112 The Philippine Jommal of Science i9i4 



(corrected). The compound slowly becomes tinged with pinkish 

 yellow on the surface upon standing in a desiccator over sul- 

 phuric acid. It agreed in all its properties with the description 

 given by Reissert and Holle. 



The alcohol solution fluoresced greenish in the light of the 

 arc, and gave an absorption spectrum with a well-marked band 



heading at - = 3150 and a more refrangible band in the benzene 



A 



region at ^ = 3840. 



The addition of alkali turned the alcohol solution canary 

 yellow and shifted the absorption band to - = 2900, at the 



A 



same time greatly reducing the persistence of selective absorp- 

 tion at Y = 3840. 



A 



Phthalanil oxime in concentrated sulphuric acid was also 

 yellow, and gave a spectrum showing general absorption in 



the visible region with a rapid increase between - = 2500 and 



1 ^ 



-=2700. The remainder of the spectrum closely resembled that 



A 



given by the alcohol solution (fig. 4). 



PHTHALANIL OXIME ACETATE 



c=o 



C6H4<^^NC6H5 



C=N0C0CH3 



This new derivative was prepared by dissolving phthalanil 

 in an excess of acetic anhydride and allowing the solution to 

 stand overnight. The acetate was precipitated by the addition 

 of water and recrystallized from methyl alcohol in colorless 

 needles melting without decomposition at 174° (corrected). It 

 gradually turns yellow on standing in a desiccator over sulphuric 

 acid. 



Analysis of phthalanil oxime acetate. 



Substance. '^^^^^Z"' Nitrogen. 



Gram. cc. Per cent. 



0.2000 14.27 10.00 



0.2000 14.17 9.93 



Calculated for CwHisOsN^ 10.00 



The absorption spectrum of an alcohol solution was very 

 similar to that given by the oxime, but the persistence of the 



