Specification Test Results

• Appearance:
  Colorless to white Crystalline powder
• Infrared spectrum:
  Conforms
• Loss on drying:
  ≤6 % (105°C, 5 hrs)
• HPLC:
  ≥98.5 %
• UV spectrophotometry:
  ≥98.0 % (lambda max. 260 nm, pH 7)
• UV transmittance:
  ≥95.0 % (c=1, 0.2 N NaOH, 430 nm) 1 cm cell
• Ratio of Absorbances:
  0.76 to 0.80 (A250/A260)
• Heavy metals (as Pb):
  ≤10 ppm