orangesphere
Harmless
Posts: 1
Registered: 22-1-2004
Member Is Offline
Mood: =)
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potassium ferrocyanide + citric acid = HCN?
Is it true that, under certain conditions, mixing potassium ferrocyanide with citric acid would produce HCN fumes?  If so, what are these conditions that one should avoid? I don't plan on doing
this myself; I am not a terrorist or suicidal  , but am simply curious. 
This is my first post on this forum, by the way.
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Theoretic
National Hazard
Posts: 776
Registered: 17-6-2003
Location: London, the Land of Sun, Summer and Snow
Member Is Offline
Mood: eating the souls of dust mites
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On warming, almost any acid can produce HCN fumes from ferrocyanides. Citric acid will do it. Strong acids can probably do it without heating.
[Edited on 27-1-2004 by Theoretic]
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