Specifications | |
---|---|
Assay (complexometric; calculated on dried substance) | 99.0 - 101.0 % |
Assay (complexometric; calculated as dihydrate) | 99.0 - 101.0 % |
Identity (IR-spectrum) | passes test |
Identity (Complexation) | passes test |
Identity (Sodium) | passes test |
Appearance | passes test |
Appearance of solution (50 g/l; water) | passes test |
pH (10 g/l, water) | 4.3 - 4.7 |
pH (50 g/l; water) | 4.0 - 5.5 |
Cyanide (CN) | ≤ 1 ppm |
Heavy metals (as Pb) | ≤ 10 ppm |
As (Arsenic) | ≤ 1 ppm |
Ca (Calcium) | passes test |
Fe (Iron) | ≤ 5 ppm |
Nitrilotriacetic acid (HPLC) | ≤ 0.1 % |
Methanol (HS-GC) | ≤ 3000 ppm |
Other residual solvents (Ph.Eur./USP/ICH) | passes test |
Loss on drying (150 °C; 6 h) | 8.7 - 11.4 % |
Sulfated ash (600 °C) | 37.0 - 39.0 % |