Appearance White crystal or crystalline powder, odorless
Assay 99%min
Transmittance(10% water solution) 98%min
Water 0.3% max
Residue on ignition 0.05% max
Specific rotation +18.5°～+19.5°
PH 5.0-7.0
Chloride 0.005% max
Sulphate 0.005% max
Total bacterial ≤3000cfu/g
Coli. ≤3MPN/g
Molds and yeasts ≤25cfu/g
