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Direct Blue 50

Name:C.I.Direct Blue 50,C.I.24205

Molecular Structure: Double azo class

C.I.Direct Blue 50,C.I.24205,CAS 6428-99-5,758.69,C34H24N4Na2O10S2,Trisulfon Blue B

C.I.Direct Blue 50,C.I.24205,CAS 6428-99-5,758.69,C34H24N4Na2O10S2,Trisulfon Blue B

Molecular Formula:C34H24N4Na2O10S2

Molecular Weight: 758.69

CAS Registry Number:6428-99-5

Manufacturing Methods : 3,3′-Dimethoxylbenzidine double nitriding, and 5-Hydroxynaphthalene-1-sulfonic acid (2 Moore) coupled.

Properties and Applications: blue. Soluble in water for red light purple, soluble in ethanol for purple. The strong sulfuric acid for blue, purple for red after diluted. The dye solution to join strong hydrochloric acid for dark red light purple, accompanied by precipitation; Add thick sodium hydroxide solution for red light purple.

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

List of Suppliers:

Trisulfon Blue B(Sandoz Ltd )


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