dihydrogen bis[(benzyl)[4-[[4-(benzylethylamino)phenyl](5-hydroxy-2,4-disulphonatophenyl)methylene]cyclohexa-2,5-dien-1-ylidene](ethyl)ammonium], calcium salt

3-Hydroxybenzaldehyde?(1 Moore) and N-benzyl-N-ethylbenzenamine (2 Moore) condensation, its product two stlfonation, oxidation, and finally as calcium salting out.

colourful green light blue. Soluble in water for green light blue, soluble in ethanol for light green. The strong sulfuric acid for light in the dark yellow; Diluted turquoise and the emergence of a precipitation. In water solution to join sodium hydroxide, low temperature when the same color, heat into deep purple.

Standard	Light Fastness	Soaping		Persperation Fastness	Oxygen bleaching		Fastness to seawater
		Fading	Stain		Fading	Stain	Fading	Stain
ISO	2-3	3-4		3-4	3		3
AATCC	3	3		2			2