[WAENTiG- LIQUID CHLORINE AS A SOLVENT 209 



Mcintosh] 



An examination of the freezing point curves for the complete 

 system ether-chlorine and ether-bromine shows that the compounds 

 are largely broken down in solution, i.e., the solute is not in com- 

 bination with the solvent in solution. It is impossible to fix the con- 

 stitutions of these compounds with any degree of certainty from the 

 cryoscopic measurements, and other methods must be employed 

 before this question can be definitely answered. 



It may be added that water and iodine do not change the freezing 

 point of chlorine, so that these substances are insoluble or very slowly 

 soluble in liquid chlorine. Bromine readily dissolves and raises the 

 freezing temperature. 



McGill University, 



Montreal, April, 1915. 



