complex ion. A yellow solid, it is used as a precursor to the pigment Prussian blue.

Safety

It was listed in 2012 by the EU as a "Food Improvement Agent".

In the EU, ferrocyanides (E 535–538) were, as of 2018, solely authorised in two food categories as salt substitutes. Kidneys are the organ for ferrocyanide toxicity.^[1]

Notes and References

1. Peter Aggett, Fernando Aguilar, Riccardo Crebelli, Birgit Dusemund, Metka Filipič, Maria Jose Frutos, Pierre Galtier, David Gott, Ursula Gundert-Remy, Gunter Georg Kuhnle, Claude Lambré, Jean-Charles Leblanc, Inger Therese Lillegaard, Peter Moldeus, Alicja Mortensen, Agneta Oskarsson, Ivan Stankovic, Ine Waalkens-Berendsen, Rudolf Antonius Woutersen, Matthew Wright and Maged Younes. . Re-evaluation of sodium ferrocyanide (E 535), potassium ferrocyanide (E 536) and calcium ferrocyanide (E 538) as food additives . EFSA Journal . 2018 . 16 . 7 . 5374 . 10.2903/j.efsa.2018.5374 . 32626000 . 7009536 . free .