氧化锌 99.5+%

规格测试结果

• Appearance:
  White to faintly yellowish-white Powder
• Titration Complexometric:
  ≥99.50 %
• Additional info:
  Carbonates and substances insoluble in acids:
• Particle size:
  ≤0.01 % Sieve residue on 45 micron sieve
• Residue after ignition:
  ≤1 % (1 g, 500°C)
• Specific surface area:
  3.5 to 9 m²/g
• Alkalinity:
  ≤0.3 ml/g (ml 0.1 N HCl/g)
• Arsenic (As):
  ≤5 ppm
• Cadmium (Cd):
  ≤10 ppm
• Iron (Fe):
  ≤200 ppm
• Lead (Pb):
  ≤50 ppm