TOLUENE. 275 



Dichlortoluene, C 6 H 3 C1 2 .CH 3 , liquid; boiling point, 

 lM Q .Chlorbenzyl chloride, C 6 H 4 C1.CH 2 C1, liquid ; boil- 

 ing point, 213-214. Benzol chloride (Chlorobenzol), 

 C 6 H 5 .CHC1 2 , is also formed by the action of phosphorus 

 pentachloride on oil of bitter almonds. Liquid, boil- 

 ing at 206. 



Trichlortoluene, C 6 H 2 C1 3 .CH 3 . Colorless crystals; 

 fusing point, 76; boiling point, 235. Dichlorbenzyl 

 chloride, C 6 H 3 C1 2 .CH 2 C1. Liquid, boiling at 241-. 

 Chlorbenzal chloride, C 6 H 4 C1.CHC1 2 . Liquid; boiling 

 point, 234. Benzotrichloride, C 6 H 5 .CC1 3 , is also formed 

 by heating benzoyl chloride with phosphorus pentachlo- 

 ride. Liquid; boiling point, 213-214. 



Tetrachlortoluene, C 6 HC1 4 .CH 3 ; fusing point, 91- 



92; boiling point, 271. Trichlorbenzyl chloride, 

 C 6 II 2 C1 3 .CH 2 C1. Liquid ; boiling point, 273. Dichlor- 

 benzal chloride, C 6 H 3 C1 2 .CHC1 2 . Liquid; boiling point, 

 257. ChlorbenzotricMoride,C 6 IL 4 CLCCl 3 . Liquid; boil- 

 ing point, 245. 



Pentachlortoluene, C 6 CRCH 3 ; fusing point, 218 ; 

 boiling point, 301. Tetrachlorbenzyl chloride, C 6 HCK 

 CH 2 C1. Liquid; boiling point, 296. Trichlorbenzal 

 chloride C 6 H 2 C1 3 .CHC1 2 Liquid; solidifies below 0; 

 boiling point, 280-281. Dichlorbenzotrichloride, C 6 H 3 

 CP.CCl 3 . Liquid; boiling point, 273. 



Pentachlorbenzyl chloride, C 6 CP.CH 2 C1. Fusing 



point, 103; boiling point, 325-327. Tetrachlorbenzal 



.c^or^e,C 6 H01 4 .CHCl 2 . Liquid; boiling point, 305-306. 



Trichlorbenzotrichloride, C 6 H 2 C1 3 .CC1 3 . Fusing point, 



82 ; boiling point, 307-308. 



Pentachlorbenzal chloride, C 6 C1 5 .CHC1 2 . Fusing 

 point, 109; boiling point, 334. Tetrachlorbenzotri- 

 chloride, C 6 HC1 4 .CC1 3 . Fusing point, 104; boiling 

 point, 316. 



When the attempt is made to replace the last hydro- 

 gen-atom in toluene, the molecule breaks up, and per- 

 ch lorbenzene is formed. 



