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Direct Blue 49

Name:C.I.Direct Blue 49,C.I.22540

Molecular Structure: Double azo class

C.I.Direct Blue 49,C.I.22540,CAS 6426-73-9,934.73,C32H18N4Na4O16S4,Dianil Blue R

C.I.Direct Blue 49,C.I.22540,CAS 6426-73-9,934.73,C32H18N4Na4O16S4,Dianil Blue R

Molecular Formula:C32H18N4Na4O16S4

Molecular Weight: 934.73

CAS Registry Number:6426-73-9

Manufacturing Methods : 4-(4-Aminophenyl)benzenamine double nitriding, and 4,5-Dihydroxynaphthalene-2,7-disulfonic acid (2 Moore) coupled.

Properties and Applications: dark red light blue and red light navy. Soluble in water for deep purple, soluble in ethanol for purple. The strong sulfuric acid for green light blue, for purple diluted. The dye solution to join strong hydrochloric acid for deep blue purple; Add sodium hydroxide solution for dark purple.

Standard Acid Resistance Alkali Resistance Light Fastness Soaping Water
Fading Stain Fading Stain
ISO 5 3-4 1-2 2 2-3

List of Suppliers:

Dianil Blue R( Farbwerke vorm. Meister Lucius &Brtining )


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