Appearance:white crystal or white crystalline powder.
Content:≥99.50 %
Melting point:184.0-187.0°C
Sulphate(SO42-):0.02 %
Heavy metal(as Pb2+):0.001 %
Reductant of potassium permanganate(ml):≤2.0%
Substance insoluble in water:≤0.02%
