Eosin B (C.I. 45400), 25 g, glass

45400) falls within a group of substances characterized by consistent performance in various applications. It is a sodium carboxylic acid salt with a molecular formula of C_{20}H_{14}NaO_{5}Cl and a Molecular Weight of 624.06 g/mol. This compound is structurally classified as a substituted carboxylic acid salt. Eosin B is commonly used as a fluorescent dye, demonstrating strong fluorescence under ultraviolet light. Additionally, it exhibits excellent stability in aqueous solutions, making it suitable for various biological staining procedures. Safety goggles and gloves should be worn when handling this substance due to its potential irritation to skin and eyes.

• CAS Number: 548-24-3