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Author Topic: ANethol crystals  (Read 2612 times)

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Vibrating_Lights

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ANethol crystals
« on: June 23, 2004, 07:57:00 PM »
What solvent would be CHoice for the Crystalization of anethol crystals in the freezer??

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Rhodium

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Anethole has a melting point of 21-22°C
« Reply #1 on: June 23, 2004, 08:12:00 PM »
Anethole has a melting point of 21-22°C when pure, so you should not need to use the freezer, only the fridge. I believe the reccommended recrystallization solvent is petroleum ether (or pentane/hexane), but do not use a lot of it.

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Erny

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Re: ANethol crystals
« Reply #2 on: June 23, 2004, 09:26:00 PM »
Petroleum ether works very well. Just mix anise oil with it 1 : 1, freeze, decant all the liquid from the crystalls and repeat.
80 ml of anise oil give around 50 ml of anetole.

- method proposed in the soviet patent SU1751180.
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