| Specifications |
| Assay (HClO4 titration) |
Min 99% |
| Specific rotation (d) 20 deg (C=4 in
6M HCl calculated on anhydrous substance) |
+14.9 to +16.50 deg |
| pH
of 1% solution |
5.5 - 7.0 |
| Appearance of solution |
Passes test |
| Insoluble matter in HCl 1 mol/l |
Passes test |
| Loss on drying (at 105 deg C) |
Max 0.2% |
| Residue on ignition (as SO4) |
Max 0.1% |
| Chloride (Cl) |
Max 0.02% |
| Sulphate (SO4) |
Max 0.03% |
| Iron (Fe) |
Max 0.001% |
| Heavy metals (as Pb) |
Max 0.001% |
| Ammonium (NH4) |
Max 0.02% |
| Foreign amino acids |
Max 0.3% |
| Other ninhydrin-positive substances
(as glycine) |
Max 0.1% | |
|
