dye|World dye variety

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.

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) )