Specification Test Results

• Assay (calculated to the dried substance):
  99.0 - 101.0 %
• Loss on drying (150°C, 2h):
  Max. 1 %
• Loss on drying (105°C):
  Max. 3.0 %
• Water (Karl Fischer):
  Max. 2 %
• pH (5 %, 20°C):
  7.5 - 9.0
• Aluminium (Al):
  Max. 1 ppm
• Arsenic (As):
  Max. 2 ppm
• Calcium (Ca):
  Max. 0.005 %
• Copper (Cu):
  Max. 0.0004 %
• Iron (Fe):
  Max. 10 ppm
• Mercury (Hg):
  Max. 1 ppm
• Sodium (Na):
  Max. 0.5 %
• Magnesium (Mg):
  Max. 0.003 %
• Lead (Pb):
  Max. 2 ppm
• Zinc (Zn):
  Max. 0.001 %
• Heavy metals (as Pb):
  Max. 4 ppm
• Chloride (Cl):
  Max. 50 ppm
• Sulfate (SO₄):
  Max. 100 ppm
• Reducing impurities:
  complying
• Formic acid, formiates other impurities (HCOOH):
  Max. 1000 ppm
• Residual solvents:
  complying
• Appearance of the solution:
  complying