Specification Test Results

• Appearance (Colour):
  Faint Brown to Brown and Faint Brown-Yellow to Brown Yellow
• Appearance (Form):
  Powder
• Purity (HPLC):
  ≥85%
• Thin Layer Chromatography:
  Corresponds to Standard
• Solubility (Colour):
  Brown to Very Dark Brown and Red to Very Dark Red
• Water:
  3 - 11 %
• Sulphated Ash:
  ≤3%
• Infrared Spectrum:
  Conforms to Structure
• Wavelength (1) (UV):
  360 - 375 nm
• Extinction (1) (UV) (1%/1 cm):
  ≥300
• Solvent (UV):
  Methanol