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Direct Red 74

Name:C.I.Direct Red 74,C.I.22170

Molecular Structure: Double azo class

C.I.Direct Red 74,C.I.22170,CAS 8003-75-6,726.69,C33H24N6Na2O7S2,Oxamine Bordeaux BXX

C.I.Direct Red 74,C.I.22170,CAS 8003-75-6,726.69,C33H24N6Na2O7S2,Oxamine Bordeaux BXX

Molecular Formula:C33H24N6Na2O7S2

Molecular Weight: 726.69

CAS Registry Number:8003-75-6

Manufacturing Methods : 4-(4-Aminophenyl)benzenamine double nitriding, first and 6-Aminonaphthalene-2-sulfonic acid and 7-Aminonaphthalene-2-sulfonic acid coupling, and then in alkaline conditions and 7-Amino-4-hydroxynaphthalene-2-sulfonic acid coupling.

Properties and Applications:  blue-ray red. Soluble in water for red jujube, and adequate soluble in ethanol in red. The strong sulfuric acid in blue, diluted red for sauce. The dye solution to join strong hydrochloric acid for Red sauce, precipitation; Add thick sodium hydroxide solution for orange brown.

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

List of Suppliers:

Oxamine Bordeaux BXX( Badische Anilin-und Soda Fabrik )


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