6 THE ROYAL SOCIETY OF CANADA 



100 grms. of absolute alcohol dissolves 

 0-64 grms. at 0°C. 

 1-31 grms. at 7-4°. 

 2-10 grms. at 16°. 

 4-17 grms. at 25°. 

 10-61 grms. at 29°C. 



Analysis for stearic acid gave 



Theory I. 



Stearic acid 86-58 86 • - 34 



Glycol Dipalmitate [C2H4(Ci6H 3102)2] is a white solid with a 

 similar crystalline habit to the distearate. It melts at 68 -70°. 

 sharply and has a refractive index of 1-4378 at the melting point. 

 The fused ester has a specific gravity of 0-8594 at 77-9° C. It is 

 more soluble in alcohol and in ether than the distearate. 



100 grms. of absolute alcohol dissolves 



0-018 grms. at 0°C. 

 0-087 grms. at 25°. 

 0-109 grms. at 29°. 

 0-31 grms. at 38°. 



Combustions gave the following results: 



C. H, 



Theory 75-77% 12-36% 



Determined 1 75-30 12-27 



II 75-30 12-33 



Analysis for palmitic acid gave 



Theory I. II. 



Palmitic acid ; 95-16%; 94-93%, 94-96% 



Glycol Monopalmitate. C2H4OHC16H31O2 is a white solid 

 with similar crystalline habit to the dipalmitate. It melts sharply 

 at 51 -5°C. and the liquid has a refractive index of 1-4411 at the melt- 

 ing point. The fused ester, has a specific gravity of - 8786 at 60 • 5 ° C. 

 It is much more soluble than either the dipalmitate or the monostear- 

 ate. 



