Appearance: White crystalline powder
Identification: Complies
Assay: 99.0%~101.0%  
Melting point: 288.0℃~294.0℃
Chloride: 200ppm max  
Heavy metals: 10ppm max   
Loss on drying: 3.0% max
Residue on ignition: 0.1% max
Residual solvent: 500ppm max

Related impurities:

    Single impurity: 0.10% max   
    Total impurities: 0.20% max

Package: 25kg/fibre drum