Appearance light yellow crystals flake
Purity% ≥ 99%
Cl ppm ≤ 30
Sulphur ppm ≤ 5
Fe ppm ≤ 3
Benzene insolubles% ≤0.02
Melting Point ≥107.3
Moisture ≤ 0.1%
Acidity ≤0.2mg KOH/g