186 Drs. Muspratt and Hofmann on Tohiidine. 



Composition of Toluidine. 



The perfect analogy subsisting between benzole and toluole, 

 so evident in every point of view, left in our minds no doubt 

 as to the composition of the new base. We have notwith- 

 standing submitted it to elementary analysis, but have omitted 

 the determination of the nitrogen. 



By a combustion with oxide of copper, 0*1955 grm. tolui- 

 dine gave 0'5630 grm. carbonic acid and 0*1515 grm. water. 



Centesimally, — 



Carbon .... 78*53 

 Hydrogen . . . 8*61 

 Agreeing with the formula C^^ Hg N; which we append in 



a calculated form. 



Theory. Found. 



14 equiv. Carbon . 1050*00 78*38 

 9 ... Hydrogen 212*50 8*39 



I ... Nitrogen . 177*00 13*23 

 1339*5 100*00 



In order to control this formula, we prepared the double 

 compound of the base with chloride of platinum. On igniting 

 this fine crystalline compound, 0*4337 grm. of it gave 0*1372 

 grm. SSI 31*36 platinum. 



Atomic weight from experiment 1359*50 

 Atomic weight theoretical . . 1339*50 

 The formation of toluidine from nitrotoluide is perfectly 

 analogous to that of aniline from nitrobenzide : 



C,4 H7 NO4 + 4 HS=Ci4 Hg N + 4 HO4-6 S 



. , , ^ V ^ ; 



Nitrotoluide. Toluidine. 



Properties of Toluidine. 



The new base, as previously stated, is obtained in the form 

 of a colourless crystalline mass. From a hot saturated solu- 

 tion in aqueous alcohol it shoots, upon cooling, into large 

 broad plates, which fill the whole menstruum. It dissolves in 

 asther, pyroxylic spirit, acetone, sulphuret of carbon, the fatty 

 and essential oils with the same facility as in alcohol. Water 

 also dissolves a small quantity of toluidine, particularly with 

 heat, and after some time it separates in extremely small leafy 

 crystals, exhibiting a splendid iridescence. On agitating with 

 aether the base is extracted from the water. 



Toluidine possesses a vinous aromatic smell and burning 

 taste. The remarkable correspondence as to smell and taste be- 

 tween benzole and toluole, nitrobenzide and nitrotoluide, is also 

 recognised between toluidine and aniline. These bases could 



