Specification Test Results

• Assay (calculated to the dried substance):
  99.0 - 100.5 %
• Loss on drying (105°C, 2 h):
  Max. 0.5 %
• Acidity or alkalinity:
  complying
• Aluminium (Al):
  Max. 0.2 ppm
• Arsenic (As):
  Max. 1 ppm
• Barium (Ba):
  complying
• Iron (Fe):
  Max. 2 ppm
• Potassium (K):
  Max. 500 ppm
• Heavy metals (as Pb):
  Max. 5 ppm
• Bromide (Br):
  Max. 0.005 %
• Iodide (I) test:
  complying
• Ferrocyanides:
  complying
• Nitrite (NO₂):
  complying
• Phosphate (PO₄):
  Max. 25 ppm
• Sulfate (SO₄):
  Max. 200 ppm
• Appearance of the solution:
  complying
• Mg, earth alkali metals (as Ca):
  Max. 100 ppm
• Identity:
  complying
• Residual solvents:
  complying