Specification Test Results

• Appearance:
  White Crystalline powder or crystals
• Infrared spectrum:
  Conforms
• Loss on drying:
  ≤0.2 % (105°C, 3 hrs)
• Sulfated ash:
  ≤0.4 %
• UV transmittance:
  ≥95 % (c=10, 2 N HCl, 430 nm) 1 cm cell
• pH:
  5.5 to 7.0 (1 % in water)
• Specific optical rotation:
  +14.5° to +17.3° (20°C, 589 nm) (c=4, 6 N HCl)
• Titration with HClO4:
  98.5 to 101.5 %
• Chloride (Cl):
  ≤500 ppm
• Sulfate (SO4):
  ≤300 ppm
• Iron (Fe):
  ≤30 ppm
• Heavy metals (as Pb):
  ≤20 ppm
• Other amino acids:
  ≤0.5 % (TLC)