Specification Test Results

• Red to Very Dark Red and Red-Brown and Brown-Red:
  Appearance (Colour)
• Appearance (Form):
  Powder
• Solubility (Colour):
  Faint Orange to Red-Brown
• Solubility (Turbidity), 10 mg/mL, 1M NH4OH:
  Clear
• Infrared spectrum:
  Conforms to Structure
• Loss on Drying:
  ≤5 %
• Purity (Titration by NaOH):
  ≥85 %
• Recommended Retest Period:
  6 Years