102 



PHILIPPINE RESINS, GUMS, AND OILS 



tent. In compiling these results, unusual analyses representing 

 small quantities of either exceedingly good or poor copra have 

 not been included. These exceptional samples have shown a 

 percentage of oil as high as 71, or as low as 57.5. 



Table 9. — Analysis of copra arid copra cake. 



[Compiled by Division of Organic Chemistry, Bureau of Science.] 



Coconut oil in temperate climates, at ordinary temperatures, is 

 a solid fat, but in tropical countries it is usually a thick liquid. 

 The high-grade oil is nearly colorless, has a bland taste, and the 

 peculiar odor of coconuts. It consists largely of the glycerol 

 esters of lauric and myristic acids and contains also a number 

 of other fats which are the glycerol esters of still other fatty 

 acids, such as caproic, capryllic, capric, and oleic. The exact 

 composition of coconut oil is somewhat uncertain. 



The physical and chemical constants of the oil obtained from 

 different localities are given by various authorities as follows: 



o .« ., ri5.5° 0.9259 



Specific gravity|^g„ ^^^^^ 



Solidifying point „ 15.7-23 



Melting point 23-25 



Saponification value 255-260 



Iodine value 8-9.5 



Reichert value , 3.5-3.7 



Reichert-Meissl value 6.7-7.5 



Hehner value 88.6-90.5 



Polenske value 16.8 



Refractive index, 60° 1.441 



Butyro refractometer 15.5° 49.1 



Viscosity (seconds at 140°F.) 63.9-64.7 



