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Direct Blue 38

Name:C.I.Direct Blue 38,C.I.30090

Molecular Structure: trisazo class

C.I.Direct Blue 38,C.I.30090,CAS 1324-83-0,949.83,C38H26N9Na3O11S3,Toluylene Black Blue GN

C.I.Direct Blue 38,C.I.30090,CAS 1324-83-0,949.83,C38H26N9Na3O11S3,Toluylene Black Blue GN

Molecular Formula:C38H26N9Na3O11S3

Molecular Weight: 949.83

CAS Registry Number:1324-83-0

Manufacturing Methods :  6-Amino-4-hydroxynaphthalene-2-sulfonic acid acid diazo, in acid conditions coupled with Benzene-1,3-diamine, 4-(4-Aminophenyl)benzenamine double nitriding, first in alkaline conditions and 4-Amino-5-hydroxynaphthalene-2,7-disulfonic acidcoupling, again in alkaline conditions and accidentally coupled nitrogen compounds.

Properties and Applications: dark blue. For a blue-black soluble in water, soluble in ethanol is shallow purple. The strong sulfuric acid for blue, shallow purple for diluted. The dye solution to join strong hydrochloric acid have violet and precipitation; With strong sodium hydroxide solution for dark purple.

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

List of Suppliers:

Toluylene Black Blue GN( Chemische Fabrik Griesheim-Elektron )


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