Specification Test Results

• Assay:
  Min. 99.0 %
• Assay (calculated to the dried substance):
  99 - 101.0 %
• Loss on ignition (800°C):
  Max. 0.5 %
• Loss on drying (130°C):
  Max. 0.5 %
• Water insoluble matter:
  Max. 0.01 %
• pH (5 %, 25 °C):
  5.2 - 8.0
• Free acid (as H₂SO₄):
  Max. 0.05 %
• Free alkali (as NaOH):
  Max. 0.03 %
• Arsenic (As):
  Max. 0.0001 %
• Calcium (Ca):
  Max. 20 ppm
• Iron (Fe):
  Max. 5 ppm
• Potassium (K):
  Max. 0.01 %
• Magnesium (Mg):
  Max. 25 ppm
• Zinc (Zn):
  Max. 0.02 %
• Heavy metals (as Pb):
  Max. 5 ppm
• Chloride (Cl):
  Max. 10 ppm
• Phosphate (PO₄):
  Max. 0.001 %
• Total N:
  Max. 5 ppm
• Appearance of the solution:
  complying