Items | Standards | Results |
Appearance | Yellow or light yellow crystalline powder | Conforms |
Loss on drying | ≤0.5% | 0.15% |
Related substances | Individual impurity: NMT 0.2% | 0.06% |
Total impurities: NMT 0.5% | 0.07% | |
Sulphated ash | ≤0.1% | 0.08% |
Heavy metals | ≤20ppm | Conforms |
Particle size (optical microscopy | 90.0% particles not more than 15um | Conforms |
Assay | 98.5%~101.5% | 99.4% |
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