Direct Dyes Direct Blue 75
Product Description
C.I.Direct Blue 75,
C.I.34220,
CAS 6428-60-0,
1055.91,C42H25N7Na4O13S4,Direct Blue 2GL,Direct Fast Blue 2GL
Molecular Formula:C42H25N7Na4O13S4
Molecular Weight: 1055.91
CAS Registry Number:6428-60-0
Manufacturing Methods :3-Aminobenzenesulfonic acid diazo, and 5-Aminonaphthalene-2-sulfonic acid coupling, its product to diazo, and 5-Aminonaphthalene-2-sulfonic acid coupling, again diazo, in alkaline conditions and 4-Hydroxy-7-(phenylamino)naphthalene-2-sulfonic acid coupling.
Properties and Applications: dark blue. Soluble in water for blue, insoluble in other organic solvents. In the dark for the strong sulfuric acid, diluted to red light purple red for brown. The dye solution to join strong hydrochloric acid for blue; Add thick sodium hydroxide solution for red light purple
C.I.Direct Blue 75,C.I.34220,CAS 6428-60-0,1055.91,C42H25N7Na4O13S4,Direct Blue 2GL,Direct Fast Blue 2GL
Molecular Formula:C42H25N7Na4O13S4
Molecular Weight: 1055.91
CAS Registry Number:6428-60-0
Manufacturing Methods :3-Aminobenzenesulfonic acid diazo, and 5-Aminonaphthalene-2-sulfonic acid coupling, its product to diazo, and 5-Aminonaphthalene-2-sulfonic acid coupling, again diazo, in alkaline conditions and 4-Hydroxy-7-(phenylamino)naphthalene-2-sulfonic acid coupling.
Properties and Applications: dark blue. Soluble in water for blue, insoluble in other organic solvents. In the dark for the strong sulfuric acid, diluted to red light purple red for brown. The dye solution to join strong hydrochloric acid for blue; 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 | 4 | 5 | 2-3 | 3 | ||
| AATCC | 4 | 3-4 | 4-5 | 2 | 3 | ||
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Product Categories : DIRECT DYE
