Name:C.I.Direct Brown 51,C.I.31710
Molecular Structure: trisazo class
Molecular Weight: 848.71
CAS Registry Number:4623-91-0
Manufacturing Methods : 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, its product to diazo, and Benzene-1,3-diamine coupling.
Properties and Applications: brown olive green light.
|Standard||Acid Resistance||Alkali Resistance||Light Fastness||Soaping||Water|
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