ACETO ACETIC ESTER 77 



SCHIFF, ROBERT, 1886. 



Ber. I9 561. 

 Some Molecular Volumes. Acetoacetic Ester. 



B. P. = 180-1803. 60=754.5 mm. Dj = specific gravity at t 

 compared to water at 4 = molecular volume. 



D =1.0465 



D 4 8 =1.0375 

 Df' 8 =0.9880 



DJ- 2 = 0.9644 



D'35-5 _ 0.9029 



Vt = i.-h .ooi093oit -f .000001 38951* -f .0000000 i465t 3 , from which 

 Df = 0.8458, ^=153.34. 



PERKIN, Jr., W. H., 1886. 



Ber. 19* 1244-1247 ; J. Chem. Soc. 5 689 ; Jsb. Chem. 1886, 1332 ; 

 Bull. Soc. chim. 46, 834. 



Action of Trimethylen-bromid on Sodacetoacetic Ester. 



An oil C 9 H I4 O 3 , boiling at 223 is obtained which cannot be an 

 aceto-tetramethylen carboxylic ester because its properties when com- 

 pared to the acetotrimethylen carboxylic ester and to the tetramethylen 

 dicarboxylic ester are too irregular and because it will not react with 

 phenylhydrazin. The author gives it the formula 



CH 3 



C O CH 2 



II 



C CH 2 -CH 2 



C0 2 C 2 H 5 



