Test Items Specifications Test Result Items Conclusion Description White or almost white Crystal powder;Have no smelly and tasteless White or almost white Crystal powder;Have no smelly and tasteless Complies Identification Positive reaction Positive reaction Complies IR spectrum: IR spectrum of the sample corresponds to that of the reference standard. IR spectrum: IR spectrum of the sample corresponds to that of the reference standard. Complies Loss on drying ≤5.0% 3.86% Complies Melting temperature 141~144℃ 142.7~143.4℃ Complies Residue on ignition ≤0.1% 0.03% Complies Specific rotation -290~-300° -296.31° Complies Absorbance in