Sudan I is primarily used as a dye in various industrial applications. It is commonly employed in coloring products such as solvents, oils, waxes, polishes, plastics, textiles, and leather, providing a vibrant red or orange hue. Its strong coloring properties, including high durability to light and heat, make it suitable for products where long-lasting and intense coloration is desired. In the past, it was also used in certain food products to enhance color, but its use in food has been banned in many countries due to health concerns, including potential carcinogenic effects. Additionally, in laboratory settings, Sudan I is used as a stain for fats and oils in microscopy and as an indicator in chemical experiments to detect reactions or substance changes. Due to its toxicity, its use is now strictly regulated and limited to non-edible and controlled applications.