Preparation
With or without with?a?phenol?and?4-(4-Hydroxyphenylamino)phenol??4-(Naphthaleti-2-ylamino)phenol?in 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 the?2,4-Dinitrophenol?and by the Sulphur Black (C.I. Sulphur Black 1?and related dye)
Properties and Applications
blue black. In the Sodium hydroxide solution for gray, dilution after black precipitation; In concentrated sulfuric acid for blue, dilution after black precipitation.
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Standard
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Acid Resistance
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Alkali Resistance
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Light Fastness
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Fulling
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Persperation Fastness
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Soaping
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Moderate
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Severe
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ISO
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5
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4-5
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6-7
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5
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5
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5
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4-5
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AATCC
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5
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4
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7-8
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4
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