C.I. Sulphur Red 4 (8CI)

1,3-Dichloro-2-hydroxy-7-methyl-8-aminophenazineand sodium polysulphide aqueous solution in the presence of copper sulfate, return in 106 ℃ heating 22 hours, dilution and drum drying. This is Pyridine by4-Methylbenzene-1,3-diamine and 4-Amino-2,6-dichlorophenolManganese dioxide oxidation with the mixture and be (BIOS 1155, – 33)

dark red

Standard	Acid Resistance	Alkali Resistance	Light Fastness	Fulling	Persperation Fastness	Soaping
						Moderate	Severe
ISO	4	4	4	3		2-3