Rhodamine B

• (9 - (2- carboxyphenyl ) -3,6 -bis ( diethylamino) xanthyliumchlorid )
• C. I. 45170

Greenish, odorless powder, dissolved in water red to purple

Fixed

199-201 ° C

> 245 ° C ( decomposition)

• Slightly soluble in water: 15 g · l -1 ( 20 ° C)
• Soluble in ethanol and benzene

Risk

887 mg · kg -1 ( LD50, mouse, oral)

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Rhodamine B is a dye which is used in the auramine - rhodamine stain, for dyeing tests and as a non-specific fluorescent markers. The absorption maximum between 542-554 nm