orangesphere - 26-1-2004 at 12:40
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.
Theoretic - 27-1-2004 at 05:23
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]