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氰化亚铁由六氰合铁(II)酸铵在320℃分解得到。
3 (NH4)4Fe(CN)6→Fe2Fe(CN)6+12 NH4CN
氰化亚铁与氢氧化钾水溶液反应，产生氢氧化亚铁和亚铁氰酸钾。[1]
Fe2Fe(CN)6+4 KOH→2 Fe(OH)2+K4Fe(CN)6
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