parham
Harmless
Posts: 1
Registered: 6-4-2019
Location: Shiraz
Member Is Offline
|
|
Making kcn from koh, formic acid and nh4cl!
Hi, I've recently read on wikipedia that it's possible to make formamide out of ammonia and formic acid by heating ammonium formate.
If it's possible how can I get approximately pure kcn out of these chemicals?
|
|
Eddygp
National Hazard
Posts: 858
Registered: 31-3-2012
Location: University of York, UK
Member Is Offline
Mood: Organometallic
|
|
How do you suggest that formamide --> cyanide would happen?
It already seems unlikely to obtain cyanate from it and that seems more plausible.
For cyanide you'd somehow have to deprotonate at some point AND lose H2O...
there may be bugs in gfind
[ˌɛdidʒiˈpiː] IPA pronunciation for my Username
|
|
DavidJR
National Hazard
Posts: 908
Registered: 1-1-2018
Location: Scotland
Member Is Offline
Mood: Tired
|
|
Quote: Originally posted by Eddygp | How do you suggest that formamide --> cyanide would happen?
It already seems unlikely to obtain cyanate from it and that seems more plausible.
For cyanide you'd somehow have to deprotonate at some point AND lose H2O... |
Apparently, in the presence of solid acid catalysts, formamide can be dehydrated to form HCN. Reacting that with KOH gives KCN.
|
|