826 



Composition of the mixture in % S. 



40 



60 



3. The equilibrium Sy'^Sr. in solutions in toluene. 



From the solubility of riiombic sulphur in toluene, after the solu- 

 tion has been heated, the quantity of S-jz that is present in the 

 solution can be calculated. Thus we know the equilibrium -Srr^^S; in 

 a solution of given concentration at a given temperature. 



When we call the solubility of rhombic sulphur at 0° S, the 

 *ST-content of the solution is given by: 



,S. = 0.68 (5 — 0.92) 

 (4th communication). In this way we find, in case of equilibrium, 

 the quantities »S;r and »S, present, which are given in table II. 



TABLE II. 



To facilitate a comparison with the values of sulphur chloride, these 

 values are expressed in atom percentages. 



