Specification Test Results

• Appearance:
  White Powder or crystals or flakes
• Infrared spectrum:
  Conforms
• Loss on drying:
  ≤0.2 %
• TLC:
  ≤0.5 % L-enantiomer
• Appearance of solution:
  (5% soln. in 3 N HCl) clear, colorless
• Residue after ignition:
  ≤0.1 %
• Specific optical rotation:
  -14.9° to -16° (20°C, 589 nm) (c=4, 6 N HCl)
• Titration with HClO4:
  ≥98.5 %
• Arsenic (As):
  ≤2 ppm
• Iron (Fe):
  ≤10 ppm
• Heavy metals (as Pb):
  ≤10 ppm