Fluorescein-Sodium 50gm
indicator Reag. Ph Eur
Manufacturer: Merck
Catalog ID: 103887.0050
Stock: In Stock
Description
| Catalogue Number | 103887 |
Product Information
| CAS number | 518-47-8 |
| EC number | 208-253-0 |
| Grade | Reag. Ph Eur |
| Hill Formula | C₂₀H₁₀Na₂O₅ |
| Molar Mass | 376.27 g/mol |
| HS Code | 3204 12 00 |
Physicochemical Information
| Melting Point | >300 °C |
| pH value | 8.3 (10 g/l, H₂O, 20 °C) |
| Bulk density | 600 kg/m3 |
| Solubility | 500 g/l |
Toxicological Information
| LD 50 oral | LD50 Rat 6720 mg/kg |
Storage and Shipping Information
| Storage | Store at +5°C to +30°C. |
Specifications
| Appearance | Redishbrown powder, eventually with granular and bright parts. |
| Identity (UV/VIS-Spectrum) | passes test |
| Identity (IR-spectrum) | passes test |
| Absorption maximum λmax. (buffer pH 8.0) | 490 - 492 nm |
| Spec. Absorptivity A 1%/1cm (λmax; 0.005 g/l; buffer pH 8.0; calc. on dried substance) | ≥ 1850 |
| Loss on drying (110 °C) | ≤ 10 % |
| Suitability as indicator (Adsorption indicator for argentometry) | passes test |
