Items | Specifications |
Appearance | Off-white or white powder |
HPLC Identification | Consistent with the reference substance main peak retention time |
Specific rotation | +20.0°~+22.0° |
Heavy metals | ≤10ppm |
pH | 7.5~8.5 |
Loss on dry | ≤1.0% |
Lead | ≤3ppm |
Arsenic | ≤1ppm |
Cadmium | ≤1ppm |
Mercury | ≤0.1ppm |
Melting point | 250.0℃~265.0℃ |
Residue On ignition | ≤0.1% |
Hydrazine | ≤2ppm |
Bulk density | - |
Tapped density | - |
L-Histidine | ≤0.3% |
Assay | 99.0%~101.0% |
Total aerobic counts | ≤1000CFU/g |
Mold &Yeast | ≤1000CFU/g |
E.Coli | Negative |
Sa1monella | Negative |