Bender84
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SO2 influence on nitration
Hello,
Can someone point me to a paper or a book were I can read about the influence of free SO2 in conc. sulphuric acid which is used for nitrating mixture/
mixed acid preparation?
It is know that in conc. >85% the solubility of SO2 in sulphuric acid increases, but I couldn't find any information about its (SO2) influence on
nitration (if there is any)?
Best.
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caterpillar
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Quote: Originally posted by Bender84  | Hello,
Can someone point me to a paper or a book were I can read about the influence of free SO2 in conc. sulphuric acid which is used for nitrating mixture/
mixed acid preparation?
It is know that in conc. >85% the solubility of SO2 in sulphuric acid increases, but I couldn't find any information about its (SO2) influence on
nitration (if there is any)?
Best. |
Where did you find H2SO4 with dissolved SO2? It is a rather exotic solution. Oleum is the solution of SO3 in sulphuric acid and is used for nitration.
Women are more perilous sometimes, than any hi explosive.
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Bender84
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Hello caterpillar,
Please see "The Solubility of Sulphur Dioxide in Sulphuric Acid" by FD Miles and J. Fenton (doi: 10.1039/CT9201700059).
Best.
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caterpillar
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| Quote: Originally posted by Bender84 | Hello caterpillar,
Please see "The Solubility of Sulphur Dioxide in Sulphuric Acid" by FD Miles and J. Fenton (doi: 10.1039/CT9201700059).
Best. |
And what? I can dissolve some salt in the water but it doesn't mean, that I will drink water with salt- I will use clean water for drinking. Where
will you get sulphuric acid with a significant amount of dissolved SO2?
Women are more perilous sometimes, than any hi explosive.
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Bender84
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Yes, you're right. But I'am asking this because usually I use H2SO4 that contains up to 50 ppm of dissolved SO2 for my nitrations. I was given an acid
that contains up to 80 ppm of SO2 and I was asked if it is a problem? I really didn't know what to answer and couldn't find any information on the
influence of SO2 on the process.
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njl
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80 PPM of SO2 is about 0.00125 M
95 percent H2SO4 is around 17 M
This amount of SO2 is inconsequential.
Reflux condenser?? I barely know her!
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Bender84
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Great! Thank you!
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caterpillar
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And, moreover, when you add nitric acid or some nitrate to sulphuric acid, SO2 will definitely be turned into SO3.
Women are more perilous sometimes, than any hi explosive.
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njl
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Exactly that. I thought OP meant something more like a saturated solution of SO2 in H2SO4.
Reflux condenser?? I barely know her!
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