CAS number: 155-91-9
Molecular formula: C12H14N4O4S
molecular weight: 310.329
Chemical structure:
Product Name | SULPHADI METHOXI NE BASE | |
Shelf Life | 4 years | |
Item | Specification | Result |
Description | White or creamy- whi t e Crystalline powder | White or creamy- white Crystalline powder |
Solubility | Soluble in 2N sodium hydroxide; sparingly soluble in 2Nhydrochroric acid; slightly soluble in alcohol, in ether, in chloroform, and in hexane; practically insoluble in water | conforms |
Identification | Positive | Positive |
Acidity | 0.1M NaOH≤0.1ml/0.5g | Conforms |
Clarity and color of solution | Clear ≤BY5 | Conforms |
Melting point | 198-204℃ | 198.0-199.3℃ |
Heavy metals | ≤20ppm | <20ppm |
Related substances | Conforms to BP1988 | Conforms to BP1988 |
Loss on drying | ≤0.5% | 0.29% |
Sulfated ash | ≤0.1% | 0.07% |
Assay | 99.0%-101.0% | 99.41% |
Conclusion: The above product conforms to USP30. |