78 



J. BOOTH, E. BOYLAND 



VOL. 12 (1953) 



ence between F^ and Fg gave the amount of dibenzcarbazole precipitated as a molecular 

 complex for each pH value. 



200h 



0.5 



1.5 



2.5 



I 

 3.5 



Time (hours) 



tittle Kiiuui 3/ 



Relationship between cone, of aromatic compound and time of shaking. O — O, ^'■2-5'-(-- 



"" ' °- X X, 1 :2-8:9-dibenzacridine in 0.072 M tetramethyluric 



dibenzcarbazole in 0.063 M caffeine, ^ ^. i .^-o.y-u...^, ^. ^-..^ .^, 



"id; --- ^, 1 : 2-6:7-dibenzacridine in 0.072 M tetramethyluric acid 



acic 



-o, 3:4-5:6- 



3 3.5 



rime (hours) 

 Fig. 2. Relationship between cone, of aromatic compound and time of shaking. O- 



dibenzcarbazole in 0.063 ^^ caffeine; x X 3:4-5:6-dibcnzcarbazole in 0.072 M tetramethyluric 



acid; % # 3:4-6:7-dibenzacridine X lo"^ in 0.072 M tetramethyluric acid. 



References p. 87. 



