Vibrating_Lights (Hive Addict)
06-23-04 19:57
No 515000
       ANethol crystals     

What solvent would be CHoice for the Crystalization of anethol crystals in the freezer??
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    Rhodium
(Chief Bee)
06-23-04 20:12
No 515001
       Anethole has a melting point of 21-22°C     

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
(Earnest Bee)
06-23-04 21:26
No 515014
       Re: ANethol crystals     

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.