Specification Test Results

• Appearance:
  White to off-white Crystalline powder or crystals
• Infrared spectrum:
  Conforms
• Melting point:
  175 to 180 °C
• Loss on drying:
  ≤0.25 % (60 °C, 2 h, 1 mmHg)
• Titration with NaOH:
  ≥96.0 %
• Sulfate (SO4):
  ≤0.02 %
• AsO4, PO4, SiO4 (as SiO2):
  ≤0.001 %
• Magnesium (Mg):
  ≤0.005 %
• Potassium (K):
  ≤0.01 %
• Sodium (Na):
  ≤0.01 %
• Heavy metals (ICP-OES):
  ≤0.001 %
• Insoluble matter:
  ≤0.005 %