SECTION ONE 



(3) FaLg = TRIFALGIC ACID 



Formed when the acidjuchsin accepts three molecules of light green. 



SOsNa SOsNa 



NaOaS 



sT— C2H5 N— CaHs 



I I 



HC CH 



N— C2H5 N— C2H5 

 HC CH 



SOaNa SOaNa SOaNa SOaNa 



Synonyms: MG blue, Falg blue 

 (CiaiHusNgOaaSiaNas) 

 Michrome No. 818. Molecular weight 2,911, pH^-z*. 

 Solubility at 15° C; water all proportions, absolute alcohol nil. 

 * 1% in neutral distilled water; see pages 17 and 29. 



