dye|World dye variety

Name:C.I.Direct Blue 111,C.I.26680

Molecular Structure: Double azo class

C.I.Direct Blue 111,C.I.26680,CAS 8004-62-4,665.61,C28H21N5Na2O8S2

Molecular Formula:C₂₈H₂₁N₅Na₂O₈S₂

Molecular Weight: 665.61

CAS Registry Number:8004-62-4

Manufacturing Methods : 8-Amino-5-nitronaphthalene-2-sulfonic acid and 5-Amino-8-nitronaphthalene-2-sulfonic acid diazo, and 2-Amino-4-methylanisole coupling, product to diazo, and 4-Hydroxynaphthalene-1-sulfonic acid coupling, and then will the nitro reductive into amino.

Properties and Applications: dark green light blue. Soluble in water for purple to blue, not soluble in alcohol. The strong sulfuric acid for blue-ray in black, for violet blue after diluted. The dye solution to join strong hydrochloric acid for purplish red solution, for violet blue after diluted; Add thick sodium hydroxide solution not dissolve, diluted dark for solution.

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