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LC4238 Neutral red (C.I. 50040)indicator and for microbiology |
| Order number | Packaging | Quantity | Price € |
| AC31238 | Glass bottle | 25 g | 55.8 |
| AC31238 | Glass bottle | 100 g | 203.4 |
| Product information | |
| Hill Formula | C15H17ClN4 |
| HS Code | 3204 13 00 |
| EC number | 209-035-8 |
| Molar mass | 288.78 g/mol |
| CAS number | 553-24-2 |
| Chemical and physical data | |
| Solubility | 50 g/l (25 °C) |
| Molar mass | 288.78 g/mol |
| Bulk density | 350 – 500 kg/m3 |
| pH value | 3.1 (10 g/l, H2O, 20 °C) |
| Safety information | |
| Storage class | 10 – 13 Other liquids and solids |
| WGK | WGK 3 highly 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. |
| Specifications | |
| Dye content (spectrophotometrically) | ≥ 75 % |
| Identity (UV/VIS-Spectrum) | passes test |
| Transition range | pH 6.8 – pH 8.0 Violet red – orange yellow |
| Absorption maximum λ max (ethanol 50 %) | 540 – 543 nm |
| Absorption maximum λ 1 (buffer pH 6.8) | 514 – 519 nm |
| Absorption maximum λ 2 (buffer pH 8.0) | 452 – 455 nm |
| Spec. Absorptivity A 1%/1cm – λ7m7ax; 0.005 g/l; ethanol 50 % |
1180 – 1610 |
| – λ17m7ax; 0.0015 %; buffer pH 6.8; calc. on dried substances | 425 – 575 |
| – λ27m7ax; 0.0015 %; buffer pH 8.0; calc. on dried substances | 395 – 535 |
| TLC-Test | passes test |
| Loss on drying (110 °C) | ≤ 18 % |
| Suitability for microbiology | passes test |
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