Résultats des tests de spécification

• Appearance (colour):
  Green to very dark green and brown to very dark brown and green-brown and brown-green
• Appearance (form):
  Powder
• Assay (gravimetr.):
  ≥80%
• Thin layer chromatography:
  Corresponds to standard
• Solubility (color):
  Red to very dark red
• Solubility (method):
  0.01 g in 10ml water
• Loss on drying:
  ≤7%
• Infrared spectrum:
  Conforms to structure
• Wavelength (1) (uv):
  509 - 524 nm
• Extinction (1%/1cm) (1) (uv):
  ≥ 600
• Solvent (uv):
  Water + 1 ml 1% sodium carbonate
• Lead (Pb) by Element analysis:
  Not detected
• Zinc (Zn) by Element analysis:
  Not detected
• Colour:
  Violet
• Extinction (1%/1 cm) (1) (uv):
  ≥ 1500