Table 3: IR absorption spectral frequencies of copper soaps derived from untreated and treated oils.

Assignments	CSe	CSo	CSe15	CSo15	CSe60	CSo60
CH3 andCH2, C-H Antisym. Stretching	2975-2953	2975-2960	2970	2627	2920	2926
CH3 andCH2, C-H Sym. Stretching	2855-2840	2850-2840	2860	2855	2850	2854
COO-, C-O Antisym. Stretching	1590	1580	1595	1590	1590	1590
CH2 Deformation	1465	1465	1460	1460	1465	1461
COO-, C-O Sym. Stretching.	1375	1385	1390	1418	1415	1417
CH2 Twisting and Wagging	1310	1310	1320	1315	1320	1315
CH3 Rocking	1170	1150	1172	1169	1170	1173
CH2 Rocking	730	725	725	723	720	723
M-O Stretching	670	669	670	669	665	669