METHYL SALICYLATE L 107 



Table III. — Eijdrolysis of methyl salicylate with sodium carhonate — Continued. 



THIED SERIES. 



16 



15.8 



21.0 



96 



11.9 



40.5 



17 



15.65 



21.75 



141 



11.3 



43.5 



18 



15.5 



22.5 



160 



11.2 



44.0 



21 



15.25 



23.75 



168 



11.2 



44.0 



•23 



15.1 



24.0 



1S4 



11.15 



44.25 



24 



14.9 



25.5 



210 



11.0 



45.0 



40 



13.7 



31.5 



233 



10.9 



45.5 



44 



13.4 



33.0 



262 



10.88 



45.6 



48 



13.3 



33.5 



497 



10.40 



48.0 



64 



12.7 



36.5 



624 



10.2 



49.0 



72 



12. 45 



37.-75 



665 



10.13 



49.35 



88 



12.0 



40.0 



737 



10.00 



50.00 







(7 



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Fig. I. — Hydrolysis of Methyl Salicylate. 



The rate of hydrolysis with sodiiun carbonate is a smooth curve, the break in 

 the diagram being due to the cliange of scale. 



The curves shown in fig. 1 are constructed from the above tables. It 

 is to be noted that the hydrolysis of the ester with sodium hydroxide goes 

 to completion; that is, to the point where all of the hydroxide has been 

 used in the reaction, or at least it goes very nearly to completion in about 

 twenty-four hours. With sodium carlionate, equilibrium, for all practical 

 purposes, is reached in about one month, at the point where all of the 



