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Topic: Water separation from DMSO  (Read 11360 times)

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Offline diccup

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Water separation from DMSO
« on: April 23, 2009, 12:29:01 AM »
I tried to remove water from DMSO.
I want to use sulfuric acid this time. As far as I know, this acid is a good drying agent.
I am afraid that this can react with DMSO or create another impurity from it.
If anyone has any idea, please help me.

Thank you so much.
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Offline sjb

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Re: Water separation from DMSO
« Reply #1 on: April 23, 2009, 05:05:18 AM »
Typically you dry DMSO by distilling over something like calcium hydride - what sort of levels of water can you tolerate in your reaction? Is Perrin and Armaregno of any use? http://www.amazon.co.uk/Purification-Laboratory-Chemicals-W-L-F-Armarego/dp/0750675713/ref=ed_oe_p
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Offline diccup

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Re: Water separation from DMSO
« Reply #2 on: April 23, 2009, 08:32:33 PM »
Thank you so much for the information,
I will go to school tomorrow, I will look for it.
I really appreciate your help.

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Offline g-bones

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Re: Water separation from DMSO
« Reply #3 on: April 23, 2009, 11:19:58 PM »
if you need the reaction dry, why not run it over molecular sieves?
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Offline diccup

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Re: Water separation from DMSO
« Reply #4 on: April 24, 2009, 12:04:40 AM »
Thanks,
I did remove water through molecular sieve, but It does not remove D2O in DMSO.
So, I want to remove D2O than H2O in DMSO by drying agent. 

I try to use CaH2 this time.
When CaH2 reacts with D2O, which one is evaporated D2, H2?

Thank you so much again,
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