C.I. Sulphur Brown 54 (8CI)

4-Methylbenzene-1,3-diamine and 4-Methyl-3-nitrobenzenesulfonic acid?mixture with Sodium polysulfide in 275 ~ 280 ℃ calcination.

dark yellow brown. In the Sodium sulfide solution for orange brown; In concentrated sulfuric acid for orange brown, dilution have orange brown precipitation.

Standard	Acid Resistance	Alkali Resistance	Light Fastness	Fulling	Persperation Fastness	Soaping
						Moderate	Severe
ISO	5	4	3	4		4