Eosin Y Free Acid, 96+% (Dye content) (Solvent Red 43)

Eosin Y is a xanthene dye and is used for the differential staining of connective tissue and cytoplasm. In histopathology, it is applied as a counterstain after hematoxylin and before methylene blue. It is also used as a background stain, thereby giving contrast to the nuclear stains.

Synonyms:
Solvent Red 43; 2′,4′,5′,7′-Tetrabromofluorescein; Acid Red 87; Bromofluorescein; Bronze Bromo ES; Eosin yellowish

CAS No:
15086-94-9

Molecular Formula:
C20H8Br4O5

Molecular Weight:
647.89

Appearance:
Light orange powder

Purity:
≥96% (Dye content)

Solubility:
Clear orange-yellow solution with fluoresence (0.1% in Methanol)

Storage and Stability:
May be stored at RT.