Specification Test Results

• Assay:
  99.7 - 100.5 %
• Identification (IR):
  Passes test
• Readily carbonisable substances:
  Passes test
• Heavy metals (as Pb):
  Max. 10 ppm
• Ignition residue (SO₄):
  Max. 0.02 %
• Insolubility in water:
  Max. 50 ppm
• Oxalic acid (calculated on anhydrous):
  Max. 360 ppm
• Tartaric acid:
  Max. 0.2 %
• Water:
  7.5 - 9.0 %
• C₂O₄ (as C₂H₂O₄):
  Max. 0.04 %
• Cl (Chloride):
  Max. 5 ppm
• PO₄ (Phosphate):
  Max. 10 ppm
• SO₄ (Sulphate):
  Max. 20 ppm
• As (Arsenic):
  Max. 0.1 ppm
• Ca (Calcium):
  Max. 20 ppm
• Cu (Copper):
  Max. 5 ppm
• Fe (Iron):
  Max. 3 ppm
• Mg (Magnesium):
  Max. 5 ppm
• Ni (Nickel):
  Max. 1 ppm
• Pb (Lead):
  Max. 2 ppm
• Conforms to ACS:
  Passes test
• Conforms to Reag. Ph.Eur.:
  Passes test
• Conforms to Reag. USP:
  Passes test