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4-(4-Nitrophenylazo)resorcinol 90%, Sigma-Aldrich®
4-(4-Nitrophenylazo)resorcinol 90%, Sigma-Aldrich®
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4-(4-Nitrophenylazo)resorcinol 90%, Sigma-Aldrich®

Specification Test Results

  • Appearance (colour):
    Orange to very dark orange and red to very dark red and dark red-orange and very dark red-brown
  • Appearance (form):
    Powder
  • Infrared spectrum:
    Conforms to structure
  • Wavelength:
    439 - 445 nm
  • Extinction coefficient, c = 0.005 g/L in methanol + 1 ml 0.1 N NaOH:
    ≥37000
  • Carbon:
    49.5 - 61.7%
  • Nitrogen:
    14.4 - 18.0%

Specification Test Results