258 



III, CHEMISTRY OF NEUTRAL FATS 



patterns indicative of a chain length etiuivalent to that of four fatty acids. 

 Lutton^^^ has no explanation for this interesting phenomenon. 



A comprehensive study has recently been reported by Lutton, Jackson, 

 and Quimby"^ of the various mixed triglycerides of palmitic (P) and stearic 



Fig. 10. Tlic tilt form of symmetrical diacid tri- 

 glycerides composed of saturated acids having a "tun- 

 ing fork" arrangement and a double chain length 

 structure."' 



*j^KH 



Fig. 11. The projected and tilt forms of symmetrical diacid triglycer- 

 ides composed of saturated acids having a "tuning-fork" arrangement 

 and a triple chain length structure."' 



stearyl 



sfeoryl 



Fig. 12. The jjrojccted form 

 of sjanmctrical oleodistearin.'" 



Fig. 13. The unsymmetrical or 

 "chair" arrangement of uns3'm- 

 metrical diacid triglycerides."' 



(S) acids. Marked differences were observed in the properties of the four 

 compounds, two of which were symmetrical, i.e., PSP and SPS, and two of 

 which were unsymmetrical, namely, SPP and PSS. The results of Lutton 

 and co-workers^'* based on these triglycerides differed in a number of re- 

 spects from the earlier report of Clarkson and Malkin.^*^ Thus, the more 



"« E. S. Lutton, F. L. Jackson, and 0. T. Quiml)y, ./. -4m. Chem. Soc, 70, 2441-2445 

 (1948). 



