Naphthol Green B is widely used in the textile industry as a dye for coloring cotton, wool, and silk, providing a green hue that is both vibrant and durable. It is also employed in biological staining, particularly in histology, to highlight specific tissue structures under microscopic examination. In the paper industry, it serves as a coloring agent for various types of paper products. Additionally, Naphthol Green B finds application in the manufacturing of inks, where it contributes to the production of green-colored printing inks. Its stability and colorfastness make it a preferred choice in these industries.