CAS number：127-58-2
Molecular formula：C11H11N4NaO2S
molecular weight：286.29
Chemical structure：
| Product name: | Sulphamerazine sodium | |
| Expiry Date: | Three years | |
| Inspection Standard: | USP15 | |
| Analysis content | Specifications | Analysis Results |
| Identification | A: Precipitate of acidification, responds to Identification tests under Sulfamerazine. | Meets A、B examine |
| B: The tests of Sodium | ||
| Characteristics | White or faintly yellowish white crystalline powder or crystals. | Meets |
| Solubility | Clear, not more coloured than BY4 | Meets |
| Alkalinity | PH=10.0-11.0 | PH=10.3 |
| Heavy metals | ≤20ppm | ＜20ppm |
| Loss on drying | ≤2.5% | 1.9% |
| Assay(%) | 99.0%----101.0%（The dried substance) | 99.6%(The dried substance) |
| Conclusion : Meets USP15 specification | ||
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