Specification Test Results

• Appearance:
  White to light yellow Powder or crystals
• Infrared spectrum:
  Conforms
• Loss on drying:
  ≤0.2 % (105°C, 3 h)
• Sulfated ash:
  ≤0.1 %
• UV transmittance:
  ≥95 % (c=10, 2 N HCl, 430 nm) 1 cm cell
• Specific optical rotation:
  -0.3° to +0.3° (20°C, 589 nm) (c=10, 2 N HCl)
• Titration with NaOH:
  99.0 to 101.0 %
• Ammonium (NH4):
  ≤500 ppm
• Iron (Fe):
  ≤10 ppm
• Heavy metals (as Pb):
  ≤10 ppm