Customization: | Available |
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CAS No.: | 55589-62-3 |
Formula: | C4h4kno4s |
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Item | Standard | |
Solubility in water | Freely soluble | |
Solubility in ethanol | Slightly soluble | |
Ultraviolet absorption | 227+2nm | |
Test for potassium | Positive | |
Precipitation test | Yellow precipitate | |
Assay (Titration method) | 99.0-101.0% | |
PH (1% solution) | 6.5-7.5 | |
Loss on drying (105 °C,2h) | ≤1.0% (105 °C,2hours) | |
Organic impurities (HPLC) | ≤20 mg/kg | |
Impurity A** | ≤0.125% | |
Impurity B** | ≤20 mg/kg | |
Fluoride | ≤3 mg/kg | |
Heavy Metals | ≤5 mg/kg | |
Lead | ≤1 mg/kg | |
Arsenic | ≤3 mg/kg | |
Selenium | ≤30 mg/kg | |
Hg | ≤0.03 mg/kg | |
Sulfate | ≤0.1% | |
Cadmium | Not found | |
Chrome | Not found | |
Nickel | Not found |