A bright red synthetic dye used in food coloring, cosmetics, and textiles, also called FD&C Red No. 3.
From Greek 'erythros' (red) + '-in' (chemical compound suffix). Synthesized in the 19th century and named for its vivid red color.
That bright red in some candies and cosmetics is likely erythrosin—the dye has been so widely used that it's actually been banned or restricted in several countries due to health concerns, making it a surprisingly controversial chemical.
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