AllChemystery - 2017-05-21
Method-1 for making Aminoguanidine bicarbonate from calcium cyanamide and hydrazine sulfate. I have a second method using nitroguanidine as the starting material but need to edit the video..... we formed the aminoguanidine in acceptable yield by mixing the two dry powders and adding them to water while keeping a very good eye on the PH at all times. the PH is modified with additions of 50% sulfuric acid to keep it at the prescribed 9-9.5. this is reacted for a short while and once again the PH is modified to 7. we then heated the reaction for an hour and filtered off the calcium sulfate by product leaving the product in the filtrate which was slightly affected by oxygen in the air. the filtrate was again modified by acid addition and sodium bicarbonate was added to precipitate the target product. we then recrystallized it from boiling water to get a purified product which is ideal to be further processed into 5-Aminotetrazole. Music: I Am Running Down the Long Hallway of Viewmont Elementary by Chris Zabriskie is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/...) Source: http://chriszabriskie.com/honor/ Artist: http://chriszabriskie.com/
Great video. Will calcium carbonate work instead of CaO? calcium Oxide is difficult to obtain. I figured the carbonate would be converted to Oxide in the heat of the reaction anyways.
Cannagorilla Canna you can heat the carbonate to decomp to CaO. I think I did a video on that too. It happens fairly fast under 800c+ temperatures. It can be done in a crucible under a Bunsen flame but will take longer.
@AllChemystery thank you. I followed your advice. Great yield by the way.
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You can make video about trinitroxylene- easy.
Out of curiosity, does the orange solution contain only the freebase aminoguanidine or are there other AG salts there as well?
Chemical Engineer correct- it’s the Aminoguanidine freebase solution. Its meant to be pale yellow but there’s oxidation present.
Ah, OK thanks.
Derek Suárez - 2017-05-21
The red color from the oxygen in the air reacting with the filtrate is interesting. The filtrate must be pretty reative !