Potassium Ferricyanide Pure III NOT FOR SALE
Product code RXSOL-60-6126-050
Potassium Ferricyanide
Potassium ferricyanide is also one of two compounds present in ferroxyl indicator solution (along with phenolphthalein) which turns blue (Prussian blue) in the presence of Fe2+ ions, and which can therefore be used to detect metal oxidation that will lead to rust. It is possible to calculate the number of moles of Fe2+ ions by using a colorimeter, because of the very intense color of Prussian blue Fe4[Fe(CN)6]3.
SAFETY :
Potassium ferricyanide has very low toxicity, its main hazard being that it is a mild irritant to the eyes and skin. However, under very strongly acidic conditions, highly toxic hydrogen cyanide gas is evolved, according to the equation:
6 H+ + [Fe(CN)6]3− → 6 HCN + Fe3+[9]
The reaction with hydrochloric acid is as follows:
6 HCl + K3[Fe(CN)6] → 6 HCN + FeCl3 + 3 KCl
Application
- Potassium ferricyanide (Prussian Red) is an orange solid, It is mainly used as a pigment for staining or in photography, but also in analytical chemistry for its oxidizing properties.Potassium ferricyanide(III) is a potassium salt widely employed as an external indicator in potassium dichromate titrations.
- A sensor containing potassium ferricyanide assisted enzyme electrode for estimating maltose and glucose in samples has been reported. Addition of potassium ferricyanide in the catholyte can improve the generation of power in microbial fuel cells (MFCs).
- Potassium ferricyanide was used with ferric ammonium citrate to sensitize paper for the cyanotype process and mixed with hypo to make Farmer’s reducer which was used to reduce the density of silver-based images.
- This compound found various applications such as producing blueprints, photography, wood staining, wool dyeing, calico printing, etching liquid (Mercer's liquor), tempering iron and steel, electroplating, mild oxidizing agent in organic synthesis, and analytical chemistry.
- It is used in many amperometric biosensors as an electron transfer agent replacing an enzyme's natural electron transfer agent with the enzyme glucose oxidase. It is a major component of Murakami's etchant for cemented carbides.
Dosage
IUPAC name : Potassium hexacyanoferrate(III)
Identifiers
CAS number 13746-66-2 Y
PubChem 26250
RTECS number LJ8225000
Properties
Molecular formula C6N6FeK3
Molar mass 329.24 g/mol
Appearance deep red crystals
Density 1.89 g/cm3, solid
Melting point 300 °C, 573 K, 572 °F
Boiling point : decomp.
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