| Assay (perchloric acid titration) |
99.0 - 101.0 % |
| Assay (perchloric acid titration, calculated on dried substance) |
99.0 - 101.0 % |
| Identity |
passes test |
| Appearance of solution |
passes test |
| Insoluble matter |
≤ 0.005 % |
| pH-value (5 %; water) |
7.5 - 9.0 |
| Chloride (Cl) |
≤ 0.0005 % |
| Phosphate (PO₄) |
≤ 0.0002 % |
| Sulfate (SO₄) |
≤ 0.002 % |
| Total nitrogen (N) |
≤ 0.001 % |
| Heavy metals (as Pb) |
≤ 0.0005 % |
| Al (Aluminium) |
≤ 0.0005 % |
| As (Arsenic) |
≤ 0.0002 % |
| Ca (Calcium) |
≤ 0.001 % |
| Cu (Copper) |
≤ 0.0003 % |
| Fe (Iron) |
≤ 0.0005 % |
| K (Potassium) |
≤ 0.005 % |
| Mg (Magnesium) |
≤ 0.0005 % |
| Pb (Lead) |
≤ 0.0005 % |
| Calcium and Magnesium (as Ca) |
≤ 0.005 % |
| Substances reducing permanganate |
passes test |
| Reducing substances |
≤ 0.005 % |
| Loss on drying (130 °C) |
39.0 - 40.5 % |
| UV absorption (254 nm; 1 mol/l; 1 cm; water) |
≤ 0.02 |
| UV absorption (280 nm; 1 mol/l; 1 cm; water) |
≤ 0.01 |
| UV absorption (350 nm; 1 mol/l; 1 cm; water) |
≤ 0.01 |
| Corresponds to ACS,ISO,Reag. Ph Eur |
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