3244
G. S. HAMMOND, J. N. SENAND C. E. BOOZER
the partially oxidized inhibitor. The visible absorption spectrum of one such solution was measured and the characteristic absorption maxima a t 565 and 615 mu were used to estimate the concentration of the ion. The intensity of the absorption was about 5% of what it would have been if all of the inhibitor were Dresent as the ivurster cation. Identical observations were made in an experiment in which water was added before the reaction was started. Blank experiments ivere run without initiator to determine that
[A CON?RIDUTION
FROM THE CHEMICAL
Vol. 77
the formation of the Wurster cation was not due to air oxidation. The cation was formed but only to a barely perceptible extent durina the time involved in these experiments.
Acknowledgment*-LL-e are very grateful for the generous support of this study by the B. F. Good.I ;ich CO.
min.
34 31.:? 51 43.5 21 21 35 6,i
67 45.6 23 5
nu
0.39 .35 , 2Gb ,20" 1 .OO 0.99 .98 . .jlb ,61"
,a"
,680
2i
.64 42"
,615
27.5 27 5 67
