GERANINE G

4-(6-Methyl-2,3-dihydrobenzo[d]thiazol-2-yl)benzenamine diazo, and 4-Hydroxynaphthalene-2,7-disulfonic acid (and 1-Naphthol-3,7-disulfonic acid) coupled.

bright blue light pink. Soluble in water for pink, and adequate soluble in alcohol in red. The strong sulfuric acid to red light purple, for orange red after diluted. The dye solution to join strong hydrochloric acid for orange brown; Add thick oxidation solution have red light brown hydrogen precipitation.

Standard	Acid Resistance	Alkali Resistance	Light Fastness	Soaping		Water
				Fading	Stain	Fading	Stain
ISO	3	4	3	1		1-2