Physical state at 20 °C | Solid | Colour | Blackish crystalline |
Flash point [°C] | 30 °C | Solubility in water [% weight] | Moderate (1-10%) |
Appearance | Brown to dark brown, blackish powder |
Dye content (titanometric) | Min 80% |
Absorption maxima in water | 617 – 620 nm |
Loss on drying (at 110°C) | Max 10% |
Suitability (as redox indicator) | Passes test |
Suitability (for electrophoresis) | Passes test |