Specification Test Results

• Purity (DSC (differential scanning calorimetry)):
  ≥ 99.5 mol%
• Identity (IR-spectrum):
  passes test
• Appearance:
  Colorless crystals or white crystalline powder.
• Appearance of solution (100 g/l, water):
  Clear and colorless.
• APHA (5M, water):
  ≤ 10 APHA
• Turbidity (5M, water):
  ≤ 2.0 NTU
• Insoluble matter:
  ≤ 0.0005 %
• Conductivity (5M, water, 25 °C):
  ≤ 15 µS/cm
• Melting point (DSC (differential scanning calorimetry)):
  132 - 135 °C
• UV-Absorption (260 nm; 8 mol/l; 1 cm; water):
  ≤ 0.1
• UV-Absorption (280 nm; 8 mol/l; 1 cm; water):
  ≤ 0.1
• Cyanide (CN):
  ≤ 0.000001 %
• Chloride (Cl):
  ≤ 0.0005 %
• Sulfate (SO₄):
  ≤ 0.001 %
• Heavy metals (as Pb):
  ≤ 0.0004 %
• Fe (Iron):
  ≤ 0.00002 %
• NH₄ (Ammonium):
  ≤ 0.00001 %
• Biuret:
  ≤ 0.05 %
• Sulfated ash (800 °C):
  ≤ 0.01 %
• DNases (Exo- and endonucleases):
  not detectable
• RNases:
  not detectable