Acid orange 8

The Uses of Acid orange 8

Acid Orange 8 is a dye/stain. Dyes and metabolites.

Preparation

4-Amino-3-methylbenzenesulfonic acid?diazo, and Naphthalen-2-ol coupling.

Flammability and Explosibility

Non flammable

Purification Methods

Salt it out three times with sodium acetate, then extract it repeatedly with EtOH and dry.

Properties and Applications

red light orange. For red orange is soluble in water, soluble in soluble fiber element, slightly soluble in ethanol and acetone, insoluble in other organic solvents. The strong sulfuric acid for blue-ray in red, yellow and orange solution diluted into and precipitation; In nitric acid solution for wine red and then into orange. Its water solution and strong hydrochloric acid is cherry red; Add sodium hydroxide with brown precipitation. Used for wool, silk, cotton, vinegar, polyamide fiber and fiber dyeing. Also used for paper, leather dyeing, the heavy metal salt used in organic pigments.