Color Glossary

Indigo carmine
See Indigotine.
A chemical class of colorants characterized by the basic indigo structure.
See FD&C Blue #2.
Ingredient Sensitivity
Occurs when an ingredient has an undesirable effect on an individual when ingested. Ingredient sensitivity is not the same thing as a food allergy, although both are rare. Individuals with ingredient sensitivity will generally be advised to avoid consuming foods containing the specific ingredient.
Iron Oxide
An exempt from certification pigment derived from mineral sources. Food grade iron oxide is available in red, yellow, and black shades. Iron Oxide is an extremely stable pigment and resists degradation from heat, light, and changes in pH.