STAINING, PRACTICAL AND THEORETICAL 



CHLORANTINE FAST GREEN BLL 



Michrome No. 541. Molecular weight 1324. An acid tris-azo 

 dye, pH 7-5*. Solubility at 15° C; water 5*25%, absolute alcohol 



0-5%' 



N 



N=N 



—OH 

 COOH 



NaOsS 



SOsNa 



CHLORANTINE FAST RED 



Michrome No. 237. Molecular weight 992. An acid dis-azo dye, 

 pH j-2S^. Solubility at 15° C; water 1%, absolute alcohol 0-45%. 



SOsNa 



N=N 



OCH3 



■N 



CH. 



SOsNa 



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



44 



SOsNa 



„^"-^i:^ 



SOsNa 



