Xylenol Orange tetrasodium salt
About This Item
| Product Name | Xylenol Orange tetrasodium salt |
| Product Code | 265450 |
| Appearance | Red-brown to dark brown crystalline powder |
| Formula | C₃₁H₂₈N₂Na₄O₁₃S |
| EC-No. | 222-805-8 |
| CAS-No. | 3618-43-7 |
| Molecular Weight | 760.59 |
| Grade | ACS Reagent |
Specification
| Colour | Red brown, dark brown |
| Odour | Odourless |
| Melting point | 210 °C |
| Flammability | Non flammable |
| Decomposition temperature | > 200 °C |
| pH | 8.1 at 20 °C |
| pH solution concentration | 1% |
| Solubility | Water: 510 g/l at 20 °C – Soluble in water |
| Absorption maxima (0.1N NaOH) | 575 – 585 nm |
| Loss on drying (at 105°C; 1 hr) | Max 7% |
| Solubility (0.1% in 0.1 N NaOH) | Clear reddish to violet |
| Absorptivity (A 1%/1cm; at λmax) | Min 550 |
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