Item | Specification |
Appearance | White or almost white crystalline powder, very hygroscopic. |
Identification | Take the product is about 5mg, dissolved in water for 5ml,and tested with potassium bismuth iodide for several drops,which results in orange precipitation. |
The infrared absorption spectrum of the sample shall be consistent with that of the reference substance. | |
Chloride identification | |
pH | 3.5-4.5 |
Clarity and Color of Solution | Clear and colorless,if there is the turbidity and color,less than turbidity-1 and yellow-1 |
Related substances | Max single impurity ≤0.1% |
Total impurities ≤1.0% | |
Loss on drying | ≤1.0% |
Residue on ignition | ≤0.1% |
Heavy metals | ≤10ppm |
Residual solvent | Methanol≤0.3% |
Acetone≤0.5% | |
Dichloromethane≤0.06% | |
Assay (on dried basis) | ≥99.0% |