Eriochrome Black T 100grm
indicator for complexometry ACS,Reag. Ph Eur
Manufacturer: Merck
Catalog ID: 103170.0100
Stock: In Stock
Description
| Catalogue Number | 103170 |
| Replaces | EX0100-5; EX0100 |
| Synonyms | Chrome black T, 2-Hydroxy-1-(1-hydroxy-2-naphthylazo)-6-nitronaphthalene-4-sulfonic acid sodium salt |
Product Information
| CAS number | 1787-61-7 |
| EC number | 217-250-3 |
| Grade | ACS,Reag. Ph Eur |
| Hill Formula | C₂₀H₁₂N₃NaO₇S |
| Molar Mass | 461.38 g/mol |
| HS Code | 3204 19 00 |
Physicochemical Information
| pH value | 3.7 (10 g/l, H₂O, 20 °C) |
| Bulk density | 400 - 600 kg/m3 |
| Solubility | 50 g/l |
Toxicological Information
| LD 50 oral | LD50 Rat 17590 mg/kg |
Storage and Shipping Information
| Storage | Store at +15°C to +25°C. |
Specifications
| Identity (UV/VIS-Spectrum) | passes test |
| Appearance | Black to dark brown-black fine powder, eventually with granular parts |
| Clarity of solution | passes test |
| Absorption maximum λmax. (buffer pH 10.0) | 612 - 616 nm |
| Spec. Absorptivity A 1%/1cm (λmax; 0.02 g/l; buffer pH 10.0; calc. on dried substance) | 400 - 510 |
| Loss on drying (110 °C) | ≤ 7 % |
| Suitability as indicator (for complexometric titration, ACS) | passes test |
| Suitability as indicator (Reag. Ph. Eur.) | passes test |
