Nitrous2000
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question about nitrating "aqueous amine hydroxides"
Hi folks,
I've been looking at HAN (hydroxylammonium nitrate) synthesis.
I'm wondering about using hydroxylamine salts ie hydrochloride or sulphate.
Any advice on starting materials?
I've found a paper that details nitration of "aqueous amine hydroxides" with nitric acid.... but my basic organic chemistry is pretty remote (was a
physical chemist in my previous life)
Thanks guys,
Nitrous
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Tsjerk
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What did you find?
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Nitrous2000
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I can send you the translation from Korean to English
otherwise, here's the link to the paper - google translate seems to do an adequate job resulting in a readable paper.
https://koreascience.kr/article/JAKO201913747257947.pdf
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DraconicAcid
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I'm guessing it's referring to the aqueous amines as ammonium hydroxides?
Please remember: "Filtrate" is not a verb.
Write up your lab reports the way your instructor wants them, not the way your ex-instructor wants them.
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Nitrous2000
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I wondered about that... but I don't think ti could be as simple as "take ammonium hydroxide and add nitric acid' But I don't remember the term "amine
hydroxide"
The goal is hydroxylammonium nitrate, so beginning with hydroxylamine solutions is key.
Some have referred to the sulfate or hydrochloride, but acknowledge that purification is a problem.
One route to HAN is hydroxylamine sulfate with barium nitrate. Science Madness seems to have some references https://www.sciencemadness.org/smwiki/index.php/Hydroxylammo...
I guess my question is "what's the simplest "amine hydroxide?" is it ammonium hydroxide?
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clearly_not_atara
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"Is ammonia an amine?"
Kind of a philosophical question, but I'm going with no, because we don't usually refer to water as an alcohol. So the simplest example would be
methylammonium nitrate. But how would that help?
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Nitrous2000
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Ammonium hydroxide
I guess I'm struggling with the term "amine hydroxide"
the end result is hydroxylammonium nitrate
I guess the simplest route might be barium nitrate and hydroxylamine sulfate.
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clearly_not_atara
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If your translation mentions "amine hydroxides", it's wrong. The paper I see clearly states | Quote: | | In this study, relatively a safe propellant, hydroxylammonium nitrate[NH3OHNO3], was prepared via a neutralization reaction of hydroxylamine[NH2OH]
and nitric acid[HNO3]. |
which doesn't leave much to the imagination. There are no "amine hydroxides" here.
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Nitrous2000
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agreed. But the barium nitrate approach is old, but tried and true.
The "amine hydroxide" is from the paper I cited. 
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