C.I. Sulphur Brown 19 (8CI,9CI)

The 85.8 parts of?4-Methylbenzene-1,3-diamine , 42 parts of?4-(4-Aminophenyl)benzenamine, 36 parts of ?M-nitroaniline and 600 parts of ?mixture of sulfur in the 220 ~ 240 ℃ calcination 9 hours, in Sodium sulfide solution treatment its product, and acid precipitation (BIOS?1155,37). With 4-Aminophenol instead of M-nitroaniline?get similar dye.

yellow brown. In the Sodium sulfide solution solubility is very good, for red orange; In concentrated sulfuric acid to light brown, diluted the same color.

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