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Ferrocyanide of Potassium K Cfy+3HO, or K C N Fe+3HO, is generally known by the name of yellow prussiate of potassa. It contains ferrocyanogen, a compound radical, consisting of 1 eq. of metallic iron and 3 eq. of the elements of cyanogen, and is designated by the symbol Cfy. Cyanide of potassium is generated in large quantities.
The radical ferridcyanogen, isomeric with ferrocyanogen, is supposed to be formed by the coalescence of two equivalents of ferrocyanogen, and is represented by the symbol Cfdy; accordingly the formula of ferridcyanide of potassium is K Cfdy.
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