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The Hive => Chemistry Discourse => Topic started by: Vibrating_Lights on June 23, 2004, 07:57:00 PM

Title: ANethol crystals
Post by: Vibrating_Lights on June 23, 2004, 07:57:00 PM

What solvent would be CHoice for the Crystalization of anethol crystals in the freezer??

Title: Anethole has a melting point of 21-22°C
Post by: Rhodium 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.

Title: Re: ANethol crystals
Post by: Erny 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.