: a brick-red powdered xanthene dye C20H6I4Na2O5 that is used as a biological stain and in dentistry as an agent to disclose plaque on teeth

called also erythrosine sodium

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“Erythrosine.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/erythrosine. Accessed 8 Jul. 2026.

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