1.

How phenol is converted into Fluorescein?

Answer»

Explanation:

Fluorescein - Wikipedia

Fluorescein was first SYNTHESIZED by Adolf von Baeyer in 1871. It can be prepared from phthalic anhydride and resorcinol in the presence of zinc chloride via the Friedel-Crafts REACTION. A SECOND method to prepare fluorescein uses methanesulfonic ACID as a Brønsted acid catalyst.

Solubility in water: Slightly

Chemical formula: C20H12O5

Melting point: 314 to 316 °C (597 to 601 °F; 587 to 589 K)

Density: 1.602 g/mL

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