With or without withaphenoland4-(4-Hydroxyphenylamino)phenol4-(Naphthaleti-2-ylamino)phenolin Sodium polysulfide of tert – Butanol solution, 108 ℃ reflux heating 30 hours, then use Sodium nitrite oxidation, water steam distillation out tert – Butanol, filter ceding dye crude products, with dilute hydrochloric acid treatment into final product. The dye in the cellulose fiber dyeing, its resistance to chlorine bleaching fastness is better than the2,4-Dinitrophenoland by the Sulphur Black (C.I. Sulphur Black 1and related dye)
