Blue 2GL;C.I.34220;Solar Blue 2G;Einecs 229-211-8;C.I.Direct Blue 75;Amanil Fast Blue 2GL;Enianil Light Blue GL;Direct blue 75 (C.I. 34220);ZVMRKYGPNCNIPE-FQAJCAEFSA-N;C.I.Direct Blue 75:C.I.34220
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
