Melting point: 136-141°C Assay: ≥99% HPLC Crystallographic form: type H Specific rotation: -18-22°C Heavy metals: ≤20PPM CP2005 Loss on drying: ≤0.5% CP2005 Residue on ignition: ≤0.2% Related matter: ≤1% HPLC Storage: stored in dry place, sealed and keep away from light Storage period: two years Packing: Cardboard drum lined with two-layer plastic bag, 10kg or 25kg/drum