Description

• Analysis Note: Assay (perchloric acid titration, calculated on dried substance): ≥ 99.0 %Identity (IR-spectrum): passes testAppearance: white to almost white, crystalline powder or flakesAppearance of solution (1 mol/l, hydrochloric acid 1 mol/l): clear and colorlessSpec. rotation (α 20/D, 50 g/l, hydrochloric acid 1 mol/l, calc. on dried substance): +36.2 to +37.2UV-Absorption (260 nm, 1 mol/l, 1 cm, hydrochloric acid 1 mol/l): ≤ 0.10UV-Absorption (280 nm, 1 mol/l, 1 cm, hydrochloric acid 1 mol/l): ≤ 0.10Chloride (Cl): ≤ 0.02 %Sulfate (SO₄): ≤ 0.01 %Heavy metals (as Pb): ≤ 0.001 %As (Arsenic): ≤ 0.0005 %Ca (Calcium): ≤ 0.001 %Co (Cobalt): ≤ 0.0005 %Fe (Iron): ≤ 0.0005 %K (Potassium): ≤ 0.0005 %Mg (Magnesium): ≤ 0.0005 %Na (Sodium): ≤ 0.005 %NH₄ (Ammonium): ≤ 0.01 %Zn (Zinc): ≤ 0.0005 %Foreign amino acids: ≤ 0.5 %Other ninhydrine positive substances: ≤ 0.1 %Loss on drying (105 °C; 3 h): ≤ 0.3 %