AMIDES OF THE FATTY ACIDS. 



301 



Almond Oil. 



Almond oil is readily acted upon by ammonia, and yields a large proportion 

 of the crystalline compound. This amide is very soluble in warm alcohol, and is 

 deposited from the solution in mammilated groups of crystals. It is insoluble in 

 water, and is separated from an alcoholic solution by dilution with water. It is 

 not decomposed by boiling with a solution of potassa, but fused potassa decom- 

 poses it, with the evolution of ammonia. 



It commences to fuse at 79° C, and is completely fused at 81° C. ; when allowed 

 to cool after fusion it becomes solid at 78° C, but remains semitransparent. 



The following numbers were obtained by analysis : — 



I. 



II. 



III. 



IV. 



VI. 



•2612 grammes of substance gave 

 •7303 ... of carbonic acid, and 

 •2905 ... of water. 



•2612 grammes of substance gave 

 '7340 ... of carbonic acid, and 

 •2877 ... of water. 

 •2455 grammes of substance gave 

 •6910 ... of carbonic acid. 



•2493 grammes of substance gave 

 •6970 ... of carbonic acid, and 

 •2830 ... of water. 



•2740 grammes of substance, burnt with soda lime, gave 

 •1980 ... of ammonio-chloride of platinum. 



•3090 grammes of substance, burnt with soda lime, gave 

 •2300 ... of ammonio-chloride of platinum. 



4-52 





I. 



II. 



III. 



IV. 



Carbon, 



76-25 



76.64 



76.76 



76-25 



Hydrogen, 



12-35 



12-19 



. . . 



12-61 



Nitrogen, 





Theory. 





Mean. 





^36 



216 



76-86 



76-47 





■^35 



35 



12-45 



12-38 





N 



14 



4-98 



4-59 





o 2 



16 



5-71 



6-56 



VI. 



4-67 



281 100-00 100-00 



The ammoniacal mother liquors, when concentrated, did not yield much re- 

 sinous matter ; but upon the addition of hydrochloric acid to the residue, an oil 

 separated, which was collected upon a moist filter, and washed with water. It 

 was then dissolved in ammonia, and chloride of barium was added ; the precipi- 

 tate obtained was filtered, and washed with water. I endeavoured to crystallize 

 this salt from alcohol, but as it fuses into a resinous mass under the alcohol, and 

 adheres to the sides of the vessel, it could not be satisfactorily accomplished. This 

 property corresponds to that of oleate of baryta, and the analyses of it are suffi- 

 cient to show that it was in fact this salt, although in an impure state. 



