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Erythrosine, also known as E127 and Red No. 3, is an organoiodine compound, specifically a derivative of fluorone. It is a red-pink dye used for food coloring, cosmetics, hair coloring, pet products, and diverse industrial colorings. [2] [3] It is the disodium salt of 2,4,5,7-tetraiodofluorescein. [2]
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The colour of the dye depends on the acidity of the solution. At a pH of +1.0, the dye is green with absorption maxima at 420 nm and 620 nm, while in a strongly acidic solution (pH −1.0), the dye is yellow with an absorption maximum at 420 nm. [citation needed] The different colours are a result of the different charged states of the dye ...
Red dye No. 3 was approved for use in U.S. food in 1907, when it was known as erythrosine. It won permanent listing as an authorized color additive for foods, supplements and ingested drugs under ...
Why is red dye 3 bad? In its alert, the FDA noted that red dye 3 was being banned “as a matter of law,” citing the Delaney Clause. But the agency stressed that human studies have not linked ...
Following the ban of red dye No. 3 in the United States, experts weigh in on the potential health risks of red dye No. 40, yellow dye No. 5 and others.
Acid Red 13: Fast red E Acid red 13 16045 azo 2302-96-7: Acid red 25 Acid red 25 16050 azo 5858-93-5: Acid red 88: Fast red A Acid red 88 15620 azo 1658-56-6: Acid Red 95 Erythrosine Y Diiodofluorescein Acid red 95 45425 xanthene 33239-19-9: Acridine orange: Euchrysine Basic Orange 14 46005 acridine: 494-38-2: Acridine red 3B 45000 pyronin 2465 ...
Allura Red AC, also known as FD&C Red 40 or E129, is a red azo dye commonly used in food. It was developed in 1971 by the Allied Chemical Corporation, who gave the substance its name. [1] [2] 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.