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Tartrazine

Tartrazine is a synthetic lemon yellowazo dye primarily used as a food coloring. It is also known as E numberE102, C.I.19140, FD&CYellow 5, Yellow 5 Lake, Acid Yellow 23, Food Yellow 4, and trisodium 1-(4-sulfonatophenyl)-4-(4-sulfonatophenylazo)-5-pyrazolone-3-carboxylate.

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