OF ARTS AND SCIENCES. 255 



1, 2, 3, 4, 6, which leads to the constitution of our metabromtrinitro- 

 toluol given above. 



Anilidotrimtrotoluol, C 6 HCH 3 (C G H 3 NH) (N0 2 ) 3 . 



This substance was prepared by treating metabromtrinitrotoluol 

 with aniline in the proportion of two molecules of the base to one of 

 the nitro compound ; the action is violent, accompanied with consider- 

 able evolution of heat, and the product was easily purified by crystal- 

 lization from a mixture of alcohol and benzol, until it showed the 

 constant melting point 151°, when it was dried at 120°, and analyzed 

 with the following results : — 



I. 0.2804 gr. of the substance gave on combustion 0.5031 gr. of 



carbonic dioxide and 0.0936 gr. of water. 

 II. 0.2777 gr. of the substance gave 43.2 c.c. of nitrogen at a tem- 

 perature of 27°. 5 and a pressure of 772 mm. 



Found. 



II. 



17.41 



Properties. — The metanilidotrinitrotoluol crystallizes from a mix- 

 ture of alcohol and benzol in well developed shining yellow plate's, 

 which melt at 151°. The substance is insoluble in water or ligroine ; 

 sparingly soluble in ethyl or methyl alcohol ; soluble in ether, chloro- 

 form, benzol, carbonic disulphide, glacial acetic acid, or acetone. The 

 most convenient solvent for it is a mixture of five parts of alcohol with 

 one of benzol. Aqueous sodic hydrate dissolves it with a red color, 

 and hydrochloric acid throws down from this solution the original sub- 

 stance apparently unaltered. Strong sulphuric or strong nitric acid 

 dissolves it, but strong hydrochloric acid does not. 



The constitution of this substance is CH 3 , N0 2 , C 6 H S NII, NO,,, N0 2 , 

 1, 2, 3, 4, 6, as is shown by its preparation from the metabromtrinitro- 

 toluol, the constitution of which has been determined, as given earlier 

 in this paper. 



