DennyDevHE77
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Dehydration of nitric acid with acetic anhydride
I apologize in advance if this topic has already been discussed here, I could not find it through Google, if anything, just send me this topic, and
this one can be deleted.
In general, the question is simple: is it possible to dissolve an excess of acetic anhydride in 70% nitric acid to end up with a mixture of 100%
nitric acid, glacial acetic acid and acetic anhydride? I read that the hydrolysis of acetic anhydride to acetic acid takes two weeks. But in the cold.
So I decided that it might be possible to hold the mixture for some time in a hot water bath?
I didn’t find such a way anywhere, no one writes about this, so I decided to ask here, because in theory it should work, but nothing is known in
practice
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Fery
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There are even nitrations in acetic anhydride - to trap the reaction water so the nitration proceeds in anhydrous environment.
https://pubs.acs.org/doi/pdf/10.1021/ja01553a002
https://pubs.acs.org/doi/pdf/10.1021/ja01553a001
Acetic anhydride is also used to remove water from 70% HClO4 https://www.sciencemadness.org/whisper/viewthread.php?tid=15...
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unionised
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https://www.sciencedirect.com/science/article/abs/pii/S03043...
"Abstract
The adoption of Ac2O/HNO3 mixtures for the nitration of organics or the preparation of nitric esters is not free from some risks of explosion. "
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B(a)P
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Urbanski V1 discusses nitration using acetic anhydride at length if I recall correctly.
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AvBaeyer
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If you mix nitric acid and acetic anhydride you may be in for some excitement per unionised. Look up acetyl nitrate.
AvB
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