Potassium Hexacyanoferrate(II) Trihydrate

K4Fe(CN)6 • 3H2O

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K-CYFE6-02-C.3HYD (2N) 99% Potassium Hexacyanoferrate(II) Trihydrate Request
K-CYFE6-03-C.3HYD (3N) 99.9% Potassium Hexacyanoferrate(II) Trihydrate Request
K-CYFE6-04-C.3HYD (4N) 99.99% Potassium Hexacyanoferrate(II) Trihydrate Request
K-CYFE6-05-C.3HYD (5N) 99.999% Potassium Hexacyanoferrate(II) Trihydrate Request


Potassium Hexacyanoferrate(II) Trihydrate is generally immediately available in most volumes. High purity, submicron and nanopowder forms may be considered. American Elements produces to many standard grades when applicable, including Mil Spec (military grade); ACS, Reagent and Technical Grade; Food, Agricultural and Pharmaceutical Grade; Optical Grade, USP and EP/BP (European Pharmacopoeia/British Pharmacopoeia) and follows applicable ASTM testing standards. Typical and custom packaging is available. Additional technical, research and safety (MSDS) information is available as is a Reference Calculator for converting relevant units of measurement.


Potassium ferricyanide trihydrate; Potassium Ferrocyanide Trihydrate; Yellow prussiate; Iron(2+) potassium cyanide hydrate (1:4:6:3); tetrapotassium iron(2+) hexacyanide trihydrate; Ferrate(4-), hexakis(cyano-C)-, tetrapotassium, trihydrate, (OC-6-11)-

Chemical Identifiers

Formula K4Fe(CN)6 • 3H2O
CAS 14459-95-1
Pubchem CID 161067 16211991
MDL MFCD00167023
EC No. 237-722-2
IUPAC Name tetrapotassium; iron(2+); hexacyanide; trihydrate
SMILES [Fe+2].[K+].[K+].[K+].[K+].[C-]#N.[C-]#N.[C-]#N.[C-]#N.[C-]#N.[C-]#N.O.O.O
InchI Identifier InChI=1S/6CN.Fe.4K.3H2O/c6*1-2;;;;;;;;/h;;;;;;;;;;;3*1H2/q6*-1;+2;4*+1;;;


Compound Formula C6H6FeK4N6O3
Molecular Weight 422.39
Appearance Yellow crystals
Melting Point 70 °C
Boiling Point N/A
Density 1.85 g/cm3
Exact Mass 421.839902
Monoisotopic Mass 421.839902

Health & Safety Info  |  MSDS / SDS

Signal Word N/A
Hazard Statements N/A
Hazard Codes N/A
Risk Codes N/A
Safety Statements N/A
Transport Information N/A
Globally Harmonized System of Classification and Labelling (GHS) N/A

Packaging Specifications

Typical bulk packaging includes palletized plastic 5 gallon/25 kg. pails, fiber and steel drums to 1 ton super sacks in full container (FCL) or truck load (T/L) quantities. Research and sample quantities and hygroscopic, oxidizing or other air sensitive materials may be packaged under argon or vacuum. Shipping documentation includes a Certificate of Analysis and Material Safety Data Sheet (MSDS). Solutions are packaged in polypropylene, plastic or glass jars up to palletized 440 gallon liquid totes.

Related Products

FeSee more Iron products. Iron (atomic symbol: Fe, atomic number: 26) is a Block D, Group 8, Period 4 element with an atomic weight of 55.845. The number of electrons in each of Iron's shells is 2, 8, 14, 2 and its electron configuration is [Ar] 3d6 4s2. The iron atom has a radius of 126 pm and a Van der Waals radius of 194 pm. Iron was discovered by humans before 5000 BC. In its elemental form, iron has a lustrous grayish metallic appearance. Iron is the fourth most common element in the Earth's crust and the most common element by mass forming the earth as a whole. Iron is rarely found as a free element, since it tends to oxidize easily it is usually found in minerals such as magnetite, hematite, goethite, limonite, or siderite. Though pure iron is typically soft, the addition of carbon creates the alloy known as steel, which is significantly stronger. For more information on iron, including properties, safety data, research, and American Elements' catalog of iron products, visit the Iron element page. .

KSee more Potassium products. Potassium (atomic symbol: K, atomic number: 19) is a Block S, Group 1, Period 4 element with an atomic weight of 39.0983. The number of electrons in each of Potassium's shells is [2, 8, 8, 1] and its electron configuration is [Ar] 4s1. The potassium atom has a radius of 227.2 pm and a Van der Waals radius of 275 pm. Potassium was discovered and first isolated by Sir Humphrey Davy in 1807. Potassium is the seventh most abundant element on earth. It is one of the most reactive and electropositive of all metals and rapidly oxidizes. As with other alkali metals, potassium decomposes in water with the evolution of hydrogen because of its reacts violently with water, it only occurs in nature in ionic salts. In its elemental form, potassium has a silvery gray metallic appearance, but its compounds (such as potassium hydroxide) are more frequently used in industrial and chemical applications. The origin of the element's name comes from the English word 'potash,' meaning pot ashes, and the Arabic word qali, which means alkali. The symbol K originates from the Latin word kalium.


