Specification Test Results

• Appearance:
  White to almost white Powder
• Infrared spectrum:
  Conforms
• Assay:
  97.0 to 102.0 % (USP)
• Loss on drying:
  ≤0.5 % (60°C, 3 h) (vacuum)
• UV:
  at 268 nm A: ≤0.07 (0.1 g in 50 ml water)
• Appearance of solution:
  Passes test
• Identification A:
  Passes test
• Identification B:
  Passes test
• Identification C:
  Passes test
• Identification D:
  Passes test
• Residue after ignition:
  ≤0.1 %
• pH:
  4.5 to 5.5 (1 g in 100 ml water)
• Specific optical rotation:
  -60.5° to -65.0° (20°C, 589 nm) (0.5g in 10 ml 1N NaOH)
• Titration with HClO4:
  98.0 to 101.0 % (EP)
• Mercury (Hg):
  ≤0.001 %
• Impurity:
  ≤1 % (Penicillamine disulfide)