Items | Limits |
Appearance | White crystals or crystalline powder |
Identification(IR) | Conordant with the referennce spectrum |
Assay % | 98.5~101.5 |
Specific rotation [a]D20 | -33.2°~-35.2° |
Transmittance,% | ≥95 |
Loss on drying % | <0.30 |
pH | 5.4~6.0 |
Residue on ignition % | <0.1 |
Chloride (Cl) % | <0.03 |
Sulfate (SO4) % | <0.03 |
Iron (Fe) mg/kg | <30 |
Other Amino acide % | <0.5 |
Heavy metals mg/kg | <15 |
Arsenic(As) mg/kg | <1.5 |
Total plate count(cfu/g) | <3000 |
coliform (cfu/g) | <10 |
Pathogenic bacteria | Negative |