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Direct Blue 120

Name:C.I.Direct Blue 120,C.I.34085

Molecular Structure: trisazo class

C.I.Direct Blue 120,C.I.34085,CAS 3626-40-2,877.77,C36H22N7Na3O10S3,Direct Blue BR,Diazo Blue BR,Indigo Blue BRLS

C.I.Direct Blue 120,C.I.34085,CAS 3626-40-2,877.77,C36H22N7Na3O10S3,Direct Blue BR,Diazo Blue BR,Indigo Blue BRLS

Molecular Formula:C36H22N7Na3O10S3

Molecular Weight: 877.77

CAS Registry Number:3626-40-2

Manufacturing Methods : 2-(4-Aminophenylamino)-2-oxoacetic acid diazo, and 5-Aminonaphthalene-2-sulfonic acid coupling, again diazo, and 5-Aminonaphthalene-2-sulfonic acid coupling, product to diazo, and 4-Hydroxynaphthalene-1-sulfonic acid coupling, and then 2-(4-Aminophenylamino)-2-oxoacetic acid hydrolysis base

Properties and Applications: to navy blue. Soluble in water for the navy, slightly soluble in ethanol and soluble fiber element, insoluble in other organic solvents. The strong sulfuric acid in bright light blue to for olive, and after dilution for dark purple; In the dark purple of nitric acid solution; In strong hydrochloric acid for red light blue solution. The dye solution to join strong hydrochloric acid for violet black, precipitation; Add thick sodium hydroxide solution have blue-black precipitation; Join rare for sodium hydroxide solution of dark.

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

List of Suppliers:

ACDI Diazo Blue BR 125%(Aakash Chemicals & Dyestuffs Inc)

Benzamin Indigo Blue BRLS ( Bayer Group )

Diazo Blue BRN 125%( Global Colors Inc. )

Direct Blue BR(Chemische Fabriek Triade BV)

Fabramine Blue BRN 125%( Fabricolor Inc. )

Permalite Brill Blue BR 125%( Standard Dyes )


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