284 The Philippine Journal of Science 1923 



of each of the oils, before hydrogenation, was determined on 

 the fresh samples that were prepared and is recorded in the 

 tables showing the results of hydrogenation. 



RESULTS 



Both drying and nondrying Philippine oils were used in this 

 investigation. A review of the literature on these oils, giving 

 data as to" constants, general properties, and uses, as well as 

 the growth and distribution of the Philippine trees from which 

 they are obtained, is given by West and Brown. 9 



In these experiments the concentration of catalyst and time 

 of hydrogenation were varied and, consequently, the results 

 obtained show the effects of hydrogenation under various 

 conditions. 



LUMBANG OIL 



Lumbang (candle-nut) oil is obtained from the nuts of Aleu- 

 rites moluccana, which is a large tree reaching a diameter of 

 80 to 160 centimeters. It is used in the manufacture of paints 

 and varnishes. The constants and the general properties of 

 lumbang oil have been determined by various investigators. 10 



The results show that lumbang is a drying oil characterized 

 by high iodine and saponification values. 



The composition 11 of lumbang oil has been determined by 

 means of the lead-salt-ether and bromo-derivative methods. 

 The results (Table 1) show that lumbang oil contains the glyce- 

 rides of linolenic, linolic, and oleic acids and therefore has a 

 composition quite similar to linseed oil. 



Table 1. — Composition of lumbang oil. 



Linolenic glyceride 

 Linolic glyceride 

 Oleic glyceride 

 Glycerides of solid acids 



•West, A. P., and Brown, W. H., Bull. Philip. Bureau Forestry 20 

 (1920). 



"Richmond, G. F., and Rosario, M. V. del, Philip. Journ. Sci. § A 2 

 (1917) 439; Wilcox E. V., and Thompson, A. R., Press Bull. Hawaii Agr. 

 Exp. Station 39 (1913); Brill, H. C, and Agcaoili, F, Philip. Journ. Sci. 

 § A 10 (1915) 111; Aguilar, R. H., Philip. Journ. Sci. § A 12 (1917) 235 

 and 14 (1919) 275; West, A. P., and Brown, W. H., Bull. Philip. Bureau 

 Forestry 20 (1920) 121; West, A. P., and Montes, Z., Philip. Journ. Sci. 18 

 (1921) 619. 



"West, A. P., and Montes, Z., Philip. Journ. Sci. 18 (1921) 630. 



