... powder Type:basic dye Auramine O, also called Basic yellow 2, Pyocatanium aureum, aizen auramine, Pyoktanin Yellow, Canary Yellow,Pyoktanin, ... soluble in ethanol. .Specification:Name : Basic Yellow 2(Auramine o) Index No.: basic yellow 2 Appearance : Golden Yellow Even Powder Strength : 100 ... fastness .For bright color ,also used to fight the system of green or red. And also be used for stainning the ...