Citrus Red 2

Properties

Citrus Red 2 is an orange to yellow solid or a dark red powder with a melting point of 156 °C. It is not soluble in water, but is readily soluble in many organic solvents.

Use

In the United States, Citrus Red 2 has sometimes been used to color orange peels, subject to a limit of 2 milligrams per kilogram of oranges. It is permitted when the fruit is intended to be eaten, but not when the fruit is intended for processing; for example, to manufacture orange juice.

On April 22, 2025, the FDA announced plans to phase out synthetic food dyes by the end of 2026. This decision, led by FDA Commissioner Martin Makary, was driven by growing concerns over the potential health risks associated with synthetic food dyes. As part of this phase-out, the FDA revealed its intention to revoke approval for Citrus Red 2, along with another restricted-use dye, Orange B.

References

References

1. "21 CFR 74.302 -- Citrus Red No. 2.".
2. [http://monographs.iarc.fr/ENG/Classification/ClassificationsGroupOrder.pdf Agents Classified by the IARC Monographs] {{Webarchive. link. (2011-10-25 , [[International Agency for Research on Cancer). IARC]]
3. Choi, Joseph. (2025-04-22). "FDA announces plans to phase out petroleum-based food dyes".