Specification Test Results

• Assay (calculated to the dried substance):
  98.0 - 100.5 %
• Loss on drying (130°C):
  Max. 1.0 %
• Loss on drying (105°C, 4 h):
  Max. 1.0 %
• Water insoluble matter:
  Max. 0.2 %
• pH (5 %, 20°C):
  4.2 - 4.5
• Arsenic (As):
  Max. 1 ppm
• Cadmium (Cd):
  Max. 1 ppm
• Copper (Cu):
  Max. 0.002 %
• Iron (Fe):
  Max. 10 ppm
• Mercury (Hg):
  Max. 1 ppm
• Sodium (Na):
  Max. 0.1 %
• Lead (Pb):
  Max. 1 ppm
• Zinc (Zn):
  Max. 0.002 %
• Heavy metals (as Pb):
  Max. 10 ppm
• Chloride (Cl):
  Max. 10 ppm
• Fluoride (F):
  Max. 10 ppm
• Sulfate (SO₄):
  Max. 200 ppm
• KMnO₄ reducing matter (as O):
  Max. 0.04 %
• Appearance of the solution:
  complying
• Residual solvents:
  complying