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Product Details
Product Description
Product name | Sulfamethoxazole |
Cas number | 723-46-6 |
Molecular formula | C10H11N3O3S |
Molecular weight | 253.28 |
Appearance | White or almost white crystalline powder |
Assay | 99.0%-101.0% |
IR | As per the spectrum of sulfamethoxazole CRS |
Melting point | 169.0-172.0℃ |
Appearance of solution | Clear and not more intensely than reference solutionY5, BY5 or GY5 |
Acidity | Not more than 0.3ml of 0.1M NaOH |
Related substances | Impurity A≤0.1% |
Impurity B ≤0.1% | |
Impurity C≤0.1% | |
Impurity D≤0.1% | |
Impurity E≤0.1% | |
Impurity F≤0.1% | |
Any other impurity≤0.1% | |
Total impurities≤0.3% | |
Heavy metals | ≤20ppm |
Loss on drying | ≤0.5% |
Sulphated ash | ≤0.1% |
Residual solvent | a)Pyridine≤200ppm |
b)Methylene chloride≤100ppm | |
c)Methanol≤1000ppm | |
d)Acetone≤1000ppm | |
e)Toluene≤890ppm | |
f)Benzene≤2ppm |
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