Erio Green B is primarily used as a dye in various industrial and laboratory applications. It is commonly employed in textile dyeing processes, where it imparts a green color to fabrics. The dye is also utilized in biological staining, particularly in microscopic studies to highlight specific cellular structures or tissues. Additionally, Erio Green B finds application in the paper industry for coloring paper products. Its stable and vibrant color properties make it suitable for use in inks and coatings as well. In some cases, it is used as an indicator in chemical reactions due to its ability to change color under specific conditions.