maldi-tof
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Phenol crystals
Hi,
Recently, I have distilled some phenol in order to purify it, and also see how my new rotary evaporator works.
Aside of the pink colour of the distilled phenol (possible oxidation I've read), what surprised me is that I expected some crystals after
solidification, but what I obtained is a mass or block of phenol.
Phenol I used as raw material has an aspect of beautiful colorless crystals (comercial name is Crystallyzed phenol), but I haven't been able to obtain
it in that kind of form.
Any ideas how to obtain phenol crystals after distillation? I should say that it is one of my first organic projects of my own...
Thank you!
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UC235
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If it cools quickly, it won't form any sort of crystals. If cooled slowly, you should get at least some attractive needles on top. Just crush it and
store it. It's all the same. Trying to manipulate it further will just cost recovery. It will eventually sublime into nice crystals in the bottle.
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maldi-tof
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I'll try cooling It down slowly.
Thanks!!
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Tsjerk
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It melts at 41, shouldn't you want a solid? I would expect a solid chunk of whitish solid in the receiver. The pink is oxidation indeed. Phenols and
anilines are prone to oxidation.
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maldi-tof
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Quote: Originally posted by Tsjerk  | | It melts at 41, shouldn't you want a solid? I would expect a solid chunk of whitish solid in the receiver. The pink is oxidation indeed. Phenols and
anilines are prone to oxidation. |
Yes, that's what I obtained in the receiver, something not close to be crystalline.
That's my question, how to obtain crystals in the receiver directly from the distillation...
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Abromination
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| Quote: Originally posted by maldi-tof | | Quote: Originally posted by Tsjerk | | It melts at 41, shouldn't you want a solid? I would expect a solid chunk of whitish solid in the receiver. The pink is oxidation indeed. Phenols and
anilines are prone to oxidation. |
Yes, that's what I obtained in the receiver, something not close to be crystalline.
That's my question, how to obtain crystals in the receiver directly from the distillation... |
You aren't going to get crystals in any case. Its not a recrystallization process, its a pure substance. It isn’t going to leave you filterable
crystals in a liquid, distilled phenol is all the same thing and will form a solid mass no matter what.
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