disodium 6-amino-4-hydroxy-5-[(4-nitro-2-sulphonatophenyl)azo]naphthalene-2-sulphonate Chemical Properties

EPA Substance Registry System

2-Naphthalenesulfonic acid, 6-amino-4-hydroxy-5-[(4-nitro-2-sulfophenyl)azo]-, disodium salt (6441-91-4)

disodium 6-amino-4-hydroxy-5-[(4-nitro-2-sulphonatophenyl)azo]naphthalene-2-sulphonate Usage And Synthesis

Chemical Properties

Dark reddish purple powder. Dissolved in water, the aqueous solution is reddish purple, adding concentrated hydrochloric acid is date red; adding concentrated sodium hydroxide solution is blue. Reddish purple when dissolved in ethanol. Soluble in ethylene glycol ether, slightly soluble in acetone and benzene, insoluble in other organic solvents. Orange-brown in concentrated sulfuric acid, purple after dilution; red solution in concentrated nitric acid, then turns to brown. When stained with copper and iron ions, the color and light are slightly darker, and when stained with chromium ions, the color and light are slightly changed.

Uses

Acid Violet 1 (CAS# 6441-91-4) is an organic azo dye used with linen fabrics.

Preparation

2-Amino-5-nitrobenzenesulfonic acid?diazo, and 6-Amino-4-hydroxynaphthalene-2-sulfonic acid?in acid conditions coupled.

Properties and Applications

purple. Purple powder, soluble in water (red light purple), ethanol (red light purple) and soluble fiber element, slightly soluble in acetone and benzene insoluble in other organic solvents. Meet strong sulfuric acid is orange brown, after dilute for purple; Meet nitric acid solution for red turn brown. Its water solution and strong hydrochloric acid for purplish red color, add thick sodium hydroxide solution to blue. Used for wool, wool fiber blended fabric dyeing and printing, white sex good, can also be used in leather and paper color.

disodium 6-amino-4-hydroxy-5-[(4-nitro-2-sulphonatophenyl)azo]naphthalene-2-sulphonate (6441-91-4)Related Product Information

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