Chemistry:Calcium ferrocyanide

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Short description: Chemical compound
Calcium ferrocyanide
Names
Other names
  • Dicalcium hexakis(cyano-κC)ferrate(4-)
Identifiers
3D model (JSmol)
ChemSpider
EC Number
  • 237-508-9
UNII
Properties
C6Ca2FeN6
Molar mass 292.109 g·mol−1
Hazards
GHS pictograms GHS07: Harmful
GHS Signal word Warning
H302, H312, H315, H319, H332, H335
P261, P280, P301+312, P302+352, P304+340, P305+351+338, P332+313
NFPA 704 (fire diamond)
NFPA 704 four-colored diamondFlammability code 0: Will not burn. E.g. waterHealth (blue): no hazard codeReactivity code 0: Normally stable, even under fire exposure conditions, and is not reactive with water. E.g. liquid nitrogenSpecial hazards (white): no code
0
0
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

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. It is insoluble in water, acids, and organic solvents.[1] A yellow solid, it is used as a precursor to the pigment Prussian blue.[2]

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.[3]

References

  1. CRC Handbook of Chemistry and Physics. p. 757. https://ia801308.us.archive.org/27/items/CRC.Press.Handbook.of.Chemistry.and.Physics.85th.ed.eBook-LRN/CRC.Press.Handbook.of.Chemistry.and.Physics.85th.ed.eBook-LRN.pdf. 
  2. Gail, E.; Gos, S.; Kulzer, R.; Lorösch, J.; Rubo, A.; Sauer, M.; Kellens, R.; Reddy, J. et al. (2011). "Ullmann's Encyclopedia of Industrial Chemistry". Ullmann's Encyclopedia of Industrial Chemistry. Weinheim: Wiley-VCH. doi:10.1002/14356007.a08_159.pub3. 
  3. 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. (2018). "Re-evaluation of sodium ferrocyanide (E 535), potassium ferrocyanide (E 536) and calcium ferrocyanide (E 538) as food additives". EFSA Journal 16 (7): 5374. doi:10.2903/j.efsa.2018.5374. PMID 32626000. PMC 7009536. https://www.efsa.europa.eu/en/efsajournal/pub/5374.