Azo pigments are a class of synthetic colorants widely used in various applications, including paints, plastics, and inks. They are characterized by their vibrant colors and excellent lightfastness, which means they resist fading when exposed to sunlight. Azo pigments are derived from azo compounds, which contain a nitrogen-nitrogen double bond (N=N) in their chemical structure. These pigments are popular due to their versatility and cost-effectiveness. They can produce a wide range of colors, from bright yellows to deep reds. Additionally, azo pigments are often used in textiles and cosmetics, making them an essential component in many industries that require durable and stable coloring agents.