Specifications :

• Assay (ex N, calc. on dried substance) : 98.5 – 101.5 %
• Identity (IR-spectrum) : passes test
• Appearance : white to almost white, fine-crystalline powder
• Appearance of solution (100 g/l, hydrochloric acid  2 mol/l) : clear and not more intense in color than reference solution Y₇
• Spec. rotation (α 20/D, 20 g/l, hydrochloric acid 1 mol/l, previously dried substance) : -215 to -225
• Heavy metals (as Pb) : ≤ 10 ppm
• Pb (Lead) : ≤ 5 ppm
• Ninhydrin – positive substances (LC) (largest single impurity) : ≤ 0.2 %
• Ninhydrin – positive substances (LC) (Sum of all impurities) : ≤ 0.5 %
• Sulfated ash (800 °C) : ≤ 0.1 %
• Loss on drying (105 °C; 3 h) : ≤ 0.2 %