Direct Black 199
Name:C.I.Direct Black 199,C.I.33640
Molecular Structure: trisazo class
Molecular Formula:C34H23N8Na3O12S3
Molecular Weight: 900.76
CAS Registry Number:
Manufacturing Methods : 5-Amino-2-(4-aminophenylamino)benzenesulfonic acid double nitriding, in alkaline conditions and 4-Amino-5-hydroxynaphthalene-1-sulfonic acid coupling, 2-Aminobenzenesulfonic acid diazo, in alkaline conditions and 4-Amino-5-hydroxynaphthalene-1-sulfonic acid group of adjacent a coupling, and then and Resorcinol coupling.
Properties and Applications: black.
List of Suppliers:
Sakoderm Black Z( Sivashdky Dye Plant )
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