Phenol, 4-[[4-(dimethylamino)phenyl]azo]-, reaction products with sodium sulfide (Na2(Sx)), leuco derivs.

4-(4-Dimethylaminoanilino)phenol in ethanol Sodium polysulfide solution 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.

Not classified

brilliant blue.?In general the solubility of sodium sulfide solution.

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