dye|World dye variety

Name:C.I.Direct Brown 79,C.I.30050

Molecular Structure: trisazo class

C.I.Direct Brown 79,C.I.30050,CAS 6483-77-8,782.65,C31H21N8Na3O9S2,Direct Brown 3G,Brown CN HIC

Molecular Formula:C₃₁H₂₁N₈Na₃O₉S₂

Molecular Weight: 782.65

CAS Registry Number:6483-77-8

Manufacturing Methods : 4-(4-Aminophenyl)benzenamine double nitriding, first coupled with 2-Hydroxybenzoic acid, and then and 4-Aminobenzene-1,3-disulfonic acid diazo, and Benzene-1,3-diamine coupled to a product matches.

Properties and Applications:  brown. Brown powder. Soluble in water for yellow orange brown solution, soluble in ethanol, insoluble in other organic solvents. The strong sulfuric acid for violet black, diluted for brown. The dye solution to join thick and strong hydrochloric acid sodium hydroxide solution are generating orange brown precipitation. Cellulose fiber of dyeing, the dye devoured performance is good, temperature in 80 ℃, the largest affinity, discharge the gender is good, hard to sensitive. After dyeing with copper sulfate handling,can improve the dyeing fastness. Dyeing cotton and viscose for yellow brown. Mainly used for dyeing knitting fabric, blankets, flannelette, viscose/silk, Wool / nylon blended fabric dyeing, generally not directly used for printing.

List of Suppliers:

Brown CN HIC( Sharda International )

Direct Brown 3G(Sinochem Tianjin Imp Exp Corp)