CAS No.: | 128-44-9 |
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Formula: | C7h4nnao3s |
EINECS: | 204-886-1 |
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Item | Standard |
Identification | Positive |
Melting point of °C | 226-230 |
Appearance | White crystal |
Content % | 99.0-101.0 |
Loss on drying % | ≤6.0 |
Ammonium Salts% ≤ | 0.0025 |
Arsenic % ≤ | 0.0003 |
Benzoate and salicylate | No precipitate or violet color appears |
Heavy metals ≤ | 0.001 |
Free acid or alkali | Complies with BP/USP/EP |
Readily carbonizable substances | Not more intensely colored than reference |
P-Toluene sulfonamide ≤ | 10ppm |
O-Toluene sulfonamide ≤ | 10ppm |
Selenium ≤ | 30 ppm |
Related substance | Complies with BP/USP/EP |
Clarity and color of solution. | Colorless, clear |
Organic volatiles | Complies with BP/USP/EP |
PH value | Complies with BP/USP/EP |
Benzoic acid- sulfonamide | ≤25ppm |