Specification Test Results

• Assay (calculated on the anhydrous basis):
  99.0 - 100.5 %
• Water (Karl Fischer):
  Max. 7.0 %
• Water insoluble matter:
  Max. 0.3 %
• pH (10 %, 20°C):
  7 - 9.0
• Arsenic (As):
  Max. 1 ppm
• Copper (Cu):
  Max. 0.001 %
• Iron (Fe):
  Max. 0.002 %
• Mercury (Hg):
  Max. 1 ppm
• Lead (Pb):
  Max. 2 ppm
• Zinc (Zn):
  Max. 0.001 %
• Heavy metals (as Pb):
  Max. 0.001 %
• Chloride (Cl):
  Max. 0.03 %
• Fluoride (F):
  Max. 0.005 %
• Sulfate (SO₄):
  Max. 0.05 %
• Formic acid, formiates other impurities (HCOOH):
  Max. 1000 ppm