Decomposition of TrickU)T7mthyl8ulphonfiromid&. 323 



ignited, 0.392 grin, ignited with caustic lime yielded 1.244 grm. 

 AgCl + AgBr ; this mixture was reduced by means of a piece 

 of chemically pure zinc and hydrochloric acid; the weight of 

 silver obtained was 0.853 grm. * 



This shows 53.06 proc. CI. and 41.33 proc. Br. which corre- 

 sponds to the formula CCl 3 Br. The theory requires 53.65 proc. 

 CI., 42.28 proc. Br., and 4.07 proc. C. 



This combination must therefore be considered as Carbon- 

 trichlorbromide, and its formation takes place according to the 

 following equation : — 



(CC1 3 ) [SO./] Br = S0 2 + CCl 3 Br. 



Trichlormethylsulphonbromide. Carbontrichlorbromide. 



In smell and solubility Carbontrichlorbromide bears great 

 resemblance to tetrachloride of carbon ; it boils at 9S° C. and 

 possesses great stability ; it is not affected at ordinary tempera- 

 ture by nitric acid, potassa, and ammonia, but on boiling it 

 with an alcoholic solution of caustic potassa, decomposition 

 takes place, KBr, KCI, and K. 2 C0 3 being formed. On passing 

 it through a red-hot glass tube it is decomposed into sesqui- 

 chloride of carbon and bromine. 



I made several attempts to obtain the unknown Trichlorme- 

 thylsulphoniodide and — cyanide, but without success. , 



If Trichlormethylsulphonchloride be treated with an alcoholic 

 solution of iodide of potassium, iodine will always be set free 

 and triehlormethylsulphite of potassium formed. 



(CC1 3 ) [SO J CI + 2KI = (CC1,) [SO] KO + KCI + I a 



V A ) 



Other experiments to obtain a respective derivative of urea 



* "When G- = amount of AgCl 4- AgBr; g = weight of -ilver, x = un- 

 known quantity of chlorine, y = unknown quantity of bromine, x and y 

 are found by the following equation- : 



Ix+y=G-g 

 II 108x + 108y = g 

 30..-. 



