Specification Test Results

• Assay (calculated to the dried substance):
  99.5 - 100.5 %
• Loss on drying (105°C):
  Max. 0.5 %
• Loss on drying (on silicagel, 4h):
  Max. 0.5 %
• Residue on ignition (SO₄):
  Max. 0.1 %
• pH (5 %, 25 °C):
  4.6 - 6.0
• Acidity or alkalinity:
  complying
• Arsenic (As):
  Max. 0.0003 %
• Calcium (Ca):
  Max. 100 ppm
• Copper (Cu):
  Max. 0.002 %
• Iron (Fe):
  Max. 20 ppm
• Magnesium (Mg):
  Max. 0.001 %
• Zinc (Zn):
  Max. 0.002 %
• Lead (Pb):
  Max. 0.0004 %
• Heavy metals (as Pb):
  Max. 10 ppm
• Iodide and bromide:
  complying
• Sulfate (SO₄):
  Max. 100 ppm
• Thiocyanate (SCN):
  complying
• Residual solvents:
  complying
• Appearance of the solution:
  complying