Specification Test Results

• Appearance:
  White to Orange to Green powder to crystal
• Absorbance:
  min. 0.350 (5mg/L, pH10.5, 592.0 to 596.0 nm)
• Solubility in EtOH (50vol%):
  transparency
• Drying loss:
  max. 1.0 %
• Transition interval (pH):
  (colorless)8.6 to 10.5 (blue)