120 W. A. Dvuskei — Preparation and Hydrolysis of 



Table I — Ethyl Hydracrylate. 

 Hydrolysis in Decinormal Hydrochloric Acid. 



Time of reaction in minutes 

 Velocity constants 



Averages. 16*3 



Averages of duplicate series 



25° 



35° 



45° 



7240 



2840 



1390 



10 5 K 



io & K 



10 5 K 



16-6 



39-9 



98-0 



16-6 



39-8 



98*6 



16-4 



41-4 



100*3 



16-0 



40-4 



97-9 



16-1 



40-5 



986 



16-6 



39-3 



98-9 



15-8 



41-0 



97*3 



16-3 



40-4 



98-5 



16-2 



40*9 



99-0 



Table II — Oxypropionic Esters : Summary. 



Hydrolysis in Decinormal Hydrochloric Acid. 



35" 



45' 



Ethyl 

 propionate 



Ethyl 

 lactate 



Ethyl 

 hydracrylate 



Ethyl 

 glycerate 



10 & K 

 j 71-2 

 \ 71-6* 



10 5 K 

 76-1 

 74-4* 



]0 5 K 

 16-3 



16-2 



10 5 K 

 18-5* 



j 177-1 

 \ 179-0* 



177-5 



179-0* 



40-4 

 40-9 



43-6* 



j 405-3 

 1 406-0* 



396-6 

 3960* 



98-5 

 99*0 



101-0* 



* Determined by Dean, this Journal, xxxv, 486, 1911 



Table III— Alkaline Hydrolysis in N/80 Sodium Hydroxide. 



Temper- 

 ature 

 Time 



Constant 



Ethyl Hydracrylate 



0° 25° 



30 min. 12 min. 



K K 



Summary 

 Ethyl Ethyl Ethyl 

 propionate lactate hydra- 

 crylate 

 K K K 



Ethyl 



glv- 

 cerate 

 K 





1-86 



10-6 



0° 1-16* 14-6* 



1-83 



9-02* 





1-63 



ll'O 



25° 5-94* 63-7* 



10-2 



67-3* 





1-93 



10-6 











1-81 



9-7 











1-85 



1-87 

 1-85 



10-8 

 9-5 

 9-0 



* Taken from Dean's 1 

 this Journal, xxxv, 608. 



tables, 





Averages 1-83 



10-2 





