Specification Test Results

• Appearance:
  White Crystals
• Solubility:
  Clear colorless
• UV:
  at 260 nm A: ≤0.01
• pH:
  9.0 to 9.4 (0.1 M in water)
• Titration with HClO4:
  ≥98.5 %
• Chloride (Cl):
  ≤5 ppm
• Sulfate (SO4):
  ≤50 ppm
• Arsenic (As):
  ≤0.5 ppm
• Copper (Cu):
  ≤2 ppm
• Iron (Fe):
  ≤5 ppm
• Potassium (K):
  ≤50 ppm
• Heavy metals (as Pb):
  ≤5 ppm