FD&C Yellow No 5 FD&C Yellow No 6

FD&C Yellow No. 5 (also known as Tartrazine) and FD&C Yellow No. 6 (also known as Sunset Yellow FCF) are synthetic color additives. They are manufactured from petroleum-based raw materials through chemical synthesis.

These dyes are used to impart yellow and orange colors to a wide variety of foods and beverages. They are commonly found in products like candies, snack foods, soft drinks, and baked goods to enhance their visual appeal.

FD&C Yellow No. 5 and FD&C Yellow No. 6 are approved by the FDA for use as color additives in food. In April 2025, the FDA announced a plan to phase out petroleum-based synthetic dyes, which includes Yellow 5 and Yellow 6. JECFA has evaluated both dyes and set an acceptable daily intake. EFSA has also evaluated these dyes. Some studies have suggested a possible link between synthetic food dyes, including Yellow 5 and Yellow 6, and hyperactivity in some children. However, the evidence is mixed, and the FDA states that for the general population, the evidence does not show a causal link between these dyes and hyperactivity, though some children may be sensitive.