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DraconicAcid
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Quote: Originally posted by Chemist_Cup_Noodles  | | I think it would be beneficial to perform a recrystallization of this fascinating salt. I have already thrown some pretty good polar solvents at it,
and I wasn't very hopeful they would work at all but it was all that I have. I'm sure maybe toluene or xylene would do the trick. I haven't seen any
data at all on this salt's solubility so maybe it's up to us to generate it. |
It's a salt, and you think it will dissolve in toluene? Good luck.
Acetonitrile *might* work, but you may not get the original salt back.
Please remember: "Filtrate" is not a verb.
Write up your lab reports the way your instructor wants them, not the way your ex-instructor wants them.
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crystal grower
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http://chem.pieceofscience.com/?p=988
This is my article about chevruls salt, if I would ever succesfully recrystalize it, I'll add it to the article.
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The Volatile Chemist
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Just curious, has DMSO ever been tried? Sorry, I don't know my solvents too well...
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Fidelmios
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Just to add on a little bit here.. I recently preformed the experiment outlined by Mrhomescientist (http://thehomescientist.blogspot.com/2013/10/chevruels-salt....) but did so with 3x the reagents. After mixing the two solutions I decided to heat
a large amount of it, and finish the experiment outlined above, but a small amount of it I decided to try and produce the salt with a slow
evaporation. (I also wanted to see if it affected the crystal size)
While the slow evaporation DID work, it took quite a long time, and many impurities remained in the evaporation dish (most of which were unreacted
reagents). The crystal size didn't increase any significant amount.
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MrHomeScientist
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Interesting! Glad the experiment worked for you. Woelen was able to make slightly larger crystals on his site: http://woelen.homescience.net/science/chem/exps/copper_sulfi...
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