Specification Test Results

• Appearance:
  Clear colorless to amber Viscous liquid
• Infrared spectrum:
  Conforms
• Refractive index:
  1.4990 to 1.5070 (20°C, 589 nm)
• pH:
  ≥10 (25 % solution)
• Titration with HClO4:
  ≥98.5 %
• Arsenic (As):
  ≤2 ppm
• Copper (Cu):
  ≤20 ppm
• Iron (Fe):
  ≤400 ppm
• Lead (Pb):
  ≤5 ppm
• Mercury (Hg):
  ≤1 ppm
• Zinc (Zn):
  ≤20 ppm
• Heavy metals (as Pb):
  ≤10 ppm
• Insoluble matter:
  ≤0.2 % (in HCl)
• Loss on ignition:
  ≤8 % (800°C)