226 



Action of Chlorine upon Methyl. 



[April 28, 



the hydrochloric acid, of which half the volume of gas contained in the 

 bottles consisted. The bottles were then taken out of the liquid, placed in 

 an upright position, and the mouth provided with a doubly perforated 

 cork, into one opening of which a siphon fitted. Through this siphon a 

 hot concentrated solution of common salt slowly ran in, whilst the gas 

 thus displaced escaped by a bent tube and was condensed in a small tube 

 receiver, surrounded by a mixture of ice and salt. The liquid thus ob- 

 tained was left for some hours in contact with a piece of solid caustic 

 potash, in order to remove moisture and the last traces of hydrochloric 

 acid. Subjected to distillation, the liquid began to boil at 11° C, and the 

 boiling-point rose slowly to 30° C, at which temperature two-thirds of 

 the liquid had come over. On continuing the fractional distillation for 

 some time longer, the distillate yielded a few grammes of a colourless 

 mobile liquid, boihng between 11° and 13° C, which, as the following 

 analysis and vapour-density determinations prove, is chloride of ethyl, 

 Cg Hg CI. The boiUng-point of the liquid agrees with that of this com- 

 pound, and it possesses the strong peculiar smell and the property of 

 burning with a white, luminous, green-bordered flame, characteristic of the 

 chloride of ethyl. 

 I. Analysis: — 



(1) 0*4245 grm. of the substance gave 0*5670 grm. of carbonic acid 

 and 0-3025 of water. 



(2) 0*1810 grm. of the substance gave 0*3855 grm. of chloride of 



silver and 0*0165 grm. of metallic silver. 



Calculated for the formula Cg Hj CI. Found. 



2C 24 37*21 36*43 



5H 5 7*75 7-92 



CI 35*5 55*04 55*63 



64*5 100*00 99*98 

 II. Determination of the vapour-density according to Gay-Lussac's 

 method : — 



Weight of substance employed 0*0893 grm. 



Temperature of air 8° C. 



Height of barometer 739 millims. 



(1) Temperature of vapour 50° C. 



Volume of vapour 46*2 cub. centims. 



Difference of level 140*5 millims. 



Vapour-density calculated from these numbers .... 2*245. 



(2) Temperature of vapour 70° C. 



Volume of vapour 48*2 cub. centims. 



Difference of level 130*0 millims. 



Vapour-density calculated .... 2*244. 



(3) Temperature of vapour 80° C. 



Volume of vapour 49*45 cub. centims. 



Difference of level 125*0 millims. 



