Estimation of Organic Nitrogen. 



403 







Table V. 











Propionamide. 



Nitrogen, 19-18^. 





Weight 

 taken 



In 

 furnace 



Tempera- 



Nitrogen 

 found 



Nitrogen 

 theory 



Error 



grm. 



hours 



ture 



grm. 



grm. 



grm. 



0-1728 



n 



180°-220° 



0-0329 



0-0331 



— 0-0002 



0-2084 



a 



180°-210° 



0-0395 



0-0399 



— 0-0004 



0-1863 



a 



u u 



0-0355 



0-0357 



— 0-0002 



0-2028 



ti 



if a 



0-0385 



0-0389 



— 0-0004 







Succinimide. 



Nitrogen, 14 



•15#. 





0-1902 



H 



180°-210° 



0-0275 



0-0269 



+ 0-0004 



0-1738 



a 



it a 



0-0254 



0-0246 



+ 0-0008 



0-1890 



a 



u a 



0-0261 



0-0266 



— 0-0005 



0-1.848 



u 



a a 



0-0262 



0-0261 



+ 0-0001 



Table VI. 

 Propionamide. Nitrogen, 19-18$. 



Weight 

 taken 

 grm. 



Cone. 

 HC1 3 

 cm 



In 

 furnace 

 hours 



Tempera- 

 ture 



Nitrogen 

 found, 

 grm. 



Nitrogen 



theory 



grm. 



Error 

 grm. 



0*1986 



1 



H 



180°-210° 



0-0379 



0-0380 



—o-oooi 



0-2257 



1 



u 



a a 



0-0423 



0-0431 



-0-0008 



0-1839 



2 



11 



a a 



0-0349 



0-0352 



— 0-0003 



0-2040 







a 



a a 



0-0392 



0-0391 



+ 0-0001 







G-lycocoll. Nitrogen, 16-47$. 







0-2008 



2 



H 



180°-210° 



0-0287 



0-0373 



— 0-0086 



0-2019 



2 



a 



a a 



0-0301 



0-0375 



— 0-0074 



0-2020 



5 



3 



ik a 



0-0361 



0-0376 



— 0-0015 



0-2045 



2 



*i 



180°-215° 



0-0379 



0-0380 



—o-oooi 



0*2022 



2 



3 



180°-220° 



0-0366 



0-0376 



—o-ooio 



0-2028 



2 



3* 



180°-230° 



0-0375 



0-0377 



— 0-0002 



amount of acid, provided an excess is used, is much less impor- 

 tant than the temperature and time used in making the decom- 

 position. 



On the whole the results obtained agree well with the theo- 

 retical amounts of nitrogen in the compounds studied except in 

 the case of cyan-acetic ester. This ester was used without spe- 

 cial purification and was known to contain a little less than the 

 theoretical amount of nitrogen, due to a slight admixture of a 

 non-nitrogenous ester. 



From the experimental results obtained the following conclu- 

 sions have been drawn : 



1. The nitrogen of aliphatic nitriles, cyanogen substituted 

 esters, amides and imides, may be quantitatively fixed as ammo- 



