Acid orange 45

4-(4-Aminophenyl)benzenamine double nitriding, and 3-Aminonaphthalene-2,7-disulfonic acid with phenol coupling, then use 4-Methylbenzene-1-sulfonyl chloride esterification of hydroxyl phenol.

red light orange. Soluble in water for yellow. The strong sulfuric acid in orange, diluted the same color. The dye solution to join strong hydrochloric acid for product red; With nitric acid product red deepen; Join rare sodium hydroxide solution color obviously becomes shallow. Used forwool, silk and polyvinyl alcohol fibers such as dyeing and direct printing. Also used in leather dyeing and manufacture of organic pigments.

Standard	Light Fastness	Soaping		Persperation Fastness	Oxygen bleaching		Fastness to seawater
		Fading	Stain		Fading	Stain	Fading	Stain
ISO	6	3-4	5	5	5		4
AATCC	4-5	3-4	3-4	4-5	3	5	5	5