Yellow #5 Aluminum Lake

Yellow #5 Aluminum Lake is a synthetic color additive. It is made by combining the water-soluble dye Yellow #5 (also known as Tartrazine) with an aluminum hydroxide substrate. This process creates an insoluble pigment, making it suitable for coloring products with low moisture or high fat content.

Manufacturers add Yellow #5 Aluminum Lake to provide a yellow color to food products. Its insoluble nature helps prevent color bleeding. It is commonly found in baked goods, confectionery, frostings, and coatings.

In the United States, Yellow #5 Aluminum Lake is an FDA-approved color additive. The dye Yellow #5 (Tartrazine) has been evaluated by JECFA, which set an acceptable daily intake. EFSA has also evaluated Tartrazine. Some studies suggest a possible link between synthetic food dyes, including Yellow #5, and hyperactivity in some children, though the evidence is mixed and not conclusive for all individuals. A small number of people may experience allergic reactions, such as hives or asthma, particularly those sensitive to aspirin. In April 2025, the FDA announced a plan to phase out petroleum-based synthetic dyes, including Yellow #5.