What is the DMSO drying method?

Sorry, it seems to misunderstand the original poster, thinking that it is going to remove the DMSO in the sample!sorry!

If your sample is stable, directly decompress and dry

It is said that the solution of the solution with a sample can be added to the anti -phase column. First, the DMSO is eluted with pure water, and then the sample is eluted with a methanol to get a sample without DMSO!The original poster may wish to try it!

Your problem is to remove the small amount of water in DMSO:
Molecular sieves that can be dried with high temperature drying for long -term drying to dry.Then decompress and distille under nitrogen, collect 76 ° C/1600Pa (12mmHg) distillation points.During distillation, the temperature should not be higher than 90 ° C, otherwise the dismissal reaction will generate di methallar and diosulfonal ether.Calcium oxide, calcium hydroxide, oxide or water -free sulfate is dried, and then decompressed and distilled under nitrogen flow.Dry DMSO is stored with molecular sieve.

The drying speed is very slow, it is recommended to dry the nitrogen

You can refer to the methods in these two links
http://wenku.baidu.com/view/e859837a1711cc7931b71657.html
http://muchong.com/201112/3961238.html

Drying with molecular sieve is indeed a method for many people.If you use a small amount, you can buy a low water content DMSO.