Basic information Safety Supplier Related

Direct Brown 159

Basic information Safety Supplier Related

Direct Brown 159 Basic information

Product Name:
Direct Brown 159
Synonyms:
  • Direct Brown 159
  • C.I.Direct Brown 159:C.I.31755
MW:
0
Mol File:
Mol File
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Direct Brown 159 Usage And Synthesis

Preparation

4-(4-Aminophenyl)benzenamine double nitriding, first coupled with 2-Hydroxybenzoic acid , and then in alkaline conditions and 4-Amino-5-hydroxynaphthalene-2,7-disulfonic acid?coupling, product diazo again, and Resorcinol coupling.

Properties and Applications

brown olive green light. Soluble in water for brown. The strong sulfuric acid is palm in light purple, diluted for Shallow red time The dye solution to join strong hydrochloric acid with brown precipitation; Add thick sodium hydroxide solution for brown.

Standard Acid Resistance Alkali Resistance Light Fastness Soaping Water
Fading Stain Fading Stain
ISO 4-5 4 3 4 4-5

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