Specifications | |
---|---|
Assay (perchloric acid titration, calculated on dried substance) | ≥ 99.0 % |
Identity (IR-spectrum) | passes test |
Appearance | white or almost white, crystalline powder or colorless crystals |
Appearance of solution (50 g/l; water) | clear and colorless |
Spec. rotation (α 20/D, 40 g/l, water, calc. on dried substance) | -84.0 bis -86.0 |
Chloride (Cl) | ≤ 0.02 % |
Sulfate (SO₄) | ≤ 0.03 % |
Heavy metals (as Pb) | ≤ 0.001 % |
Ninhydrin-positive substances (LC) (any ninhydrin-positive impurity) | ≤ 0.2 % |
Ninhydrin-positive substances (LC) (ammonium (570 nm)) | ≤ 0.02 % |
Ninhydrin-positive substances (LC) (total impurities) | ≤ 0.5 % |
Loss on Drying (105°C) | ≤ 0.4 % |