Specification Test Results

• Identity (IR):
  complying
• Assay (calculated on the anhydrous basis):
  99.5 - 100.5 %
• Appearance of the solution:
  complying
• Sulfated ash:
  Max. 0.1 %
• Water (Karl Fischer):
  7.5 - 9.0 %
• Heavy metals (as Pb):
  Max. 10 ppm
• Sulfate (SO₄):
  Max. 150 ppm
• Reaction against H₂SO₄:
  complying
• Readily carbonisable substances:
  complying
• Oxalate (as Oxalic acid):
  Max. 360 ppm
• Residual solvents:
  complying