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Items | Requirements | Results |
Appearance | White crystalline powder | White crystalline powder |
Solubility | Very insoluble in water, freely soluble in ethanol(96%) and methanol chloride | Confirms |
Melting point | It is melting at about 222ºC,with decomposition | 222ºC |
Identification | It gives A,B,D positive reaction | A,B,D positive reaction |
PH | 4.0~5.0 | 4.4 |
Related substances | Confirms | Confirms |
Heavy metal | ≤10ppm | Confirms |
Loss on drying | ≤0.5% | 0.12% |
Sulphated ash | ≤0.1% | 0.05% |
Assay | 99.0%~101.0% | 99.6% |
Conclusion: This product conforms to the BP2010/USP35 detection. |