Name:C.I.Direct Red 80,C.I.35780

Molecular Structure: Multi-azo class
 
C.I.Direct Red 80,C.I.35780,CAS 2610-10-8,1373.08,C45H26N10Na6O21S6,Direct Red F3,Direct Fast Red BA,Direct Fast Red F3B,Red 8BLN,Sirius Red F3B,Solophenyl Red 3BL

Molecular Formula:C45H26N10Na6O21S6

Molecular Weight: 1373.08

CAS Registry Number:2610-10-8

Manufacturing Methods :  (a) 3,4′-Disulfo-4-aininoazobenzene diazo, and 7-Amino-4-hydroxynaphthalene-2-sulfonic acid coupling, and then hydrolysis acetyl amino and light gasification; (b) 3,4′-Disulfo-4-aininoazobenzene (2 Moore) diazo, coupled with N,N’-bis(4-hydroxy-2-sulfonaphthalene-7-yl)urea.
 
More used to viscose fabric dyeing,also used for silk, wool fabric dyeing and printing.