Physical state at 20 °C | Solid | Odour | Odorless |
Melting point/ Freezing point [°C] | 248°C | Solubility in water [% weight] | 100 g/l at 20 °C |
Colour | White crystalline | pH value | 4 – 5 at 10 g/l at 23 °C |
Flash point [°C] | > 100 °C |
Appearance | White crystalline powder |
Assay (complexometric; on dried basis) | 99 – 101% |
pH (5% solution in water) | 4-5 |
Heavy metal (as Pb) | Max 0.001% |
Iron (Fe) | Max 0.0005% |
Copper (Cu) | Max 0.00025% |
Insoluble matter in water | Max 0.005% |
Nitrilotriacetic acid | Max 0.05% |
Chloride (Cl) | Max 0.01% |
Sulphate (SO4) | Max 0.02% |
Calcium (Ca) | Max 0.002% |
Nickel (Ni) | Max 0.0005% |
Lead (Pb) | Max 0.0005% |
Loss on drying (at 150°C; 6 hrs) | 8.7-11.4% |