Used as an acid dye in the textile and leather industries for coloring protein fibers such as wool and silk, and synthetic fibers like nylon, providing deep black shades with excellent light and wet fastness. Commonly applied in dyeing apparel, upholstery, automotive textiles, and industrial fabrics where color durability is critical. Also utilized in ink formulations for printing on various surfaces, including plastics. Suitable for applications requiring resistance to UV degradation and chemical exposure. Proper handling and wastewater treatment are recommended to prevent environmental pollution.