Direct Blue 54
Name:C.I.Direct Blue 54,C.I.27960
Molecular Structure: Double azo class
C.I.Direct Blue 54,C.I.27960,CAS 8004-75-9,844.69,C32H19N6Na3O12S3,Direct Blue NB-2B,Blue R,Blue 4CH
Molecular Formula:C32H19N6Na3O12S3
Molecular Weight: 844.69
CAS Registry Number:8004-75-9
Manufacturing Methods : 2-Amino-5-nitrobenzenesulfonic acid diazo, and 5-Aminonaphthalene-2-sulfonic acid and 8-Aminonaphthalene-2-sulfonic acid coupling, its product to diazo, in alkaline conditions and 4-Hydroxy-7-(phenylamino)naphthalene-2-sulfonic acid coupling.
Properties and Applications: blue. The strong sulfuric acid for green, diluted dark for; In the light of nitric acid for palm orange solution. The dye solution to join strong hydrochloric acid for dark, precipitation; Add thick sodium hydroxide solution for blue precipitation.
| Standard | Acid Resistance | Alkali Resistance | Light Fastness | Soaping | Water | ||
| Fading | Stain | Fading | Stain | ||||
| ISO | 5 | 4-5 | 3 | 2 | 2 | ||
List of Suppliers:
Atul Direct Blue NB-2B ( Atul Limited )
Blue 4CH( Joint Stock Company ‘Coioros’ )
Blue NB 2B(United Chemie)
Dinamine Blue NB-2B(Dintex Dyechem Ltd)
Rayon Blue R( Aziende Colon Nazionali Affini (ACNA) )
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