dye|World dye variety

Name:C.I.Direct Brown 18,C.I.20220

Molecular Structure: Double azo class

C.I.Direct Brown 18,C.I.20220,CAS 8007-34-9,852.85,C37H22N6Na2O8S4,Benzo Thiazine Brown RS

Molecular Formula:C₃₇H₂₂N₆Na₂O₈S₄

Molecular Weight: 852.85

CAS Registry Number:8007-34-9

Manufacturing Methods : 6-Aminonaphthalene-1-sulfonic acid diazo, and Resorcinol coupling, C.I. Direct Yellow 59 (C.I. 49000) to diazo, and the generation of single accidentally coupled nitrogen compounds.

Properties and Applications: brown. For yellow brown is soluble in water, soluble in ethanol for orange brown. The strong sulfuric acid for orange brown, for yellow brown after diluted. The dye solution to join strong hydrochloric acid have yellow brown precipitation; Add thick sodium hydroxide solution for red light orange brown.

List of Suppliers:

Benzo Thiazine Brown RS( Bayer Group )