5-[(2-Chloro-4-nitrophenyl)[3-methyl-4-oxo-5-(sodiooxycarbonyl)-2,5-cyclohexadien-1-ylidene]methyl]-2-hydroxy-3-methylbenzoic acid sodium salt

2-Hydroxy-3-methylbenzoic acid with the 2,6-Dichloro-3-nitrobenzaldehydecondensation, the product oxidation and changed into sodium salt.

brilliant green blue. Soluble in water for brown light yellow, slightly soluble in alcohol. In concentrated sulfuric acid to blue light red, red precipitation after dilution. Dye aqueous solution to join sodium hydroxide as 3H-indol-3-one,2-(1,3-dihydro-3-oxo-2H-indol-2-ylidene)-1,2-dihydro- blue.

Standard(cotton)	Ironing Fastness	Light Fastness	Fulling		Persperation Fastness	Soaping	Water
			Alkali	Acid
ISO		3				4