278 TOLUENE. 



Benzylamine, C 6 H 5 .CH 2 .^H 2 . Is produced by the 

 action of nascent hydrogen (zinc and sulphuric acid) 

 on benzonitrile (p. 256) ; and in small quantity, together 

 with di- and tribenzylamine, by heating benzyl chlo- 

 ride with alcoholic ammonia at 100. Clear liquid; 

 boiling point, 183. Miscible with water, alcohol, and 

 ether in all proportions. From its aqueous solution it 

 is separated by caustic potassa. Attracts carbonic anhy- 

 dride from the Siir.Dibenzylamine (C 6 H 5 .CH 2 ) 2 jNiH. 

 Colorless, thick oil, insoluble in water, easily soluble in 

 ether and alcohol. Tribenzylamine (C 6 H^CH 2 ) 3 K Col- 

 orless laminse or needles. Fusing point, 91. Insolu- 

 ble in water, difficultly soluble in cold alcohol, easily 

 in hot alcohol and in ether. The hydrochlorate is 

 decomposed when heated in a current of dry hydro- 

 chloric acid gas, yielding benzyl chloride and dibenzyl- 

 amine hydrochlorate. 



Benzylphosphine, C 6 H 5 .CH 2 .PH 2 . Two molecules 

 benzylchloride, two molecules phosphonium iodide, and 

 one molecule zinc oxide are heated together for six 

 hours at 160, and the product then distilled with 

 water vapor. Benzylphosphine and dibenzylphosphine 

 pass over. By means of distillation the benzylphos- 

 phine can be prepared from the mixture in a pure 

 condition. Clear liquid, insoluble in water, easily 

 soluble in ether and alcohol ; boiling point, 180 ; be- 

 comes oxidized in contact with the air, and gives off 

 fumes. Dibenzylphosphine (C 6 H 5 .CH 2 ) 2 PH. Crystal- 

 lized from alcohol, it forms stellate or fascicular 

 needles, of a high lustre ; insoluble in water, difficultly 

 in cold alcohol, more easily in boiling alcohol ; fusing 

 point, 205. 



Diamidotoluene (Toluylenediamine), C 6 H 3 (^H 2 ) 2 

 CH 3 , is produced by the reduction of dinitrotoluene. 

 Long needles ; fusing point, 99 ; boiling point, 280. 

 Difficultly soluble in cold water, easily in hot water, in 

 alcohol, and ether. 



Anilin-dyes. Rosanilin, C 20 H 19 ^ 3 = C 6 H 4 (C 7 H 6 ) 2 

 IS" 3 H 3 . The salts of rosanilin are produced by heating 



