IS, 6 
West and Montes: Lumbang Oil 
629 
Table. 6. — Analysis of liquid unsaturated acids of lumbang oil. 
Summary of experiments I and II. 
Acid. 
Experi- 
ment I. 
Experi- 
ment II. 
Mean. 1 
Linolenic 
Per cent. 
7. 11 
34.48 
69.78 
101.32 
Per cent. 
6.89 
84. 46 
67.44 
98.29 
| 
Per cent, i 
6.76 
34.44 | 
68.61 I 
99.80 
Linolic . _ . 
Oleic 
Total _ 
As previously stated, a determination of the iodine value of 
the mixed liquid acids separated by the lead-salt-ether method 
gave us a value of 135.8. A mixture of linolenic, linolic, and 
oleic acids in the proportions given in the table above would have 
a calculated iodine value of 133.8. The calculated iodine value 
of the liquid acids therefore agrees fairly well with the observed 
value. 
The mean percentages of linolenic, linolic, and oleic acids in 
the mixture of unsaturated acids, as given in Table 6, were 
calculated into percentages of glycerides in the original oil. The 
results are recorded in Table 7. In calculating these results 
we used the average data obtained by the lead-salt-ether method, 
which showed that lumbang oil when decomposed yields 93.04 
per cent of liquid unsaturated acids. 
Table 7. — Calculation of unsaturated acids to glycerides in lumbang oil. 
Acid. 
Mixture 
of un- 
saturated 
acids. 
Original 
oil. 
Glycer- 
ides in 
original 
oil. 
Linolenic 
Per cent. 
6.76 
34.44 
68. 61 
99.80 
Per cent. 
6. 28 
32.04 
64.63 
92.85 
Per cent. 
6. 66 
83.48 
66.98 
97.02 
Linolic 
Oleic 
Total 
The average results we obtained by the lead-salt-ether method 
showed that lumbang oil can be decomposed into 93.04 per cent 
liquid unsaturated acids and 2.73 per cent solid acids. The 
liquid acids separated by the bromo-derivative method and 
calculated on the basis of the original oil gave a total percentage 
of 92.85 (Table 7), which agrees very closely with the figure 
93.03 obtained by the lead-salt-ether method. 
