Physical state at 20 °C | Solid | Odour | Odorless |
Solubility in water [% weight] | Soluble in water | Colour | Garnet red powder |
Appearance | Orange to brown and very dark red brown powder |
Iron content | 18 – 20% |
Chloride (Cl) | Max 0.05% |
Ammonium (NH4) | Max 0.5% |
Arsenic (As) | Max 0.0005% |
Cadmium (Cd) | Max 0.005% |
Copper (Cu) | Max 0.005% |
Lead (Pb) | Max 0.005% |
Zinc (Zn) | Max 0.005% |