Calcium ferrocyanide

Chemical compound

Calcium ferrocyanide

Names
Other names

* Dicalcium hexakis(cyano-κC)ferrate(4-)

Identifiers

CAS Number

* 13821-08-4

3D model (JSmol)

* Interactive image

ChemSpider |

* 146050

ECHA InfoCard | 100.034.085
EC Number |

* 237-508-9

E number | E538 (acidity regulators, ...)

PubChem CID

* 166920

UNII |

* 906D36VLZG

CompTox Dashboard (EPA)

* DTXSID80930018

InChI

* InChI=1S/6CN.2Ca.Fe/c6*1-2;;;/q6*-1;3*+2

Key: BAZQCHGUTMBXBU-UHFFFAOYSA-N

SMILES

* [C-]#N.[C-]#N.[C-]#N.[C-]#N.[C-]#N.[C-]#N.[Ca+2].[Ca+2].[Fe+2]

Properties

Chemical formula

| C6Ca2FeN6
Molar mass | 292.109 g·mol−1
Hazards
GHS labelling:

Pictograms

Signal word

| Warning

Hazard statements

| H302, H312, H315, H319, H332, H335

Precautionary statements

| P261, P280, P301+P312, P302+P352, P304+P340, P305+P351+P338, P332+P313
NFPA 704 (fire diamond)  |

Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Infobox references

Chemical compound

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

[edit]

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

[edit]

1. ^ CRC Handbook of Chemistry and Physics (PDF). p. 757.
2. ^ Gail, E.; Gos, S.; Kulzer, R.; Lorösch, J.; Rubo, A.; Sauer, M.; Kellens, R.; Reddy, J.; Steier, N.; Hasenpusch, W. (2011). "Cyano Compounds, Inorganic". Ullmann's Encyclopedia of Industrial Chemistry. Weinheim: Wiley-VCH. doi:10.1002/14356007.a08_159.pub3. ISBN 978-3-527-30673-2.
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. PMC 7009536. PMID 32626000.`{{cite journal}}`: CS1 maint: multiple names: authors list (link)

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* v
* t
* e

*[CID]: Compound ID
*[EPA]: U.S. Environmental Protection Agency
*[H302]: H302: Harmful if swallowed
*[H312]: H312: Harmful in contact with skin
*[H315]: H315: Causes skin irritation
*[H319]: H319: Causes serious eye irritation
*[H332]: H332: Harmful if inhaled
*[H335]: H335: May cause respiratory irritation
*[P261]: P261: Avoid breathing dust/fume/gas/mist/vapours/spray.
*[P280]: P280: Wear protective gloves/protective clothing/eye protection/face protection.
*[P301+P312]: P301+P312: IF SWALLOWED: Call a POISON CENTER or doctor/physician if you feel unwell.
*[P302+P352]: P302+P352: IF ON SKIN: Wash with soap and water.
*[P304+P340]: P304+P340: IF INHALED: Remove victim to fresh air and keep at rest in a position comfortable for breathing.
*[P305+P351+P338]: P305+P351+P338: IF IN EYES: Rinse continuously with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing.
*[P332+P313]: P332+P313: If skin irritation occurs: Get medical advice/attention.
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