255 



Analysis of the sodium sait dryed at 125'. 

 0.1025 gr. gave 6.5 cm^ N (t = 7» p = 736 mm). 

 finmd 7.44<)/o X 

 calcul, for C,4H8N„0-,6ClNa 7.47»/„ N 



The baryum sait is obtained by the action of baryum chloride 

 on the aqueous solution of the sodium sait in the form of a yellow- 

 ish white precipitate which mav be crystallised from a large amount 

 of boiling water and obtained in form of minute yellowish white 

 needles. 



Analysis: 



0.6843 gr. gave 0.i914 gr. BaSO., 



found 16.45»/o Ba 



calcul, for Ba iCi4H8N.,ClS05), 16.27o/„ ßa 



D.^(3) C h 1 o r o c u m a r o p h e n a z i n e. 



This substance is formed readily by dry distillation of the ba- 

 ryum sait described above. It has been purified by crystallising from 

 alcohol. The small admixture of a colouring matter can be remo- 

 ved by charcoal. Chlorocumarophenazinc represents white needles, 

 which are readily soluble in alcohol, ethcr, benzène and chloroform. 

 The solutions Üuoresce faintly green. M. p. 149 — 150". 



Analysis: 



0.1043 gr. gave 9.5 cm^ N it = 9" p =^ 745 mm) 



found 10.73»/o N 



calcul, for C14 H^ONo Cl 11.02o/„ N 



II. 



Derivatives of ps-Imlopheiuizine. 

 N - tolyl - i».s - indophonazine. 



The p-methyl-o-nitrodiphenylamine necessary for this synthesis 

 we obtained by Schopfs method, which consists in condensing p-to- 

 Inidine with o-chlornitrotoluene. This nitrocompound we dissolved 

 in acetic acid. reduced it with zinc dust and combined the amino- 

 compound formed with isatin. which had been also dissolved in acetic 



