The PVC resin may stop a lot of the solvents from going into the water. The MEK and acetone are also soluble, but are both ketones, so saturating the resulting water/THF/MEK/acetone with bisulfite might crystallise them out leaving THF in water. You may have a hard time seperating acetone, MEK and THF ! NOTE : Must be distilled with a reducing agent, as explosive peroxides may form (see Merck Index). Tetrahydrofuran (25-40%) (BP = 66☌) SEE NOTE This looks a lot worse than distilling the DCM-containing goop that's sold as paint stripper.Īfter looking at some MDMS data for various PVC cements these seem to be the solvents used : I'm thinking that it might be worthwhile to obtain another source of THF. ![]() This is a 16 fluid oz can of a popular brand of gray PVC cement mentioned elsewhere on the Hive in other threads. Has any one got experience doing this? What did you use? Did you do anything to prevent peroxide formation? I'm thinking about distilling it straight from the can using a water bath. As Ab2 said in another thread, that if one was to use their glassware to distill this stuff, one would need all the recovered THF just to clean the flask. ![]() I've gone through the search engine, and haven't found any information on how to distill pipe cement to get the THF and the other solvents out.
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