518 W. A. Drushel — Substituted Aliphatic Acids. 



Hydrolysis at 45° 

 Time 



10 f K 



Average 



3240 



3240 



3240 



3240 



3240 



3240 



3240 



47-5 



77-0 



34-2 



46-6 



31-2 



17-6 



145 



47-8 



76-1 



34-4 



470 



30-6 



20-5 



14-7 



45-9 



75-4 



35-0 



48'3 



30-6 



19-1 



14-0 



44-9 



74-3 



35-5 



49-2 



30-4 



20-5 



13 8 



43-9 



72-9 



35-7 



48-2 



31-3 



166 



14-4 



44-4 



71-7 



34-9 



47-0 



3T3 



17'0 



14-4 



44-2 



73-6 



348 



47-9 



31-6 



17-0 



14-8 



44o 





35-2 





31-0 



16-6 





45-5 74-2 



35-0 



47-8 



31-0 



18-1 



14-4 



Table II. 



N/10 HC1. 



45°. 



Esters of unsubstituted fatty acids. — 10 S K. 



Ethyl pro- Ethyl bu- Ethyl iso- Ethyl isova- Ethyl diethyl- 



pionate tyrate butyrate lerianate acetate 



406 



236 



203 



106 



57-3 



Esters of cyanogen-substituted fatty acids. — 10 5 K. 



25°. 



Ethyl cyan- 

 propionate 

 a 



9-14 



22-7 

 45-4 



13-0 

 33-4 

 74-2 



Ethyl cyan- 

 butyrate 



a j3 



6-15 .... 



Ethyl c- Ethyl a- Ethyl a- 

 cyan-va- cyan-isova- cyan- diethyl - 

 lerianate lerianate acetate 



2-48 2-57 

 2-00 2-24 



2-24 



2-41 



14-1 

 35-0 



2-29 

 2-48 

 2-37 



20-4 



47-8 



35° 

 45° 



4-67 

 13-9 

 3T0 



Temperature coefficients. 

 25° to 35° 



35° to 45° 

 2-34 

 Mean for 10° 

 2-35 



2-97 

 2-23 

 2-60 



2-50 

 6-49 

 18-1 



2-59 



2-78 

 2-68 



6-53 



14-4 



2-53 

 2-15 

 2-34 



Ratio of velocity constants for N/10 HC1 and 25°. 

 Ethyl cyan-acetate : Ethyl acetate - 157 



Ethyl a-cyan-propionate 

 Ethyl /3-cyan-propionate 

 Ethyl a- c} r an -butyrate 

 Ethyl /3-cyan-butyrate 



Ethyl propionate - 128 



Ethyl propionate 0*180 



Ethyl bima-ate 0-118 



Ethyl butyrate 0*169 



