Benzenesulfonic acid, 3,5-bis[(2,4-diamino-5-nitrophenyl)azo]-4-methyl-, monosodium salt

3,5-Diamino-4-methylbenzenesulfonic acid double nitriding,and 4-Nitrobenzene-1,3-diamine (2 Moore) coupled.

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

Standard	Acid Resistance	Alkali Resistance	Light Fastness	Soaping		Water
				Fading	Stain	Fading	Stain
ISO	4	4	1	2		2