| send us an inquiry |
LC1907 Eriochrome blue-black B (C.I. 14640)metal indicator |
| Order number | Packaging | Quantity | Price € |
| AC28907 | Glass bottle | 25 g | 22.5 |
| Product information | |
| Synonyms | 2-Hydroxy-1-(1-hydroxy-2-naphthylazo)-naphthalene-4-sulfonic acid sodium salt |
| Hill Formula | C20H13N2NaO5S |
| HS Code | 3204 19 00 |
| EC number | 222-639-6 |
| Molar mass | 416.39 g/mol |
| CAS number | 3564-14-5 |
| Chemical and physical data | |
| Solubility | 20 g/l (20 °C) |
| Molar mass | 416.39 g/mol |
| Bulk density | 540 kg/m3 |
| pH value | 9.5 (10 g/l, H2O, 20 °C) |
| Safety information according to GHS | |
| Hazard Statement(s) | H319: Causes serious eye irritation. |
| Precautionary Statement(s) | P305 + P351 + P338: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. |
| Signal Word | Warning |
| Hazard Pictogram(s) |  |
| RTECS | QK2195000 |
| 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 | |
| R Phrase | R 36 Irritating to eyes. |
| Categories of danger | irritant |
| Hazard Symbol |
|
| Toxicological data | |
| LD 50 oral | LD50 rat > 5000 mg/kg |
| Specifications | |
| Identity (UV/VIS-Spectrum) | passes test |
| Absorption maximum λ max (buffer pH 10.0) | 634 – 644 nm |
| Spec. Absorptivity A 1%/1cm (λ7m7ax; 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 |
 |