Résultats des tests de spécification

• Assay:
  99.5 - 100.5 %
• Loss on drying (over silicagel, 5h):
  Max. 0.5 %
• pH (3,3 %, 20 °C):
  3.8 - 4.8
• Arsenic (As):
  Max. 0.0005 %
• Iron (Fe):
  Max. 0.0005 %
• Heavy metals (as Pb):
  Max. 0.001 %
• Sulfate (SO₄):
  Max. 0.04 %
• Organic matter:
  complying
• Residual solvents:
  complying
• Solubility in C₂H₅OH:
  complying
• Appearance of the solution:
  complying
• Completeness of the solution:
  complying