Thorin Indicator 5Grm
indicator for sulfate titration
Manufacturer: Merck
Catalog ID: 108294.0005
Stock: In Stock
Description
| Catalogue Number | 108294 |
| Synonyms | 1-(2-Arsonophenylazo)-2-hydroxy-3,6-naphthalene-disulfonic acid sodium salt, 2-(2-Hydroxy-3,6-disulfo-1-naphthylazo)-benzene-arsonic acid sodium salt |
Product Information
| CAS number | 3688-92-4 |
| EC index number | 033-002-00-5 |
| EC number | 222-993-1 |
| Hill Formula | C₁₆H₁₁AsN₂Na₂O₁₀S₂ |
| Molar Mass | 576.3 g/mol |
| HS Code | 2931 90 00 |
Physicochemical Information
| pH value | 6.1 (10 g/l, H₂O, 20 °C) |
| Bulk density | 700 kg/m3 |
Storage and Shipping Information
| Storage | Store at +5°C to +30°C. |
Specifications
| Identity (UV/VIS-Spectrum) | passes test |
| Absorption maximum λmax. (Propan-2-ol) | 480 - 490 nm |
| Spec. Absorptivity A 1%/1cm (λmax; 0.025 g/l; propan-2-ol; calc. on anhydrous substance) | 250 - 350 |
| Water (according to Karl Fischer) | ≤ 25 % |
| Suitability as indicator (for sulfate titration) | passes test |
