[MAFII]

Hello everybody,

I need some help.  I have a THF Still/Ketyl radical.  I started it yesterday and it's not going correctly.  Last I checked, it was white.  I used a new bottle of THF.  Here's my formulation:

THF = 1.5 L.
Benzophenone = 15g
Sodium = ~3.0 g

I wish I had the money for a solvent purification system and not have to worry about distilling this stuff, but I'm not there yet. 

Can Anybody tell me what I am doing wrong.

Thanks!

[DrCMS]

From memory more sodium less benzophenone.

[alexanderdundua]

Make sure this method of purification is suitable.
This method is widely used with benzene or toluene, but not with THF as I remember.

[azmanam]

yes, this is a fine (albeit dangerous) was to dry THF.

http://www.chemistry.msu.edu/Safety/safety_sop_01.asp