Kloberth
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Praparation of Nitromethane
When preparing sodium nitrite from Nitrate via reduction you get a product contaminated heavily with the starting nitrate.
Would this Nitrate contamination mess in any way with the praparation of nitromethane from chloroacetic acid if the stöchiometry is adjusted to the
percentage of nitrite present?
sry if this is answered anywhere already i couldnt find it
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bnull
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Quote: Originally posted by Kloberth  | When preparing sodium nitrite from Nitrate via reduction you get a product contaminated heavily with the starting nitrate.
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Was it reduction with starch, as in https://www.sciencemadness.org/talk/viewthread.php?tid=52&am...?
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Kloberth
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like this: https://youtu.be/8LSCJnqRjes?si=Eop8AqXyojwVk70g
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Sir_Gawain
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By “heavily contaminated”, do you mean 25%? 50%? If it’s mostly nitrite, it will probably work. Just try it on a small scale.
“Alchemy is trying to turn things yellow; chemistry is trying to avoid things turning yellow.” -Tom deP.
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clearly_not_atara
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My guess is probably not, nitrate is very unreactive to nucleophilic substitution, but I guess I'm hesitant because the product nitrate esters are
shock-sensitive explosives. Still, you need two pretty unfavorable reactions both occurring to get methyl nitrate contamination in your product. As
long as you extract NM with NP solvent I think that blowing yourself up is very unlikely.
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Sir_Gawain
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All sodium nitrite has some amount of nitrate from air exposure, so the presence of nitrate isn’t going to instantly kill the reaction. Large
amounts, though, might form unwanted side products or slow down the reaction.
“Alchemy is trying to turn things yellow; chemistry is trying to avoid things turning yellow.” -Tom deP.
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Kloberth
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Ill try the reaction when I have time to synthesize more Chloroacetic acid and i also have to measure the nitrite content of my sodium nitrite, which
is currently cristallizing.
Ill report back and thanks for the info.
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Ephraim_Bane
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What are you preparing nitromethane for? It looks like it's mainly a fuel component, if nitromethane keeps giving you trouble perhaps you might try to
make some other nitroalkane?
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clearly_not_atara
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I think a key reason is that it's the easiest saturated aliphatic nitro compound to make 
Unless that nitroethane from anethole idea turns out to work.
[Edited on 7-2-2024 by clearly_not_atara]
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