Specification Test Results

• Assay (alkalimetric):
  99.0 - 102.0 %
• Identity:
  passes test
• Appearance of solution:
  passes test
• Sodium Dihydrogene phospate:
  ≤ 2.5 %
• pH-value (5 %; water):
  9.0 - 9.3
• Chloride (Cl):
  ≤ 0.0005 %
• Sulfate (SO₄):
  ≤ 0.005 %
• Total nitrogen (N):
  ≤ 0.001 %
• Heavy metals (as Pb):
  ≤ 0.0005 %
• As (Arsenic):
  ≤ 0.00005 %
• Cu (Copper):
  ≤ 0.0002 %
• Fe (Iron):
  ≤ 0.0005 %
• K (Potassium):
  ≤ 0.005 %
• Pb (Lead):
  ≤ 0.0005 %
• Reducing substances:
  passes test
• Loss on drying (130 °C):
  57.0 - 61.0 %
• Corresponds to ISO,Reag. Ph Eur:
  passes test
• Water (according to Karl Fischer):
  57.0 - 61.0 %