Recent Research & Development for Potassium

  • Emission of highly excited electronic states of potassium from cryptomelane nanorods. Stelmachowski P, Legutko P, Jakubek T, Indyka P, Sojka Z, Holmlid L, Kotarba A. Phys Chem Chem Phys. 9/30/2015
  • Potassium tert-Butoxide-Catalyzed Synthesis of Benzofuroazepines via Cyclization of 2-Alkynyl Benzyloxy Nitriles. Gai R, Back DF, Zeni G. J Org Chem. 9/30/2015
  • Crystal structure of potassium (1S)-d-lyxit-1-yl-sulfonate monohydrate. Haines AH, Hughes DL. Acta Crystallogr E Crystallogr Commun. 9/30/2015
  • An Integrated View of Potassium Homeostasis. [No authors listed] N Engl J Med. 9/30/2015
  • Mechanisms contributing to myocardial potassium channel diversity, regulation and remodeling. Yang KC, Nerbonne JM. Trends Cardiovasc Med. 9/29/2015
  • Mass spectrometry study of N-alkylbenzenesulfonamides with potential antagonist activity to potassium channels. Martins CC, Bassetto CA Jr, Santos JM, Eberlin MN, Magalhães A, Varanda W, Gonzalez ER. Amino Acids. 9/25/2015
  • Estimation of potassium and magnesium flows in animal production in Dianchi Lake basin, China. Amachika Y, Anzai H, Wang L, Oishi K, Irbis C, Li K, Kumagai H, Inamura T, Hirooka H. Anim Sci J. 9/14/2015
  • Crystal structure of potassium sodium hepta-hydrogen hexa-molybdocobaltate(III) octa-hydrate: an extra-protonated B-series Anderson-type heteropolyoxidometalate. Park KM, Joo HC, Lee U. Acta Crystallogr E Crystallogr Commun. 9/7/2015
  • Prenatal Hypoxia-Ischemia Induces Abnormalities in CA3 Microstructure, Potassium Chloride Co-Transporter 2 Expression and Inhibitory Tone. Jantzie LL, Getsy PM, Denson JL, Firl DJ, Maxwell JR, Rogers DA, Wilson CG, Robinson S. Front Cell Neurosci. 1/26/2015

Recent Research & Development for Iron

  • Oral or intravenous iron for anemia correction in chronic kidney disease? Drüeke TB, Massy ZA. Kidney Int. 9/30/2015
  • Safety Profile of Oral Iron Chelator Deferiprone in Chinese Children with Transfusion-dependent Thalassaemia. Botzenhardt S, Sing CW, Wong IC, Chan GC, Wong LY, Felisi M, Rascher W, Ceci A, Neubert A. Curr Drug Saf. 9/30/2015
  • Further support for the association of GNPAT variant rs11558492 with severe iron overload in hemochromatosis. Besson-Fournier C, Martinez M, Vinel JP, Aguilar-Martinez P, Coppin H, Roth MP. Hepatology. 9/29/2015
  • Iron metabolism in heart failure: Mechanisms and therapeutic approaches. Miranda C. Rev Port Cardiol. 9/28/2015
  • Use of ultrasmall superparamagnetic iron oxide particles for imaging carotid atherosclerosis. Usman A, Sadat U, Patterson AJ, Tang TY, Varty K, Boyle JR, Armon MP, Hayes PD, Graves MJ, Gillard JH. Nanomedicine (Lond). 9/24/2015
  • Iron Overload in Survivors of Childhood Cancer. Schempp A, Lee J, Kearney S, Mulrooney DA, Smith AR. J Pediatr Hematol Oncol. 9/23/2015
  • Binding of dinitrogen to an iron-sulfur-carbon site. ?ori? I, Mercado BQ, Bill E, Vinyard DJ, Holland PL. Nature. 9/15/2015
  • The iron component of particulate matter is antiapoptotic: a clue to the development of lung cancer after exposure to atmospheric pollutants? Lovera-Leroux M, Crobeddu B, Kassis N, Petit PX, Janel N, Baeza-Squiban A, Andreau K. Biochimie. 9/15/2015
  • Iron Status of Cats with Chronic Kidney Disease. Gest J, Langston C, Eatroff A. J Vet Intern Med. 9/1/2015
  • Magnetic circular dichroism and computational study of mononuclear and dinuclear iron(IV) complexes. Ye S, Xue G, Krivokapic I, Petrenko T, Bill E, Que L Jr, Neese F. Chem Sci. 8/24/2015

Free Test Sample Program

We recognize many of our customers are purchasing small quantities directly online as trial samples in anticipation of placing a larger future order or multiple orders as a raw material for production. Since our primary business is the production of industrial quantities and/or highly consistent batches which can be used for commercial production and purchased repeatedly in smaller quantity, American Elements offers trial samples at no charge on the following basis. Within 6 months of purchasing materials directly online from us, you have the option to refer back to that order and advise that it is the intention of your company, institution or lab to either purchase a larger quantity, purchase the material in regular intervals or purchase more on some other basis.

We will then evaluate your future needs and assuming the quantity or number of future purchases qualify, we will fully credit your purchase price with the next order. Because of the many variables in the quantity and number of orders you may place, it is impossible to evaluate whether your future order(s) will qualify for this program prior to your placing your next order. Please know American Elements strongly desires to make this free sample program available to you and will make every effort to do so once your next order is placed.