ETHYL ALCOHOL 75 



the alcohol is dehydrated over quicklime to which a little 

 barium oxide has been added, complete dehydration is marked 

 by the formation of a yellow colour due to the production of 

 barium ethylate, which can only be formed in the absence of 

 any trace of moisture. 



A delicate test for the detection of traces of moisture in 

 alcohol consists in adding a few drops of the sample to a 

 solution of liquid parafhn in anhydrous chloroform ; if there 

 is any moisture present, a turbidity will be at once produced. 



