K. Helle, J. A. Rijks, 1. J. J. Janssen, and J. W. Schuyl Eindhoven University of Technology The Netherlands
Electrolytic Preparation of lodoform
Repeating an experiment by Lariviere aud Weber' on the preparation of iodoform we found a more simple method, which we describe shortly here. Two platinum electrodes (1.0 X 4.0 cm) are placed in a solution of potassium iodide and 2 ml acetone in 200 ml water. After an electrolysis of half an hour
Experimental Results KI eonc. =/ZOO ml
1
=0
PH 1
=
-
30 min
-Yieldin e
in
a t 25'C (i = l A ) , we found a quantity of 0.60 g iodoform, with the aswmbly given in the figure. The experimental results are given in the table. Yrom the table, we concluded that the pH of the solution a t the begiuning of the experiment ha.; no influence on the yield of iodoform. This is also according to R a m a s w a s ~ y . ~ Moreover, the yield of iodoform decreases with increasing I
