Widely used in the textile industry for dyeing cotton and other cellulosic fabrics, providing deep black shades with good color fastness. Commonly applied in batch dyeing processes for apparel and home textiles. Also utilized in paper printing and leather coloring due to its strong staining properties and uniform color distribution. Suitable for use in ink formulations where intense black color is required. Performs well under normal light exposure, though prolonged sunlight may cause slight fading.