166 UNIVERSITY OF COLORADO STUDIES 



heated on the oil bath at 150° for four to five hours, a reflex con- 

 denser being used. After cooling, the flask was broken, the dark 

 brown solid product was powdered in a mortar and treated with 

 hydrochloric acid on the water bath until the resultincr liquid, after 

 repeated treatment, showed only a slight brown color. It is best to 

 use a large flask for this, otherwise a large portion of the solution 

 may be lost by the foaming up of the acid, due to the presence of an 

 excess of SjClj. After the solution thus obtained had been boiled 

 some minutes with animal charcoal, it was filtered and then treated 

 with a current of steam. The hydrochloric acid salt of the new base 

 crystallizes out on cooling. It is necessary to treat the solution with 

 steam several times in order to obtain the greatest possible amount 

 of the salt. The salt is then filtered, using the suction pump, and 

 afterwards boiled a few minutes with water. It is thus decomposed 

 into acid and base. The base can be obtained pure by dissolving it 

 in acetic acid, heating with animal charcoal, and twice recrystallizing. 

 It crystallizes in small white needles having a melting point of 316°. 

 They dissolve only in mineral acids, in boiling acetic acid, and in 

 boiling xylene. 



Out of the original filtrate, it is possible to obtain only slight 

 traces of chlorine substitution products by means of distillation with 

 steam. ^ 



Carbon and Hydrogen Determination. 



.1717 grms. substance gave .4359 grms. COj and .0753 grms. H2O. 



Computed: Found: 



C=68.98%. 69.25%. 



H=4.60%. 4.91%. 



Sulphur Determination. 



.1803 grms. substance gave .2469 grms. BaSO^. 



Computed: Found: 



S:=18.40%. 18.80%. 



