Widely used in textile dyeing, especially for cotton and other cellulosic fibers, due to its excellent color fastness and reactivity under alkaline conditions. Commonly applied in the printing and dyeing industry for producing bright blue shades. Also utilized in paper dyeing and leather coloring. Its reactive nature allows it to form covalent bonds with the fiber, resulting in durable and wash-resistant coloration. Used in combination with other dyes to achieve a wide range of hues in fabric manufacturing.