Used as a dye in textile industries, particularly for dyeing wool, silk, cotton, and other cellulose fibers. It provides bright blue to blue-green shades with good light and wash fastness. This dye has good compatibility with negatively charged fibers, making it suitable for dyeing processes in mildly to moderately alkaline conditions. Also applied in leather dyeing for uniform coloring with moderate rub fastness. Commonly used in fabric printing and biological staining for microscopy due to its affinity for certain proteins and cellular components. Its water solubility makes it suitable for liquid dye formulations and industrial applications requiring color tracing.