What is Acid Blue 9 CAS 2650-18-2?
Acid Blue 9 is a blue-purple powder. It is soluble in water, with a solubility in water at 90℃ being 50g/L. The aqueous solution appears greenish-blue. When sodium hydroxide is added, it becomes almost colorless. Chemicalbook. Dark purple precipitates appear. It is soluble in ethanol. In concentrated sulfuric acid, it is orange, and after dilution, it turns pale yellow. During dyeing, it is sensitive to copper and iron ions, affecting the color and light.
Acid Blue 9 CAS 2650-18-2 Use
Acid Blue 9 and Acid Blue FG can be used for dyeing wool, silk, nylon, and wool blends, as well as for direct printing on wool and silk fabrics. The color is bright and the dyeing uniformity is good. When dyeing wool together with other fibers in a Chemicalbook bath, silk gets heavily stained, nylon shows significant color transfer, and acetate fiber and cellulose fiber show slight color transfer. This product is also used as a food dye and an organic pigment. It can also be used for coloring leather, paper, and other materials. It is suitable for dyeing and printing on silk, wool, and nylon.
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