Acid Chrome Brown B

(a) 8-Hydroxynaphthalene-1,3,6-trisulfonic acid alkali fusion; (b),4-Amino-5-hydroxynaphthalene-2,7-disulfonic acid and sodium hydroxide in the pressure response; (c), 4,5-Diaminonaphthalene-2,7-disulfonic acid?and Inorganic acid in aqueous solution under pressure reaction.

red light brown. Soluble in water is shallow brown. In concentrated sulfuric acid of colorless, no change after diluted. Dye aqueous solution to join Ferric chloride for grass green.

Standard	Ironing Fastness	Light Fastness	Fulling		Persperation Fastness	Soaping	Water
			Alkali	Acid
ISO	4	5-6	5		5	5	5