
Acid Red 18
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Acid Red 18 (Ponceau 4R, Cochineal Red A, CI 16255) is one of the rarely allowable azo synthetic dyes and is often used in dyeing drink, food, tobacco, textile, medicine and cosmetics. The name describes the structure of the molecule "Ponceau" is a French term referring to a bright red color. "4R" specifically identifies this variant within the...