Appearance
White or off-white crystalline powder
Specific Rotation
(C=8£¬6N HCl)
-27.6 to -29.0°
Chloride (Cl)
not more than 0.02%
Loss on drying
≤0.2%
Residue on Ignition
not more than 0.1%
Heavy Metals(Pb)
not more than 10ppm
Assay
98.5 to 100.5%