Specification Test Results

• Appearance:
  Dark brown to dark red-purple Crystalline powder
• Infrared spectrum:
  Conforms
• Dye content:
  ≥85 %
• UV Lambda max:
  511 to 520 nm (in water + 1% Na2CO3)
• Absorption Ratio P-15/P+15:
  0.96 to 1.22
• BSC Certification:
  Passes