Red 40 & the Last Groovement
Allura Red AC is an organic compound classified as an azo compound and a disulfonate. Also known as FD&C Red 40 or E129, it is a red dye commonly used in food. It is usually supplied as its red sodium salt but can also be used as the calcium and potassium salts. These salts are soluble in water. In solution, its maximum absorbance lies at about 504 nm.
Allura Red AC was originally created by the Allied Chemical Corporation in 1971. In the European Union, it is approved, but it must carry a warning label. The US Food and Drug Administration considers it safe for use in food, drugs, and cosmetics. It has faced increasing pressure for removal from food in some areas, with California banning it in public schools.
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