Specification Test Results

• Meets ACS Reagent Chemical Requirements:
  ≥98.0%
• For Laboratory,Research,or Manufacturing Use:
  ≤0.01%
• Assay (K₂HPO₄) (by acidimetry):
  ≥ 98.0 %
• Insoluble Matter:
  ≤ 0.01 %
• Loss on Drying at 105°C:
  ≤ 1.0 %
• pH of 5% Solution at 25°C:
  8.5 - 9.6
• Chloride (Cl):
  ≤ 0.003 %
• Fluoride (F):
  ≤ 0.001 %
• Nitrogen Compounds (as N):
  ≤ 0.001 %
• Sulfate (SO₄):
  ≤ 0.005 %
• Trace Impurities - Iron (Fe):
  ≤ 0.001 %
• Sodium (Na):
  ≤ 0.05 %
• Trace Impurities - Arsenic (As):
  ≤ 1 ppm
• Trace Impurities - ACS - Heavy Metals (as Pb):
  ≤ 5 ppm
• Trace Impurities - Lead (Pb):
  ≤ 5 ppm