168 UNIVERSITY OF COLORADO STUDIES 



Acid Determination. 



.1784 grms. substance after boiling with water required 10.4 c. c. of 

 a .1136 N. Ba(0H)2 solution. 



Computed : Found : 



C^oHi.N^S^, 4HNO3=42.00%. 41.72%. 



Nitrogen Determination. 



.1592 grms. substance gave 20.1 c. c. N. at 736 m. m. and 18°. 



Computed : Found : 



C,H,NA,4HN0„ 



N = 14.00%. N =14.11%. 



SuLPHUKic Acid Salt. 



The base was dissolved in hot sulphuric acid, (2 parts water to 

 1 part acid). From this solution on cooling the salt crystallized out. 



Acid Determination. 

 a. Red Modification. 

 .1634 grms. substance after boiling with water required for neutraliza- 

 tion 10 c. c. of a .1136 N. Ba(0H)2 solution. 



Computed: Found: 



C,„H,N,S„ 2H,S0, 2H,0, 



H2SO,=33.79%. 34.05%. 



b. Yellow Modification. 

 .2645 grms. substance after boiling with water required for neutrali- 

 zation 17.4 c. c. of a .1136 N. Ba(0H)2 solution. 

 Computed: Found: 



^20^16^282, 21X280^, 

 H2SO,=36.03%. 36 61%. 



In spite of the fact that the yellow salt was most carefully ana- 

 lyzed, it was not possible to obtain results which agreed closer than 

 about .6% with what theory required. This has the following cause: 

 The red variety can not be entirely freed from a small amount of 



