Solvent Orange 7, widely known as Sudan II, is a classic oil-soluble azo dye. It produces a rich, reddish-orange shade and is highly valued for its excellent solubility in hydrocarbons, oils, and fats. It is a versatile and economical colorant used to impart a strong, warm orange color to a wide variety of industrial products, from lubricants and waxes to plastics and stains.
