| 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 |
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Key Spec Table
| CAS # | EC Number | Hill Formula | Molar Mass |
|---|---|---|---|
| 17372-87-1 | 241-409-6 | C₂₀H₆Br₄Na₂O₅ | 691.86 g/mol |
| 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 |
| Structure formula Image | |
| Applications | |
|---|---|
| Application | Eosin Y (yellowish) (C.I. 45380) for microscopy Certistain®. CAS 17372-87-1, pH 9.2 (10 g/l, H₂O, 20 °C). MSDS and product info below. |
| 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 |
| Safety Information according to GHS | |
|---|---|
| Hazard Pictogram(s) |  |
| Hazard Statement(s) | H319: Causes serious eye irritation. |
| Precautionary Statement(s) | P260: Do not breathe dust. P305 + P351 + P338: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. |
| Storage class | 10 - 13 Other liquids and solids |
| WGK | WGK 2 water endangering |
| Disposal | 3 Relatively unreactive organic reagents should be collected in container A. If halogenated, they should be collected in container B. For solid residues use container C. |
| Safety Information | |
|---|---|
| Hazard Symbols |  Irritant |
| Categories of danger | irritant |
| R Phrase | R 36 Irritating to eyes. |
| S Phrase | S 22-26 Do not breathe dust.In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. |
| Storage and Shipping Information | |
|---|---|
| Storage | Store at +5°C to +30°C. |
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