Bedlasky
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Ammonium oxalate decomposition
Hi.
I decided to let evaporate some water from ammonium oxalate solution. I heated up and after 20 minut or so I realized that ammonium oxalate probably
decomposed. I read that first decompose to oxamide and then to CO and CO2. I didn't see any bubbles but I am not sure - did in temperatures bellow
100°C released carbon monoxide gas?
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Tsjerk
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Why do you think it decomposed? It is stable up to 155.
https://dacemirror.sci-hub.tw/journal-article/242aa518bc0e23...
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fusso
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I tried making and boiling such solution indoors. I didnt feel uncomfortable or die from that.
[Edited on 190707 by fusso]
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Bedlasky
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For example:
https://www.sciencedirect.com/science/article/abs/pii/001021...
http://www.sciencemadness.org/smwiki/index.php/Ammonium_oxal...
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Tsjerk
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Quote: Originally posted by Bedlasky
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|| For example:
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|| https://www.sciencedirect.com/science/article/abs/pii/001021...
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|| http://www.sciencemadness.org/smwiki/index.php/Ammonium_oxal...
Did you read the sciencedirect article? It actually says the anhydrous salt decomposes at 155. The SM wiki is wrong as many of them are.
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Bedlasky
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Sciencedirect article says that decomposition starts on 105°C.
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Tsjerk
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No it doesn't, it says it loses water at 105, the anhydrous salt is stable up to 155.
Second reference: https://sci-hub.tw/https://doi.org/10.1111/j.1151-2916.1971....
Edit: next time: copy the DOI next to the abstract you see, go to sci-hub.tw and read the full length article. You didn't even had to read the
full-length article as the answer is in the introduction.
[Edited on 8-7-2019 by Tsjerk]
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