CAS number： 547-32-0
Molecular formula： C10H10N4NaO2S
molecular weight： 273.2662
Chemical structure：
| Product Name | Sulfadiazine Sodium/Sulphadiazine Sodium | |
| Shelf Life | 3 years | |
| Item | Specification | Result |
| Description | White or almost white crystalline powder | Conforms |
| Identification | A: Chemical Method | Conforms |
| B: Test for Sodium | Conforms | |
| Heavy Metals | ≤20ppm | ＜20ppm |
| Melting Point | 250-254℃ | 251-252℃ |
| Acidity | PH=9.6 - 10.5 | 10.25 |
| Clarity of Solution | Clarity | Clarity |
| Loss on Drying | ≤0.5% | 0.08% |
| Selenium | ≤30ppm | ＜30ppm |
| Assay (Dried Basis) | 99.0%-100.5% | 99.4% |
| Conclusion | Conforms to USP34 | |
