C.I. Sulphur Brown 79 (8CI)

Preparation

117 parts of??4-Methylbenzene-1,3-diamine , 58 parts of? Benzene-1,3-diamine and?420 parts of a mixture of sulfur calcined?230 ~ 250 ℃ calcination 10 hours, and its product with Sodium hydroxide solution treatment, and add sulfuric acid precipitation (BIOS 983, 47), (BIOS 1155, 38).

Properties and Applications

Yellow brown to brown.

Standard	Acid Resistance	Alkali Resistance	Light Fastness	Fulling	Persperation Fastness	Soaping
						Moderate	Severe
ISO	2-3	3	2-3	5		4-5	4