chief
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NaMnO4- solution, from KMnO4:
I asked this on another thread, but noone comes around there, so here:
I want NaMnO4- solution, from KMnO4: Does anyone have the temperature-dependency of the solubility of NaMnO4 ?
Also I wonder, what would be better:
==> KMnO4 (hot solution) + Na2CO3 ==> K2CO3 + NaMnO4 ,
or
==> + NaNO3 ==> KNO3 + NaMnO4 ?
I also have a lot of Na2SO4 (==> K2SO4 + NaMnO4)
Any ideas ? Where to get those solubilities ? (I could provide crystal structures, for exchange ...)
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chief
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It would probably have to be that reaction, where the potassium-byproduct could be easiest separated/crystallized/ precipitated.
Also I want the NaMnO4-solution because of the higher possible concentration; when making from KMnO4 (hot sol.) it still will have to be concentrated:
Any Ideas of how to avoid all the boiling ?
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12AX7
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Outside chance you could use NaClO4 or NaIO3 to precipitate potassium. KMnO4 is already quite low in solubility. The seperation won't be great.
The easiest way is to buy concentrated NaMnO4 solution...
Tim
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chloric1
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Ion exchange- Zeolites are sold with fish tank supplies. You can convert the zeolite to is calcium version by two or three thorough treatments of the
zeoite with 30% Calcium Chloride. Once in calcium form, you can add hot 5% KMnO4 through the Ca-zeolite a couple times until most of the potassium is
switched with calcium making calcium permanganate solution. This is concentrated by evaporation and if there is remaining potassium permanganate, it
will deposit from the concentrated liquor when cooled. When you are sure you have mostly calcium permanganate, add sodium carbonate and there you go.
You can try converting zeolite directly to the sodium form but I am not sure it would effectively exchange potassium for sodium. I read about the
calcium route somewhere and wanted to try it out but have not yet.
Fellow molecular manipulator
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Picric-A
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I have done a methasis reaction many times to produce NaMnO4.
I normally use the chlorate but looking at my solubility tables sodium sulphate would work ok. It is cheap and widely available wich is a bonus but if
u have acess to the chlorate use that instead.
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