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Author: Subject: Help cleaning some calcium carbide
Wiki Master

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[*] posted on 4-3-2016 at 11:57
Help cleaning some calcium carbide

I got some calcium carbide from a store (haven't seen it on shelves in ages), in the form of groundhog/mole repellent. It's technical grade, gray-black in color, but it also contains 2-undecanone and citriodiol and probably other stuff not mentioned on the label. Since I don't want the repellents interfering in my reactions, what could I use to remove them?
I'm looking for something OTC here, BTW.

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International Hazard

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[*] posted on 4-3-2016 at 13:22

Pretty much any anhydrous organic solvent can do the job: acetone, ethyl acetate, toluene, petroleum ether. Alcohols react with CaC2 yielding calcium alcoxides.
Calcium phosphides will still remain in the powder, because it is just as insoluble as calcium carbide.
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[*] posted on 4-3-2016 at 13:44

I'd grind it fairly fine before proceeding. I got some from Germany and it is pea gravel sized chunks. I doubt that the solvents would do a good job penetrating the chunks.

Enjoying second childhood with REAL chemistry set.
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