Decription: Light white or yellowish crystalline powder
Melting range: 267 -- 272 degree
Specific rotation: -72 -- -82 degree
Relating substance: Not more than 1. 5%
Loss on drying: Not more than 1. 0%
Residue on ignition: Not more than 0. 1%
Heavy metals: Not more than 10 ppm
Assay: Not less than 99. 0%