Physical state at 20 °C | Solid | Colour | Reddish brown |
Melting point/ Freezing point [°C] | 300 °C | Solubility in water [% weight] | Slightly soluble in water |
Vapour density | 19.2 |
Appearance | Brownish red colored fine powder |
Melting point | ~300 deg C |
Absorption maxima | 554 – 560 nm |