Eosin Y 25grm
Eosin Y (yellowish) (C.I. 45380) for microscopy Certistain®. CAS 17372-87-1, pH 9.2 (10 g/l, H₂O, 20 °C).
Manufacturer: Merck
Catalog ID: 115935.0025
Stock: In Stock
Description
| Catalogue Number | 115935 |
| Description | EOSIN Y (YELLOWISH)(C.I. 45380) FOR MICR |
| Overview | Eosin Y (C.I. 45380) is a CERTISTAIN® dry dye for microscopy that is often used as a counterstain, vizualising proteins, connective tissues, fibers and keratin in sample material of human origin. Depending on user requirements and personal preferences, it can be used for the preparation of the commonly used aqueous or alcoholic Eosin Y staining solutions. This staining solution will mostly be used for routine staining in the hematoxylin-eosin staining process (H&E). The H&E staining process is the most frequently used staining method for histological material. Due to the hematoxylin solution, the nuclei will appear blue to dark violet in color and the Eosin Y solution will stain the cytoplasma and intercellular substances red-orange. As the Eosin Y dye belongs to the portfolio of Certistain® dyes, it is chemically analyzed according to strict specifications before release (CE marked and IVD product) and a high staining quality, with reliable staining results is guaranteed. |
Product Information
| CAS number | 17372-87-1 |
| EC number | 241-409-6 |
| Hill Formula | C₂₀H₆Br₄Na₂O₅ |
| Molar Mass | 691.86 g/mol |
| HS Code | 3204 12 00 |
Applications
| Application | Eosin Y (yellowish) (C.I. 45380) for microscopy Certistain®. CAS 17372-87-1, pH 9.2 (10 g/l, H₂O, 20 °C). |
Physicochemical Information
| Melting Point | 295 - 296 °C |
| pH value | 9.2 (10 g/l, H₂O, 20 °C) |
| Bulk density | 710 kg/m3 |
| Solubility | 300 g/l |
Toxicological Information
| LD 50 oral | LD50 Rat > 2000 mg/kg |
Storage and Shipping Information
| Storage | Store at +5°C to +30°C. |
Specifications
| Dye content (gravimetrically) | ≥ 85 % |
| Identity (UV/VIS-Spectrum) | passes test |
| Absorption maximum λ max (water) | 515 - 518 nm |
| Spec. Absorptivity A 1%/1cm (λmax; 0.005 g/l; water) | 1200 - 1400 |
| TLC-Test | passes test |
| Loss on drying (110 °C) | ≤ 8 % |
| Suitability for microscopy | passes test |
