Specification Test Results

• Appearance (colour):
  Orange to very dark orange and red to very dark red and dark red-orange and very dark red-brown
• Appearance (form):
  Powder
• Infrared spectrum:
  Conforms to structure
• Wavelength:
  439 - 445 nm
• Extinction coefficient, c = 0.005 g/L in methanol + 1 ml 0.1 N NaOH:
  ≥37000
• Carbon:
  49.5 - 61.7%
• Nitrogen:
  14.4 - 18.0%