Appearance:	White to slightly yellow crystalline powder
Identification:	Positive reaction
Specific rotation:	+103º- +108º
PH:	7.0-8.0
Loss on drying:	≤0.25%
Heavy metal:	≤10ppm
Lead:	≤2ppm
Assay:	99.0-101.0%
Organic volatile impurities:	Meets requirement