CAS number:144-83-2
Molecular formula:C11H11N3O2S
molecular weight:249.29
Chemical structure:
Product name: | Sulphapyridine |
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Expiry Date: | Three years |
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Inspection Standard: | USP25 |
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Items | Specifications | Results |
Description | off-white or yellowish-white crystalline powder | off-white crystalline powder |
Clarity and colour of solution | Clear not deeper than pale yellow | Clear not deeper than pale yellow |
Identification | Conform Withmonograph A.B.C | Pass |
Melting point | 190--193℃ | 190.4--191.2℃ |
Heavy metals | ≤0.002% | Pass |
Acidity | ≤0.2ml | 0.19ml |
Loss on drying | ≤0.5% | 0.24% |
Sulphated ash | ≤0.1% | 0.08% |
Assay | 99.0---101.0% | 99.52% |
Conclusion : PASS |