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Author: Subject: Short question / quick answer - Thread
dettoo456
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[*] posted on 26-3-2026 at 17:22


I recently picked up a 5L jacketed reactor for fairly cheap (one of the good old chinese ones), and I was planning on using it for small scale polyol nitrations, seeing as the overhead stirrer is a convenient way to agitate thicker KNO3/H2SO4 mixtures and the jacket can reliably keep things cold.

I didn't think till just now though, that there might be some nitrate product, especially a friction sensitive one, dropping out of solution at the end of the rxn. Would draining that powder/crystal though the bottom spout be a really bad idea?

The valve on my reactor, and even on most chemglass or ace ones, leave a very small gap for the liquid/solid mix to drain though and potentially rub or clog. Trying to yank out the PTFE drain too, while it presses a potentially sensitive EM against glass is sketchy sounding.

Anyone have any advice or warnings?
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[*] posted on 26-3-2026 at 19:36


Did I just read 5L and small scale in the same sentence?

I don't think you'll get KNO3-H2SO4 through a tap anyway, unless I'm picturing things wrong, most products I can think of near solidify that mixture.
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dettoo456
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[*] posted on 27-3-2026 at 13:35


I plan to only use maybe 500ml total in the reactor, and I figure the overhead stirrer will brute force mix even a really dense mixture.

And yea, it sounds unlikely unless I applied positive pressure to the system but thats a bad idea too. I'll probably stick to WFNA if I use it to nitrate
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