Specification Test Results

• For Microelectronic Use:
  = 98.0 %
• Assay (NaOH) (by acidimetry):
  ≥98.0 %
• Sodium Carbonate (Na₂CO₃):
  ≤0.4 %
• Insoluble Matter:
  ≤30 ppm
• Ammonium Hydroxide Precipitate:
  ≤0.01 %
• Potassium (K)(by FES):
  ≤0.02 %
• Nitrogen Compounds (as N):
  ≤3 ppm
• Chloride (Cl):
  ≤0.005 %
• Phosphate (PO₄):
  ≤2 ppm
• Sulfate (SO₄):
  ≤30 ppm
• Trace Impurities - Copper (Cu):
  ≤10 ppm
• Heavy Metals (as Ag):
  ≤10 ppm
• Trace Impurities - Iron (Fe):
  ≤3.000 ppm
• Trace Impurities - Mercury (Hg)(by AAS):
  ≤0.100 ppm
• Trace Impurities - Nickel (Ni):
  ≤5.000 ppm