vni, a, i Gibbs and Pratt: Hydroxyl and Carboxyl 



41 



The persistence of the band heading at 1/A=3480 is much 

 greater in alkaline aqueous solutions than in the corresponding 

 alcohol solutions, a condition which points to the conclusion that 

 the hydrolysis of the sodium salt is greater in aqueous than in 

 alcoholic solutions. 



O-HYDROXYBENZYL ALCOHOL. FIG. 3 



This compound was photographed in neutral alcohol solution 

 and also in the presence of 5 equivalents of alkali. See dot and 

 dash curve and dot curve, fig. 3. The conditions existing in 

 phenol and o-cresol are also found in this compound. The portion 

 of the curve for 5 equivalents of alkali lying below log. 1.7 was 

 obtained by photographing a 1/1000 molar solution. Since this 

 concentration was obtained by diluting a 1/100 molar solution, 



Oscillation frequency (— ). 



A 



3000 32 34 36 36 4000 42 44 























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10.000 



1,000 



Fig. 3. — Dot and dash curve = o-hydroxybensyl alcohol. 

 Dot curve = o-hydroxybenxyl alcohol with 5 



equivalents of sodium ethoxide. 

 Full curve = methyl ether of salicylic acid and 



methyl ether of methyl salicylate. 

 Dash curve = methyl ether of salicylic acid 

 with 5 equivalents of sodium methoxide. 



