Specification Test Results

• Appearance (Colour):
  Green to very dark green
• Appearance (Form):
  Powder or crystals
• Thin layer chromatography:
  Corresponds to standard
• Solubility (Colour):
  Red to very dark red
• Solubility (turbidity):
  Clear to turbid
• Solubility (method):
  0.01 g in 10 ml methanol
• pH-transition:
  0.3
• Colour:
  Violet
• Wavelength (1) (UV):
  525.0 - 535.0 nm
• Extinction (1%/1 cm) (1) (uv):
  ≥ 1000
• Solvent (UV):
  ETOH 50 %