Name:C.I.Direct Brown 5,C.I.30135
Molecular Structure: trisazo class
Molecular Weight: 682.57
CAS Registry Number:6844-77-5
Manufacturing Methods : 4-(4-Aminophenyl)benzenamine double nitriding, first coupled with 2-Hydroxybenzoic acid, and then in alkaline conditions and 3-Aminobenzenesulfonic acid diazo, in acid conditions Resorcinol coupled with the product matches.
Properties and Applications: brown. Soluble in water for yellow brown, slightly soluble in alcohol. The strong sulfuric acid to red light purple, for yellow brown after diluted. The dye solution to join strong hydrochloric acid for orange brown, have precipitation; Add thick sodium hydroxide solution for red light orange brown.
|Standard||Acid Resistance||Alkali Resistance||Light Fastness||Soaping||Water|
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