Items | Standard |
Characteristics | A white crystalline powder or colourless crystals or white pearls, freely soluble in water. Practically insoluble in alcohol and in ether. |
Identification | Positive |
Loss on drying | ≤ 1.0% |
Acidity/alkalinity | Conform |
Appearance of solution | Conform |
Barium | Conform |
Iron | ≤ 0.002% |
Magnesium and alkaline-earth metals | ≤ 0.02% |
Bromides | ≤ 0.1% |
Iodides | Conform |
Sulphate | ≤ 0.03% |
Heavy metals | ≤ 0.001% |
Aluminium | ≤ 0.0001% |
Sodium | ≤ 0.1% |
Arsenic | ≤ 0.0001% |
Bacterial endotoxins | ≤ 0.25EU/ml |
Microbial limit | ≤ 500cfu/g |
Assay | 99.0%~100.5% |