Specification Test Results

• Meets ACS Reagent Chemical Requirements:
  99.0 - 101.0%
• For Laboratory,Research,or Manufacturing Use:
  ≤0.02%
• Assay (C₇H₆O₆S2H₂O):
  99.0 - 101.0 %
• Insoluble Matter:
  ≤ 0.02 %
• Residue after Ignition:
  ≤ 0.10 %
• Chloride (Cl):
  ≤ 0.001 %
• Salicylic Acid (HOC₆H₄COOH):
  ≤ 0.04 %
• Sulfate (SO₄):
  ≤ 0.02 %
• Heavy Metals (as Pb):
  ≤ 0.002 %
• Trace Impurities - Iron (Fe):
  ≤ 0.001 %