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Ninhydrin, Spectrophotometric Grade
Ninhydrin, Spectrophotometric Grade
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Ninhydrin, Spectrophotometric Grade

Specification Test Results

  • Appearance:
    White to light yellow Crystalline powder or crystals
  • Infrared spectrum:
    Conforms
  • Sulfated ash:
    ≤0.1 %
  • pH:
    4.0 to 5.6 (1 % in water)
  • Suitability:
    (for amino acid analysis) Passes test
  • Specific optical rotation:
    +13.5° to +15.5° (20°C, 589 nm) (c=10, 6 N HCl) (dried substance)
  • Titration with HClO4:
    98.5 to 101.0 % (dried substance)
  • Sulfates:
    ≤300 ppm
  • Chlorides:
    ≤200 ppm
  • Ammonium (NH4):
    ≤200 ppm
  • Iron (Fe):
    ≤10 ppm
  • Ninhydrin-positive substances:
    ≤0.10 % (Any ninhydrin-positive substance)

Specification Test Results

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