... dye Auramine O, also called Basic yellow 2, Pyocatanium aureum, aizen auramine, Pyoktanin Yellow, Canary Yellow,Pyoktanin, or C.I. 41000, ... stain. In its pure form, Auramine O appears as yellow needle crystals. It is very soluble in water and soluble ... in ethanol. .Specification:Name : Basic Yellow 2(Auramine o) Index No.: basic yellow 2 Appearance : Golden Yellow Even Powder Strength : 100% Moisture ...