9-(dimethylamino)benzo[a]phenoxazin-7-ium chloride

commonly known as Meldola ‘s Blue. Naphthalen-2-ol with excess N,N-dimethyl-4-nitrosobenzenamine hydrochloride in hot ethanol in response, then will product into Zinc?double salt .

red light navy blue. Soluble in water for blue purple, soluble in ethanol to blue. The strong sulfuric acid in the black light for green, diluted to blue. The dye solution to join sodium hydroxide with brown floc appear.

Standard	Light Fastness	Persperation Fastness		Ironing Fastness		Soaping
		Fading	Stain	Fading	Stain	Fading	Stain
C	1			3		1-2	4-5
A	2	3		3		3