Direct Red 180

2-[2-Amino-5-[4-amino-3-(carboxymethoxy)phenyl]-phenoxy]acetic acid?double nitriding, and 3-Methyl-1-phenyl-1H-pyrazol-5-amine (2 Moore) coupled.

yellow light red. Soluble in water for yellow orange, soluble in ethanol. The strong sulfuric acid to red light purple, yellow light brown for diluted. The dye solution to join strong hydrochloric acid for orange brown, have precipitation; Add thick sodium hydroxide solution discoloration.

Standard	Acid Resistance	Alkali Resistance	Light Fastness	Soaping		Water
				Fading	Stain	Fading	Stain
ISO	3	4	6	4		4-5