Eosin Y
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This article is compiled based on the United States Pharmacopeia (USP) – 2025 Edition
Issued and maintained by the United States Pharmacopeial Convention (USP)
(Indicator grade Eosin Y, Sodium tetrabromofluorescein), C20H6Br4Na2O5 —691.86 [17372-87-1]—Red to brownish-red pieces or powder. One g dissolves in about 2 mL of water and in 50 mL of alcohol. Dye content about 80%.
