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)