STAINING, PRACTICAL AND THEORETICAL 



TOLUIDINE BLUE 



Michrome No. 641. Molecular weight 306. A basic dye, 

 pH2-25*- Solubility at 15° C; water 3-25%, absolute alcohol 



i75%- 



(H3C)2N- 



CH3 

 NH2 



CI- 



* tO, 



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



64 



