Specification Test Results

• Synonyms:
  Sulphuric Acid Dipotassium Salt; Sal polychrestum; Arcanum duplicatum; Tartarus vitriolatus
• Form:
  Powder
• Storage:
  Store at Room Temperature (15 to 30 °C)
• Assay:
  ≥99,0% K₂SO₄
• Heavy Metals:
  Lead (as Pb): ≤5 ppm; Iron (Fe): ≤5 ppm
• Insoluble Matter:
  ≤0,01%
• pH:
  5,5 - 8,5 (5% soln, 25 °C)
• Chloride (Cl):
  ≤0,001%
• Nitrogen Compounds (as N):
  ≤5 ppm
• Calcium (Ca):
  ≤0,01%
• Magnesium (Mg):
  ≤0,005%
• Sodium (Na):
  ≤0,02%