Description
Potassium Ferricyanide laboratory grade manufacturer, supplier and exporter.Application: 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 Dose: You may click here to know more about passivation liquid , other methods for PASSIVATION TEST Do you know A-A-A methods for Passivation ? click here…………Note: 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