Used as a red dye in the textile industry, particularly for dyeing wool, silk, and leather, imparting orange to red-brown shades with good lightfastness and washfastness. Also applied in the production of pigments for paints, inks, and plastics due to its color stability. Shows activity in biological staining applications and has been studied for photodynamic therapy owing to its photosensitizing ability to generate reactive oxygen species under light exposure. Additionally, it serves as an intermediate in the synthesis of more complex anthraquinone dyes and organic compounds.