Analysis Note

Assay (acidimetric, calculated on dried substance): 99.0 - 101.0 %Identity (IR-spectrum): passes testAppearance: white to almost white, fine-crystalline powder or colorless crystalsAppearance of solution (50 g/l; water): clear and colorlessSpec. rotation (α 20/D, 110 g/l, hydrochloric acid 120 g/l, calc. on dried substance): +11.4 to +12.4Chloride (Cl): ≤ 200 ppmSulfate (SO₄): ≤ 200 ppmHeavy metals (as Pb): ≤ 10 ppmAs (Arsenic): ≤ 5 ppmCa (Calcium): ≤ 10 ppmCo (Cobalt): ≤ 5 ppmFe (Iron): ≤ 5 ppmK (Potassium): ≤ 5 ppmMg (Magnesium): ≤ 5 ppmNa (Sodium): ≤ 100 ppmZn (Zinc): ≤ 5 ppmNinhydrin-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; 3 h): ≤ 0.2 %

Biochem/physiol Actions

Precursor of histamine by action of histidine decarboxylase.

Packaging

25, 100 g in Glass bottle

1 kg in Glass bottle