Robeetson. — Distillation of Fatty Acids. 



573 



excess is caused by the presence of non-acid decomposition 

 products. Thus, in a weight W, if O be the amount of oleic 

 acid and T total acid, then T — = saturated acid; W — T = 

 non-acid portion. 



When W = T, then W = + P + S, where P and S are 

 the amounts of palmitic and stearic acid respectively. 



The experimental numbers are given in Table III. Cal- 

 culating from these results the amounts of the different con- 

 stituents, it is possible to determine the ultimate composition 

 of the various fractions. The results thus obtained are pre- 

 sented in Table IV. 



Table III. — Acid Values. 



Time. 



10 a.m. 

 12 noon 

 1.15 p.m. 

 2 p.m. 

 2.30 p.m. 

 2.45 p.m. 



2.5 p.m. 

 2.15 p.m. 

 2.25 p.m. 

 2.35 p.m. 

 2.42 p.m. 



2.5 p.m. 

 2.15 p.m. 

 2.25 p.m. 

 2.35 p.m. 

 2.42 p.m. 



Time. 



10. 



12. 



1.15. 



2. 



Oleic acid 



Palmitic acid 



Stearic acid 



Stearone and hydrocarbon 



2.30. 



2.45. 



15 







17 



33 



100 



