Potassium ferrocyanide
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glebyych
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Potassium ferrocyanide


Hello, I have a trouble finding any information about the K4[fe(cn)6] and k3[fe(cn)6] synthesis. Could anyone share the information about how these compounds are made
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ChenBeier
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The old method was to cook meat, blood, iron parts and pot ash together.
Today Calciumhydroxide, hydrogen cyanide and iron chloride react each other to Calciumhexacyanidoferrat. This will react with potassium carbonate.
The yellow one will be slightly oxidized to get them red one.

https://en.m.wikipedia.org/wiki/Potassium_ferrocyanide#Synthesis

https://en.m.wikipedia.org/wiki/Potassium_ferricyanide
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