METHYL SALICYL.\TE I. 



109 



Table IV. — The analyses of the solutions descrihcd in Tables II and III at the end 



of the reactions. 



Solution. 



Methyl alcohol. 



Salicylic acid. 



Theoret- 

 ical. 



Found. 



Theoret- 

 ical. 



Found. 



0.203 normal NaOH 



099 normal NaOH 



0.2 normal NaoCOa 



Per cent. 

 0.64 

 0.32 

 0.32 



Per cent. 

 0.67 



Per cent. 

 2.80 

 1.37 

 1.38 



Per cent. 

 2.66 

 1.41 

 1.33 



0.314 



SUIOIARY. 



It is shown that methyl salicylate (synthetic), or oil of gaultheria, 

 when used in foods and drugs, may give rise to the presence of salicylic 

 acid, first, as an impurity in the ester ; second, through its hydrolysis. 



Methods for the separation and quantitative estimation of salicylic 

 acid and methyl salicylate are described. 



The rate of saponification of methyl salicylate in solutions of sodium 

 hydroxide and carbonate are studied. 



The work in some of its other phases is being eontinue,d. 



