Specification Test Results

• Appearance:
  Colorless to white to almost white Crystalline powder or crystals
• Infrared spectrum:
  Conforms
• Loss on drying:
  10.5 % to 12.5 % (1 g, 130°C, 3 h)
• Sulfated ash:
  ≤0.1 % (1 g)
• Appearance of solution:
  Clear colorless
• Related substances:
  ≤0.5 % (impurity A)
• pH:
  4.0 to 6.0
• Specific optical rotation:
  +33.7° to +36.0° (20°C, 589 nm) (on dried substance)
• Titration with HClO4:
  99.0 to 101.0 % (on dried substance)
• Sulfates:
  ≤200 ppm
• Chlorides:
  ≤200 ppm
• Ammonium (NH4):
  ≤0.1 %
• Iron (Fe):
  ≤10 ppm