Sciencemadness Discussion Board
Not logged in [Login ]
Go To Bottom

Printable Version  
Author: Subject: Guanidine Carbonate and Hydroxide
AlphitO
Harmless
*




Posts: 2
Registered: 11-3-2015
Member Is Offline

Mood: No Mood

[*] posted on 11-3-2015 at 03:41
Guanidine Carbonate and Hydroxide


Hello,

I'm trying to extract guanidine hydroxide of a solution with guanidine carbonate too. But i couldn't find any information to help me about some extrator for ONLY guanidine hydroxide. Some help/tips?
View user's profile View All Posts By User
Tdep
National Hazard
****




Posts: 516
Registered: 31-1-2013
Location: Laser broken since Feb 2020 lol
Member Is Offline

Mood: PhD is done! It isn't good but it's over lol

[*] posted on 11-3-2015 at 04:12


Convert it all to guanidine nitrate and then all to the hydroxide?
View user's profile View All Posts By User
AlphitO
Harmless
*




Posts: 2
Registered: 11-3-2015
Member Is Offline

Mood: No Mood

[*] posted on 11-3-2015 at 07:57


Quote: Originally posted by Tdep  
Convert it all to guanidine nitrate and then all to the hydroxide?


I want to know how much i have of guanidine hydroxide and how much of guanidine carbonate. There is some pappers showing the guanidine hydroxide, after some reaction with guanidine carbonate as reactant, going back to the carbonate form. So, i need to extract my hydroxide (that is my product of interest) from the solution to stop it before it turn out to the carbonate form.
View user's profile View All Posts By User
Boffis
International Hazard
*****




Posts: 1837
Registered: 1-5-2011
Member Is Offline

Mood: No Mood

[*] posted on 11-3-2015 at 08:44


Guanidine hydroxide is an equilibrium mixture like ammonia solution and so in solution exists as a mixture of guanidine base, water and guanidine hydroxide. I don't have equilibrium data to hand but since the solution is strongly basic the hydroxide ion concentration must be fairly high (higher than with ammonia solution).

However, guanidine solution is unstable and needs to be used fairly quickly.

It can be prepared from the carbonate solution by treatment with barium or calcium hydroxide and filtering off the alkaline metal carbonate or it can be prepared from the chloride by shaking with excess silver oxide.
View user's profile View All Posts By User

  Go To Top