Acid Green 9 is widely used in the textile industry for dyeing wool, silk, and nylon, providing vibrant green shades with good colorfastness. It is also employed in the leather industry to color leather products, ensuring consistent and durable coloration. Additionally, it finds application in the paper industry for tinting paper products, offering a bright and stable green hue. In biological staining, it is utilized as a dye for microscopic analysis, aiding in the visualization of specific cellular components. Its versatility and effectiveness make it a valuable dye in various industrial and scientific applications.