Eriochrome Blue-Black B(C.I.14640) Metal Ind 25Grm
metal indicator
Manufacturer: Merck
Catalog ID: 103168.0025
Stock: In Stock
Description
| Catalogue Number | 103168 |
| Synonyms | 2-Hydroxy-1-(1-hydroxy-2-naphthylazo)-naphthalene-4-sulfonic acid sodium salt |
Product Information
| CAS number | 3564-14-5 |
| EC number | 222-639-6 |
| Hill Formula | C₂₀H₁₃N₂NaO₅S |
| Molar Mass | 416.39 g/mol |
| HS Code | 3204 19 00 |
Physicochemical Information
| pH value | 9.5 (10 g/l, H₂O, 20 °C) |
| Bulk density | 540 kg/m3 |
| Solubility | 20 g/l |
Toxicological Information
| LD 50 oral | LD50 Rat > 5000 mg/kg |
Storage and Shipping Information
| Storage | Store at +15°C to +25°C. |
Specifications
| Identity (UV/VIS-Spectrum) | passes test |
| Absorption maximum λmax. (buffer pH 10.0) | 634 - 644 nm |
| Spec. Absorptivity A 1%/1cm (λmax; 0.025 g/l; buffer pH 10.0; calculated on anhydrous substance) | 220 - 320 |
| Loss on drying (110 °C) | ≤ 10 % |
| Suitability as indicator (for metal titration) | passes test |
