wertfun
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How disolve this?
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Swiw has found a product which has NITROETHANE .TETRAHYDROFURAN, METHYLETHYLKETONE, 1NITROPROPANE´and some more things. The metarial looks like
wallpaper glue. Swiw will seperate all from each other. But the metarial is like wallpaper glue, so how should swim disolve the product? First water
or directly to another solvent or some ideas??
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solo
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You can start by finding out the physical properties of each one and find out which solvent will work best for the removal of the ingredient of our
interest, like solubility/non-solubility of each one ...........solo
It's better to die on your feet, than live on your knees....Emiliano Zapata.
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bio2
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.....so how should swim disolve the product.........
I suppose the reason they used that mix of solvents is because it works so maybe try one of them. Makes sense huh?
As Solo said do the research on the physical properties and don't forget the azeotropes!
After you dissolve the shit try a water wash or three first before proceeding to your chosen separation. You will have a lot of fun separating this
stuff and maybe the percentage of what you want is 1 or 2% so look at the MSDS sheet.
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wertfun
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its written there 0-10%. How do you know its 1-2% ?
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solo
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Well it stands to reason that if you have 4-5 mixtures in equal amounts you may have max 20% of each but if it's only 10% then you will have at most
2%minus the loss for going through the separation.......it may turn out to be more work for what it's worth..........solo
It's better to die on your feet, than live on your knees....Emiliano Zapata.
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wertfun
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At least once swiw try for the experience sure It'll be fun, too.
(Damn it, no need to try to fool my self, infact I really got upset to find out that little it is)
[Edited on 9-12-2005 by wertfun]
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mick
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swiw
From the chemicals in there it could be a water washable paint stripper. Low concentration of organics emulsified in a water base, Separation,
extraction from 100 ml would be a mission but if you start of with a gallon.
Try breaking the emulsion by adding some salt and/or water.
You could try a rough filtration to remove some of the surfactant.
Under vacuum or a slow gravity filtration would allow most of the organics to evaporate.
A distillation could give the volite organic fraction (+some water ?) which then need to be separated.
Nitroethane and nitropropane are proably the most volatile so could be easily lost and very hard to separate.
THF and methylethylketone might be separated by their water misciblity and salting out but that is just a guess.
If you managed to get 50 ml+ of any of the chemicals I would think that is good. A bit like extracting natural products.
mick
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neutrino
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Vogel had a section on breaking emulsifications, look there. IIRC, there was something about adding alcohol or something... Look it up.
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mick
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I was wrong above, the nitroethane and nitropropane are the higher boiling, over a 100oC. THF is the lowest and then MEK (butan-2-one) (80 oC).
mick
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wertfun
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I think water will break the emulsion but there is also POLYVINYL CHLORIDE RESIN and CYLCLOHEXANONE in mixture. NITROETHANE and 1-NITROPROPANE have
the highest boiling points. First MEK and THF will go then after 114 C nitroethane and 1 nitropropane ( these both needed, no need to seperate will
be collected, but what about POLYVINYL CHLORIDE RESIN and CYLCLOHEXANONE what happens with them in the while?
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DrP
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The PVC resin won't go accross in the distillation - it will stay behind as solid gunk at a guess (depending on molecular weight).
Cyclohexanone boils at 155 C acording to its data sheet. 
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wertfun
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I think I am a chemist since I was born;-) I guessed the same for the PVC even without any chem studying. but thanks.
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DrP
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| Quote: |
but what about POLYVINYL CHLORIDE RESIN and CYLCLOHEXANONE what happens with them in the while?
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Sorry - wasn't sure what you wanted to know about them.
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wertfun
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I think you answered already in your first post. I wanted to know while evporating (distilling nitroethane and 1nitropropane what about POLYVINYL
CHLORIDE RESIN and CYLCLOHEXANONE evoporate or not and you answered it right.
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