Specification Test Results

• pH Range (Yellow to Purple-Red):
  3.7 - 5.2
• Identity (IR-Spectrum):
  Passes Test
• Insoluble in Water:
  Passes Test
• Absorption Maximum λ1 (NaOH 0.1 M):
  592 - 596
• Absorption Maximum λ2 (NaOH 0.1 M):
  553 - 558
• Absorptivity (A1%/1 cm; λ max. 1, NaOH 0.1 M):
  305 - 480
• Absorptivity (A1%/1 cm; λ max. 2, NaOH 0.1 M):
  330 - 520
• Related Substances (TLC):
  Passes Test
• Loss on Drying (135 °C):
  ≤5.0
• Suitability for Microscopy:
  Passes Test
• Sensitivity to Aluminium:
  Passes Test