Specification Test Results

• Identity (UV-VIS Spectroscopy):
  Passes Test
• Appearance of Solution:
  Passes Test
• pH Range (Colourless to Blue):
  8.8 - 10.5
• Absorption Maximum λ (pH 10,5):
  592 - 596
• Absorptivity (A1%/1 cm; λ max , 0.01 g/l, pH 10.5, on Dried Sample):
  800 - 900
• Loss on Drying (110 °C):
  ≤1.0