180 



The Philippine Journal of Science 



1918 



THE ALKALI SALTS OF THE TWO PHTHALOXIMES 



The profound changes that take place in phthaloxime on 

 the addition of alkali are manifested in the absorption spectra 

 by the appearance of a broad absorption band extending from 



about ± = 1800 



to 2860, and heading at 

 sorption band of the oximes heading at 



1 

 X 



1 



A 



2300. The ab- 

 = 3400 decreases 



regularly with increasing concentrations of alkali, and practically 

 disappears when the amount of alkali is sufficiently great to 

 effect the complete transformation into the red salt. These dif- 

 ferences with various concentrations of alkali are shown in fig. 2. 



Oscillation frequencies. 

 2000 22 24 26 28 3000 32 34 36 38 4000 42 



44 A6 



:4.Q 



°3.8 



I 3 



<L) J< 



I 



S 



33: 



•5 2.6 



52- 



.2 



;2. 



^2.0 



«1.8 



1.4 



1.2 



































1 

 16 

























j, \ 





"■...« 

























A 



V • 



1 

 ^8 . 



r^° 























*> 



^ vs 



1 



























\ 







/' j 





















"A 



'•. 



\2 



























•\ 



| , 



























r 



































































































































































































10,000 



1.000 



100 I 



Fig. 2. Full ourves = white phthaloxime with 1/16, 1/8, 1/4, 1/2, and 1 equivalent of sodium 

 ethoxide. 

 Dot curves = yellow phthaloxime with corresponding alkali. 



Description of fig. 2. — In order to avoid confusion arising from 

 the large number of lines, the curves with one-sixteenth, one- 

 eighth, and one-quarter molecular equivalents of alkali are not 



