Eosin Y disodium salt
SIAL/E4382 - certified by the Biological Stain Commission
Synonym: 2′,4′,5′,7′-Tetrabromofluorescein disodium salt; Acid Red 87; Bromo acid J. TS, XL, or XX; Bromofluorescein; Bronze Bromo ES; D&C;Red No. 22; Eosin yellowish
CAS Number: 17372-87-1
Empirical Formula (Hill Notation): C20H6Br4Na2O5
Molecular Weight: 691.85
EC Number: 241-409-6
MDL Number: MFCD00005040
Linear Formula: C20H6Br4Na2O5
Product Type: Chemical
This picture is provided solely for illustration purposes. Optical properties of the actual product may deviate. Relevant product information is printed on labeled products and other accompanying or available information material. This image depicts SKU: E4382-100G
This picture is provided solely for illustration purposes. Optical properties of the actual product may deviate. Relevant product information is printed on labeled products and other accompanying or available information material. This image depicts SKU: E4382-25G
| application(s) | diagnostic assay manufacturing hematology histology |
| color | brown |
| composition | Dye content, ≥90% |
| density | 1.018 g/cm3 |
| form | powder |
| grade | certified by the Biological Stain Commission |
| InChI | 1S/C20H8Br4O5.2Na/c21-11- |
| InChI key | SEACYXSIPDVVMV-UHFFFAOYSA |
| mp | 255 — 270 °C (491 - 518 °F at 977.9 hPa) |
| pH | 6.55 (29 °C, 84 °F) |
| Quality Level | 200  |
| SMILES string | [Na+].[Na+].[O-]C(=O)c1cc |
| solubility | H2O: 1 mg/mL |
| storage temp. | room temp |
| Application: | Eosin Y disodium salt has been used as a counterstain in immunocytochemistry and immunohistochemistry. |
| Biochem/physiol Actions: | 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. |
| Packaging: | 25, 100 g in glass bottle |
| Suitability: | Certified for use as a counterstain against hematoxylin; as a constituent of Wright stain; in modified Nocht′s stain; as a constituent in eosin-methylene blue medium. |
| Symbol |  GHS07 |
| Signal word | Warning |
| Hazard statements | H317 - H319 |
| Precautionary statements | P261 - P264 - P272 - P280 - P302 + P352 - P305 + P351 + P338 |
| Hazard Codes | Xi |
| Risk Statements | 36 |
| Safety Statements | 26 |
| RIDADR | NONH for all modes of transport |
| WGK Germany | WGK 3 |
| Flash Point(F) | 376.9 °F - Pensky-Martens c |
| Flash Point(C) | 191.6 °C - Pensky-Martens c |
| mp | 255 — 270 °C (491 - 518 °F at 977.9 hPa) |
| Density | 1.018 g/cm3 |
| Storage Temp. | room temp |
| Colour Index Number | 45380 |
| UNSPSC | 12171500 |