Potassium ferricyanide

Potassium ferricyanide
Names
	IUPAC name Potassium hexacyanoferrate(III)
	Other names Red prussiate of Potash,; Prussian red,; Potassium ferricyanide
Identifiers
CAS Number	13746-66-2 ;
3D model (JSmol)	Interactive image;
ChEBI	CHEBI:30060;
ChemSpider	24458 ;
ECHA InfoCard	100.033.916
EC Number	237-323-3;
Gmelin Reference	21683
PubChem CID	26250;
RTECS number	LJ8225000;
UNII	U4MAF9C813 ;
CompTox Dashboard (EPA)	DTXSID9031939 ;
	InChI InChI=1S/6CN.Fe.3K/c61-2;;;;/q6-1;+3;3+1 Key: BYGOPQKDHGXNCD-UHFFFAOYSA-N ; InChI=1S/6CN.Fe.3K/c61-2;;;;/q6-1;+3;3+1 Key: BYGOPQKDHGXNCD-UHFFFAOYAG;
	SMILES [K+].[K+].N#C[Fe-3](C#N)(C#N)(C#N)(C#N)C#N.[K+];
Properties
Chemical formula	K3[Fe(CN)6]
Molar mass	329.24 g/mol
Appearance	deep red crystals, sometimes small pellets, orange to dark red powder
Density	1.89 g/cm3, solid
Melting point	300 °C (572 °F; 573 K)
Boiling point	decomposes
Solubility in water	330 g/L ("cold water"); 464 g/L (20 °C); 775 g/L ("hot water")
Solubility	slightly soluble in alcohol ; soluble in acid; soluble in water
Magnetic susceptibility (χ)	+2290.0·10−6 cm3/mol
Structure
Crystal structure	monoclinic
Coordination geometry	octahedral at Fe
Hazards
	GHS labelling:
Pictograms
Signal word	Warning
Hazard statements	H302, H315, H319, H332, H335
Precautionary statements	P261, P264, P270, P271, P280, P301+P312, P302+P352, P304+P312, P304+P340, P305+P351+P338, P312, P321, P330, P332+P313, P337+P313, P362, P403+P233, P405, P501
NFPA 704 (fire diamond)	1 0 0
Flash point	Non-flammable
	Lethal dose or concentration (LD, LC):
LD50 (median dose)	2970 mg/kg (mouse, oral)
Safety data sheet (SDS)	MSDS
Related compounds
Other anions	Potassium ferrocyanide
Other cations	Prussian blue
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) Infobox references

Potassium ferricyanide is the chemical compound with the formula K₃[Fe(CN)₆]. This bright red salt contains the octahedrally coordinated [Fe(CN)₆]³⁻ ion.^[2] It is soluble in water and its solution shows some green-yellow fluorescence. It was discovered in 1822 by Leopold Gmelin.^[3]^[4]

^ Kwong, H.-L. (2004). "Potassium Ferricyanide". In Paquette, L. (ed.). Encyclopedia of Reagents for Organic Synthesis. New York: J. Wiley & Sons. doi:10.1002/047084289X. hdl:10261/236866. ISBN 9780471936237.
^ Sharpe, A. G. (1976). The Chemistry of Cyano Complexes of the Transition Metals. London: Academic Press.
^ Gmelin, Leopold (1822). "Ueber ein besonderes Cyaneisenkalium, and über eine neue Reihe von blausauren Eisensalzen" [On a particular potassium iron cyanate, and on a new series of iron salts of cyanic acid]. Journal für Chemie und Physik (in German). 34: 325–346.
^ Ihde, A.J. (1984). The Development of Modern Chemistry (2nd ed.). New York: Dover Publications. p. 153.

[1] Kwong, H.-L. (2004). "Potassium Ferricyanide". In Paquette, L. (ed.). Encyclopedia of Reagents for Organic Synthesis. New York: J. Wiley & Sons. doi:10.1002/047084289X. hdl:10261/236866. ISBN 9780471936237.

[2] Sharpe, A. G. (1976). The Chemistry of Cyano Complexes of the Transition Metals. London: Academic Press.

[3] Gmelin, Leopold (1822). "Ueber ein besonderes Cyaneisenkalium, and über eine neue Reihe von blausauren Eisensalzen" [On a particular potassium iron cyanate, and on a new series of iron salts of cyanic acid]. Journal für Chemie und Physik (in German). 34: 325–346.

[4] Ihde, A.J. (1984). The Development of Modern Chemistry (2nd ed.). New York: Dover Publications. p. 153.

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Names


IUPAC name Potassium hexacyanoferrate(III)
Other names Red prussiate of Potash, Prussian red, Potassium ferricyanide
Identifiers
CAS Number	13746-66-2^Y
3D model (JSmol)	Interactive image
ChEBI	CHEBI:30060
ChemSpider	24458^N
ECHA InfoCard	100.033.916
EC Number	237-323-3
Gmelin Reference	21683
PubChem CID	26250
RTECS number	LJ8225000
UNII	U4MAF9C813^Y
CompTox Dashboard (EPA)	DTXSID9031939
InChI InChI=1S/6CN.Fe.3K/c61-2;;;;/q6-1;+3;3+1^N Key: BYGOPQKDHGXNCD-UHFFFAOYSA-N^N InChI=1S/6CN.Fe.3K/c61-2;;;;/q6-1;+3;3+1 Key: BYGOPQKDHGXNCD-UHFFFAOYAG
SMILES [K+].[K+].N#C[Fe-3](C#N)(C#N)(C#N)(C#N)C#N.[K+]
Properties
Chemical formula	K₃[Fe(CN)₆]
Molar mass	329.24 g/mol
Appearance	deep red crystals, sometimes small pellets, orange to dark red powder
Density	1.89 g/cm³, solid
Melting point	300 °C (572 °F; 573 K)
Boiling point	decomposes
Solubility in water	330 g/L ("cold water") 464 g/L (20 °C) 775 g/L ("hot water")^[1]
Solubility	slightly soluble in alcohol soluble in acid soluble in water
Magnetic susceptibility (χ)	+2290.0·10⁻⁶ cm³/mol
Structure
Crystal structure	monoclinic
Coordination geometry	octahedral at Fe
Hazards
GHS labelling:
Pictograms
Signal word	Warning
Hazard statements	H302, H315, H319, H332, H335
Precautionary statements	P261, P264, P270, P271, P280, P301+P312, P302+P352, P304+P312, P304+P340, P305+P351+P338, P312, P321, P330, P332+P313, P337+P313, P362, P403+P233, P405, P501
NFPA 704 (fire diamond)	1 0 0
Flash point	Non-flammable
Lethal dose or concentration (LD, LC):
LD₅₀ (median dose)	2970 mg/kg (mouse, oral)
Safety data sheet (SDS)	MSDS
Related compounds
Other anions	Potassium ferrocyanide
Other cations	Prussian blue
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). N verify (what is ^YN ?) Infobox references