ACETO ACETIC ESTER 77 



SCHIFF, ROBERT, 1886. 



Ber. i9» 561. 



Some Molecular Volumes. — Acetoacetic Ester. 



B. P.= 180-1803. Bo= 754.5 mm. D4 = specific gravity at t" 

 compared to water at 4. — = molecular volume. 



D° = 1.0465 



D4 =1-0375 

 Df-^ =0.9880 

 Df- = 0.9644 



J)i35-5 -- 0.9029 



Vt = I.+ .ooi093oit + .00000138951^+ .oooooooi465t^, from which 

 Df = 0.8458, ^=153.34. 



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



Ber. 19, 1244-1247 ; J. Chem. Sec. 50, 689 ; Jsb. Chem. 1886, 1332 ; 

 Bull. Soc. chim. 46, 834. 



Action of Trimethylen=bromid on Sodacetoacetic Ester. 



An oil Cg H14O3 , 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 — 



CH3 



C— O— CH2 



II \ 



C — CH2 — CH2 



I 

 CO2 Co He 



