Direct Black 41
Name:C.I.Direct Black 41,C.I.30260
Molecular Structure: trisazo class
C.I.Direct Black 41,C.I.30260,CAS 6486-53-9,981.92,C40H34N9Na3O11S3
Molecular Formula:C40H34N9Na3O11S3
Molecular Weight: 981.92
CAS Registry Number:6486-53-9
Manufacturing Methods : 4-(4-Aminophenyl)benzenamine double nitriding, in acid conditions and 4-Amino-5-hydroxynaphthalene-2,7-disulfonic acid coupling, 4-Aminobenzenesulfonic acid diazo, in alkaline conditions and formation of accidentally coupled nitrogen compounds, again with 3-Acetylamino-N,N-diethylaniline coupling.
Properties and Applications: gray to black. Soluble in water for violet black. The strong sulfuric acid for navy, for violet after diluted. The dye solution to join strong hydrochloric acid have dark purple precipitation; Add thick hydrogen, have blue-ray solution oxidation gray precipitation.
List of Suppliers: