Solvent Red 24, famously known as Sudan IV, is an oil-soluble disazo dye that produces a deeper, more bluish-red shade compared to Sudan III. It is highly effective for coloring nonpolar substances and is widely used in industrial applications. Its strong, intense color and excellent solubility in oils and hydrocarbons make it a reliable and economical choice for achieving deep, durable red shades in waxes, greases, and plastics.