Sunset yellow FCF or Orange yellow S is synthetic acid orange azo dye derived from petroleum. Sunset yellow FCF is used as an artificial color additive in food to give orange-yellow color. In U.S. when it is added to food products and sold it is denoted as Yellow 6, where else in Europe it is indicated by E 110 (E Number). The additive is similar to Allura red and tartrazine. The color of food is essential for ... Read more