dye|World dye variety

Name:C.I.Direct Blue 11,C.I.30350

Molecular Structure: trisazo class

C.I.Direct Blue 11,C.I.30350,1105.76,C38H22Cl2N8Na4O14S4,Pontamine Fast Blue SFL

Molecular Formula:C₃₈H₂₂Cl₂N₈Na₄O₁₄S₄

Molecular Weight: 1105.76

CAS Registry Number:

Manufacturing Methods :  2,5-Dichlorobenzenamine diazo, in acid conditions and 4-Amino-5-hydroxynaphthalene-2,7-disulfonic acid coupling, 4-(4-Aminophenyl)benzenamine double nitriding, first in alkaline conditions and accidentally coupled nitrogen compounds, and then in alkaline conditions and 4-Amino-5-hydroxynaphthalene-2,7-disulfonic acidcoupling.

Properties and Applications: dark blue. Soluble in water for dark green light blue, soluble in ethanol, insoluble in acetone and other organic solvents. The concentrated sulfuric acid is light to dark gray light blue, diluted dark red light for blue, precipitation. The dye solution to join a little red sulfuric acid 10%; Add thick sodium hydroxide solution to become red become colourful.

List of Suppliers:

Pontamine Fast Blue SFL Conc( Classic Dyestuffs Inc )