Specification Test Results

• Assay (calculated to the dried substance):
  98.0 - 100.5 %
• Assay (calculated on the anhydrous basis):
  98.0 - 103.0 %
• Loss on drying (130°C):
  21.5 - 24.0 %
• Water (Karl Fischer):
  18.0 - 26.5 %
• Water insoluble matter:
  Max. 0.2 %
• pH (5 %, 25 °C):
  4.2 - 4.5
• pH (1 %,20°C):
  4.1 - 5.0
• Arsenic (As):
  Max. 1 ppm
• Calcium (Ca):
  Max. 0.002 %
• Cadmium (Cd):
  Max. 1 ppm
• Copper (Cu):
  Max. 0.001 %
• Iron (Fe):
  Max. 5 ppm
• Mercury (Hg):
  Max. 1 ppm
• Magnesium (Mg):
  Max. 0.002 %
• Lead (Pb):
  Max. 1 ppm
• Zinc (Zn):
  Max. 0.001 %
• Heavy metals (as Pb):
  Max. 10 ppm
• Al, Ca and Related Substances:
  complying
• Chloride (Cl):
  Max. 50 ppm
• Fluoride (F):
  Max. 10 ppm
• Sulfate (SO₄):
  Max. 200 ppm
• Reducing impurities:
  complying
• Appearance of the solution:
  complying
• Residual solvents:
  complying
• Appearance:
  complying