Methyl Red Indicator 25grm
indicator ACS,Reag. Ph Eur
Manufacturer: Merck
Catalog ID: 106076.0025
Stock: In Stock
Description
| Catalogue Number | 106076 |
| Synonyms | 4-Dimethylaminoazobenzene-2'-carboxylic acid |
Product Information
| CAS number | 493-52-7 |
| EC number | 207-776-1 |
| Grade | ACS,Reag. Ph Eur |
| Hill Formula | C₁₅H₁₅N₃O₂ |
| Molar Mass | 269.31 g/mol |
| HS Code | 2927 00 00 |
Physicochemical Information
| Melting Point | 178 - 182 °C |
| Bulk density | 300 - 500 kg/m3 |
Storage and Shipping Information
| Storage | Store at +5°C to +30°C. |
Specifications
| Identity (UV/VIS-Spectrum) | passes test |
| Appearance | Red to red-violet powder, eventually with granular parts. |
| Clarity of solution (1 g/l; ethanol) | passes test |
| Melting point (capillary method, temperatur measerment in the heating block) | 179 - 182 °C |
| Transition range | pH 4.4 - pH 6.0 Red - yellow |
| Absorption maximum (buffer pH 4.5) | 523 - 526 nm |
| Absorption maximum (buffer pH 6.2) | 427 - 437 nm |
| Spec. Absorptivity A 1%/1cm (λmax; 0.005 g/l; buffer pH 4.5; calculated on anhydrous substance) | 1350 - 1500 |
| Spec. Absorptivity A 1%/1cm (λmax; 0.005 g/l; buffer pH 6.2; calculated on anhydrous substance) | 700 - 800 |
| Transition range (according to ACS) | passes test |
| Loss on drying (110 °C) | ≤ 5 % |
