Eozina

Eozina is a synthetic eosin dye, a member of the fluorescein family of dyes. Its chemical name is tetrabromofluorescein. Eozina is characterized by its brilliant red or pink color and its fluorescence under ultraviolet light. It is soluble in water and alcohol. Historically, eozina has found applications in various fields due to its staining properties.

One of its primary uses has been as a biological stain, particularly in histology and microscopy. Eozina stains cytoplasm, collagen, and muscle fibers pink or red, making them visible under a microscope. This contrast staining is often used in conjunction with other stains, such as hematoxylin, in common laboratory procedures like the H&E stain. Beyond biological applications, eozina has also been used as a colorant in inks, cosmetics, and some food products, although its use in food has become less common due to regulatory changes and the availability of alternative colorants. Its vibrant color and fluorescent properties continue to make it a useful tool in scientific research and certain industrial applications.