dye|World dye variety

Name:C.I.Acid Brown 121,C.I.33520

Molecular Structure: trisazo class

C.I.Acid Brown 121,C.I.33520,CAS 6487-04-3,798.58,C28H16N8Na2O14S2,Acid Brown H,Acid Brown G

Molecular Formula:C₂₈H₁₆N₈Na₂O₁₄S₂

Molecular Weight: 798.58

CAS Registry Number: 6487-04-3

Manufacturing Methods :   4-Amino-5-hydroxynaphthalene-2,7-disulfonic acid diazo, Coupled with resorcinol, 4-Nitrobenzenamine diazo, and the generation of single accidentally coupled nitrogen compounds, its product again with diazo of 2-Amino-4-nitrophenol coupling.

Properties and Applications: dark yellow light brown. Soluble in water for brown. The strong sulfuric acid for wine, dilute after brown precipitation. In water solution to join strong hydrochloric acid with brown precipitation; Join rare sodium hydroxide solution for red brown.

List of Suppliers:

Acid Brown H Shangyu Guangming Chemical Co.,Ltd.

Acid Brown G (Amar Impex)

Corium Acid Dark Brown MG ( Industria Chimica Dott? )

Eniavel Dark Brown H( Enia Industries Quimicas S.A. )

Indacid Brown H( Indokem Ltd )

Kemacid Brown [AA] ( Karsandas Mavji )

Lerui Acid Brown GH( Rosi Chemical Co Ltd )