Melting point | 268-270°C decomposes | |
Boiling point | 432.52°C (rough estimate) | |
density | 1.0962 (rough estimate) | |
refractive index | 1.6000 (estimate) | |
storage temp. | Store at +15°C to +30°C. | |
Colour Index | 42510 | |
pka | 6.81±0.20(Predicted) | |
PH | 5-6 (1g/l, H2O, 25°C) | |
Item | Standard | Test Results |
A.H-NMR:Comply with the structure | Complies | |
B.LC-MS:Comply with the structure | Complies | |
C.The IR spectrum of sample should be identical with that of reference standard; | Complies | |
D.HPLC-ESI-MS The retention time of the major peak in the chromatogram of the Assay preparation corresponds to that in the chromatogram of the Standard preparation, as obtained in the Assay. | Complies | |
Crystallinity | meets the requirements. | Complies |
Loss on drying | ≤2.0% | 0.19% |
Heavy metals | ≤10 ppm | <10ppm |
Water | ≤1.0% | 0.1% |
Sulphated ash | ≤0.5%, determined on 1.0 g. | 0.009% |
Unspecified impurities: for each impurity ≤0.10% | <0.10% | |
Total Impurity ≤0.5% | 0.18% | |
Purity | ≥99.0% | 99.7% |
Assay | 99.0%~101.0% (anhydrous substance). | 99.8% |
Storage | Preserve in well-closed, light-resistant and airtight containers. | Complies |