Description
Eosin Y (C.I. 45380), for microscopy, Molar mass (M) 691,86 g/mol, Density (D) 0,78 g/cm³, CAS No. 17372-87-1, EC No. 241-409-6, Empirical formula C20H6Br4Na2O5
Eosin Y is a slightly acid fluorescent dye, which stains cytoplasm red. It is soluble in alcohol and water (usual concentrations: 0.5-2.0 %). Manifold use, e.g. for hematoxylin-eosin (H&E) staining, spore staining etc.
Excitation maximum: 534 nmEmission maximum: 544 nm
Technical Information
| Dyeing | damaged cells red |
| Absorption maximum | 534 nm |
| Emissions maximum | 544 nm |
| Colour conversion | yellow - red |
| Transition range pH | 0,0 - 3,0 |
| Use | vitality test of spermatozoa |