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Potassium hexacyanoferrate(III), Potassium ferricyanide, reagent, 99,0+%, 100g, US $150 – Picture 0
Potassium hexacyanoferrate(III), Potassium ferricyanide, reagent, 99,0+%, 100g, US $150 – Picture 0

Potassium Hexacyanoferrate(iii), Potassium Ferricyanide, Reagent, 99,0+%, 100g

US $150

  • Tallinn, Estonia
  • May 25th
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Potassium hexacyanoferrate(III), Potassium ferricyanide, reagent, 99,0+%, 100g   Other Names: Red prussiate, Prussian red CAS Number: 13746-66-2 Linear Formula: K3[Fe(CN)6] Molecular Weight: 329.24 Structural Formula: Potassium ferricyanide is the chemical compound with the formula K3[Fe(CN)6].  It is soluble in water and its solution shows some green-yellow fluorescence.  The compound has widespread use in blueprint drawing and in photography (Cyanotype process). Iron and copper toning involve the use of potassium ferricyanide. Potassium ferricyanide is used as an oxidizing agent to remove silver from negatives and positives, a process called dot etching. In color photography, potassium ferricyanide is used to reduce the size of color dots without reducing their number, as a kind of manual color correction. The compound is also used to harden iron and steel, in electroplating, dyeing wool, as a laboratory reagent and as a mild oxidizing agent in organic chemistry.  It is also used in black-and-white photography with sodium thiosulfate (hypo) to reduce the density of a negative or gelatin silver print where the mixture is known as Farmer's reducer; this can help offset problems from overexposure of the negative, or brighten the highlights in the print. Potassium ferricyanide is used in many amperometric biosensors as an electron transfer agent replacing an enzyme's natural electron transfer agent such as oxygen as with the enzyme glucose oxidase. It is used as this ingredient in many commercially available blood glucose meters for use by diabetics. Potassium ferricyanide is combined with potassiun hydroxide (or sodium hydroxide as a substitute) and water to formulate Murakami's etchant. This etchant is used by metallographers to provide contrast between binder and carbide phases in cemented carbides.

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