Sulfur blue 9 (C.I. 53430)

4-(4-Dimethylaminoanilino)phenol?in ethanol Sodium polysulfide solution in the heating, and in 84 ℃ next return 165 ~ 170 hours, then blowing air to precipitation, garnish with hydrochloric acid part neutralization. This indophenol?is by N1,N1-dimethylbenzene-1,4-diamine and phenol and condensation.

brilliant blue. Blue powder. Soluble in Sodium sulfide solution, the solubility of medium. Used for cotton, hemp, viscose fiber dyeing. Also can be used for paper and leather dyeing.

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