dye|World dye variety

Name:C.I.Direct Blue 239,C.I.34175

Molecular Structure: trisazo class

C.I.Direct Blue 239,C.I.34175,CAS 6428-55-3,892.78,C36H23N8Na3O10S3,Benzamin Dark Blue BLS

Molecular Formula:C₃₆H₂₃N₈Na₃O₁₀S₃

Molecular Weight: 892.78

CAS Registry Number:6428-55-3

Manufacturing Methods : 2-(4-Aminophenylamino)-2-oxoacetic acid diazo, and 5-Aminonaphthalene-2-sulfonic acid coupling, again diazo, and 5-Aminonaphthalene-2-sulfonic acid coupling, product to diazo, in alkaline conditions and 6-Amino-4-hydroxynaphthalene-2-sulfonic acid coupling, and then 2-(4-Aminophenylamino)-2-oxoacetic acid hydrolysis base

Properties and Applications: blue

List of Suppliers:

Benzamin Dark Blue BLS( Bayer Group )