Palm Oil and Cacao Butter. 189 



atomic weight of the anhydrous acid. The baryta salt was 

 prepared in the usual way by precipitatin^g an alcoholic solu- 

 tion of the soda soap with chloride of barium. 



Per cent, baryta. 



I. 0-5080 salt gave 0-150 carb. of baryta = 22-90 



II. 0-4947 „ „ 0-1462 „ „ =22-92 

 The calculated quantity is 23-39 per cent, baryta. Ihe 



atomic weight 3221, which this gives for the anhydrous acid, 

 does not differ essentially from that found by the silver salt. 



The following is the mode of preparing Palmitin, the com- 

 pound of palmitic acid and glycerine. Palm oil is to be sub- 

 jected to pressure between folds of linen, to separate the more 

 fluid portion. The solid part is to be treated six or seven 

 times with boiling spirits of wine to remove the palmitic ami 

 oleic acids, which are very soluble in that liquid. Palmitin, 

 which, on the contrary, is nearly insoluble in hot spirits of 

 wine, is to be then dissolved in hot aether and filtered, to se- 

 parate it from the impurities which accompany it, and which 

 remain on the filter. On the cooling of the solution the palmi- 

 tin is deposited in very small crystals. These are to be pressed 

 between folds of blotting-paper and recrystallized out of 

 jEther. These operations are to be repeated six or seven 

 times till the palmitin is free from every trace of olein. It is 

 then to be kept melted on the water-bath till the aether is 

 driven off". Pure palmitin melts at 120° Fahr., and when sa- 

 ponified yields palmitic acid with the ordinary melting point 

 of 140° Fahr. Palmitin is quite neutral ; on being melted and 

 not allowed to cool it does not crystallize, but forms a half 

 transparent mass like white wax, but which differs from wax 

 in being easily reducible to powder. It is almost insoluble in 

 ordinary spirits; but absolute alcohol dissolves a little of it at 

 a boiling temperature, which precipitates in white flocks on 

 the cooling of the liquid. It is soluble in aether in every 

 proportion. In its appearance and properties generally it 

 very much resembles stearin ; palm oil contains only a few 

 parts per cent, of palmitin. 



The following are the results of its analysis. 



I. 0-3235 gave 0-896 carbonic acid, and 0-3485 water. 



II. 0-3384 „ 0-9397 „ „ 0-3744 „ 



III. 0-3317 „ 0-9195 „ „ 0-3665 „ 



or per cent. 



I. II. III. 



Carbon 76-58 76-78 76-65 



Hydrogen 11-99 12-29 12-27 



Oxygen 11-43 10-93 11-08 



100-00 10000 100-00 



