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8. Discard the water top layer.
9. Put again in the reactor the oil top layer.
how many layers will there be? the top was discarded water and then ?
9. Put again in the reactor the oil top layer.
how many layers will there be? the top was discarded water and then ?
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I saw that, too. That's a typo. There should just be two layers. I'd expect the oil layer to fall to the bottom. Separate the top, aquas layer, and discard. Keep the bottom oil layer for the next step. Then, later, if using DCM, your end product will be in the non-aquas bottom DCM layer. If you substitute Toluene or Diethyl Ether for DCM (like someone else asked about doing), your product will be in the non-aquas upper layer. DCM, down. Toluene and Diethyl Ether, up. I'd suggest you stick with DCM because it can be separated using low heat unlike Toluene, and doesn't pose quite the same fire hazard that DE does. It is a carcinogen, though, and *does have a low flash point*. Use a well ventilated space, and collect in a chilled vessel for reuse.