dye|World dye variety

Name:C.I.Acid Brown 216,C.I.34906

Molecular Structure: trisazo class,Metal Complexes

C.I.Acid Brown 216,C.I.34906,CAS 8007-63-4,843.58,C28H15N9Na2O16S2,Dark Brown ET,Dark Brown BJ,Acid Brown ERY

Molecular Formula:C₂₈H₁₅N₉Na₂O₁₆S₂

Molecular Weight: 843.58

CAS Registry Number: 8007-63-4

Manufacturing Methods :   4-Amino-5-hydroxynaphthalene-2,7-disulfonic acid diazo, in weak alkali conditions Coupled with resorcinol, 2-Amino-4,6-dinitrophenol diazo, in weak alkali conditions and the single accidentally nitrogen content coupling, its product again with diazo of 4-Nitrobenzenamine weak inorganic acid in the coupling, and then translate to iron complex.

Properties and Applications: dark red light brown. Mainly used for leather color.

List of Suppliers:

Albion Acid Brown ERY ( Albion Dyestuffs Ltd )

Inoderme Dark Brown BJ ( Francolor Pigments SA )

Leather Dark Brown ET( S A Robama )