Doped-Al2O3-fusion
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Sodium Nitroprusside Synthesis
I performed two attempts at synthesizing sodium nitroprusside recently. My first attempt was mostly failure with a minuscule yield. It was soon lost
to acts of frustration during the recrystallizing procedure to purify.
The second attempt I performed a full sized batch according to a procedure I followed from the 1800s or something. These were in my book, horrible
inaccurate and vague instructions. So, I split the batch into several equal portions to experiment with modifications to the procedures in the next
steps. Two of these separated batches were complete failures, but yesterday I found the forgotten third flask which I had placed off to the side in
the dark to avoid light decomposition.
I treated this batch through several filtrations and careful evaporation yesterday and through the night last night. To my excitement I come down to
my office finding this. Crystals!!!
This is a huge win for me since I had so many frustrations trying to get a successful run. I'm going through some hard times in my personal life
right now, so finding something as simple as a crystallized solution of a substance I've been struggling to successfully synthesize brings a bit of
much needed happiness.
I will attempt to recreate the steps I performed in a "How-to" post later on.
I'm more likely to die doing what I love. I'm a hobby chemist. I void warranties.
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Doped-Al2O3-fusion
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I've got the dried crystals. The yield is approximately 30% which is a lot better than my first attempt yield of less than 15%
I'm also noting that the successful batch measures at approximately 8 pH.
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Boffis
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Nice looking product there D.A.F.. I look forward to reading your experimental write-up. What do you intend to do with it? It has some really
interesting properties because the -NO group is quite laibile and easily replaced by ammonia, amines etc. I think that the nitroprussides are the most
interesting of the iron cyanide complexes.
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Velzee
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Nice! Would like to see your write up as well.
Check out the ScienceMadness Wiki: http://www.sciencemadness.org/smwiki/index.php/Main_Page
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Boffis
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@ DAF. just out of a matter of interest which method are you using, the nitric acid oxidation of ferrocyanide or the sodium nitrite-barium
displacement technique?
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Doped-Al2O3-fusion
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Quote: Originally posted by Boffis  | | Nice looking product there D.A.F.. I look forward to reading your experimental write-up. What do you intend to do with it? It has some really
interesting properties because the -NO group is quite laibile and easily replaced by ammonia, amines etc. I think that the nitroprussides are the most
interesting of the iron cyanide complexes. |
It's been a while since I last checked this thread out.--sorry for the delay.
I really don't know what I'll ever do with the sodium nitroprusside other than admire what little I have stored away at the moment. I know it won't
hang around forever and honestly, I should check on it to see how it's holding up. I plan on revisiting this experiment sometime again in the future
and I will definitely write up a detailed summary. I want to have a better yield and I'm hoping that will happen on the next attempt.
I'll get the last set of notes I made and post them if it will be too much longer.--says me many months later...
I used the the nitric acid oxidation of ferrocyanide technique both times.
[Edited on 24-9-2019 by Doped-Al2O3-fusion]
I'm more likely to die doing what I love. I'm a hobby chemist. I void warranties.
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