Sciencemadness Discussion Board

a solubility question

DubaiAmateurRocketry - 19-12-2013 at 12:37

I wanted to use Magnesium Sulfate Anhydrous, MgSO4, to absorb any moisture in my reaction. However I would like to filter the dessicant. The solvent im using is the popular diemthylformamide, DMF, I want to use a dessicant, best if least toxic, that would take water out of my DMF, while not dissolving in DMF in both its hydrated or anhydrous form, so that I could shake it for few mintues and filter my dried DMF :)

So basically, a dessicant that does not dissolve in DMF any how, so i can just filter it off after it takes any water.

I heard Magnesium sulfate is soluable(im not sure) in DMF, so I cant use it :(

[Edited on 19-12-2013 by DubaiAmateurRocketry]

DraconicAcid - 19-12-2013 at 12:39

Calcium sulphate.

DubaiAmateurRocketry - 19-12-2013 at 12:41

Quote: Originally posted by DraconicAcid  
Calcium sulphate.


Thanks so much, can I have the source where you found that? :)

Paddywhacker - 19-12-2013 at 13:05

You are not much of a chemist, dubai. Nor do you seem competent with using Google. Don't get into water above your depth.

The calcium sulphate that you need is plaster of paris, sold at hardware, home renovation, or handyman stores.