Specification Test Results

• Assay (calculated to the dried substance):
  99.5 - 100.5 %
• Loss on drying (300°C):
  Max. 0.5 %
• Loss on drying (105°C, 4 h):
  Max. 0.5 %
• Arsenic (As):
  Max. 2 ppm
• Copper (Cu):
  Max. 0.002 %
• Iron (Fe):
  Max. 10 ppm
• Mercury (Hg):
  Max. 1 ppm
• Lead (Pb):
  Max. 2 ppm
• Zinc (Zn):
  Max. 0.002 %
• Heavy metals (as Pb):
  Max. 5 ppm
• Chloride (Cl):
  Max. 100 ppm
• Sulfate (SO₄):
  Max. 50 ppm
• Alkali hydroxide, -bicarbonates:
  complying
• Appearance of the solution:
  complying
• Residual solvents:
  complying