Appearance：White crystalline powder

Assay: 99.0%min

Melting point：171℃-174℃

Identification：IR & UV

Positive reaction: Complies

Chloride reaction: Complies

Clarity of methanol solution: Complies

Related substances: Complies

Residual solvents: Complies

Loss on drying: 0.50%max

Residue on ignition: 0.10%max

Heavy metal: 10ppm max

Package: 25kg/fibre drum