[MAFII]

Hi,  I'm new to the forum.  I would like to ask if anybody knows of a way to purify DCC.  I have been gifted 2 older bottles (500g) of DCC and if it's possible, I would like to purify it.  The DCC is hard and requires chiseling to collect it.

Thank you for any help you can give.

Marvin

[DaveD]

I've never purified DCC - but I do know it is a sensitizer.  You should wear appropriate protection (gloves, lab coat) and handle the material in a fume hood.
As I recall the DCC I used was always a solid mass that had to be chiseled out of the bottle.  Have you checked its purity to know that it needs purification?

[sashikanth]

DCC contains DCU as an impurity. So dissolve DCC in DCM and filter the solution becoz DCU will not dissolve In DCM, then filterate distill off completely under reduced pressure.

[kiwi]

DCC has a relatively low melting point (34 deg C), and i've heard of DCC being purified by vacuum distillation (according to wikipedia, bp. 122 deg C/atm). If you just want to purify a little (<5g per run) as required, i'd use a kugehlrohr oven. they excel at this sort of thing.