Item | Standard |
Appearance | White or similar sheet crystal or powder |
Solubility in alcohol | clear and no depoist |
Identification | A:the chloroform acquires a blood-red color and sulfuric aicd shows a green fluorescence. |
B:a pink color is produced,and it rapidly changes to red,then to blue, and finally to a brilliant green. | |
Melting range | 147°C-150°C |
Specific rotation | -34°~-38° |
Acidity | ≤0.3ml |
Loss on drying | ≤0.3% |
Residue on ignition | ≤0.1% |
Purity | ≥95.0% |