E121 Citrus Red 2

Citrus Red 2 (Citrus Red 2, E121) — artificial food coloring. Chemical formula C18H16N2O3.


The powder is yellow to orange in color or dark red, with a melting point of 156 °C. Insoluble in water, but easily soluble in many organic solvents.

As a food additive, Citrus Red 2 has been used with FDA approval in the United States since 1956 to color the peel of some Florida oranges. Prohibited for use in our country.


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