trisodium 3-[[4-[[6-(anilino)-1-hydroxy-3-sulphonato-2-naphthyl]azo]-5-methoxy-o-tolyl]azo]naphthalene-1,5-disulphonate

Preparation

3-Aminonaphthalene-1,5-disulfonic acid diazo, and 2-Amino-4-methylanisole coupling, its product to diazo, in alkaline conditions and 4-Hydroxy-7-(phenylamino)naphthalene-2-sulfonic acid coupling.

Flammability and Explosibility

Not classified

Properties and Applications

blue purple. Soluble in water for deep purple, and adequate soluble in ethanol for red light purple. The strong sulfuric acid for Tracy in blue, blue for red after diluted. The dye solution to join strong hydrochloric acid blue precipitation; Add thick sodium hydroxide solution has the purple precipitation. Used for cellulose fiber dyeing and printing of, also can used for the paper color.