Specification Test Results

• Assay (Acidimetry):
  98.0-100.5%
• pH (5% Solution):
  4.2-4.5
• Loss on drying (130 °C):
  1.0%
• Insoluble matter in H₂O:
  0.2%
• Reducing substances:
  Passes test
• Chloride (Cl):
  0.02%
• Sulphate (SO₄):
  0.03%
• Residual solvents (Ph. Eur./USP):
  Passes test
• Fluoride (F):
  0.001%
• Heavy metals (as Pb):
  0.001%
• As:
  0.0001%
• Fe:
  0.001%
• PB:
  0.00005%