| CAS No.: | 33665-90-6 |
|---|---|
| Formula: | C4h5no4s |
| EINECS: | 251-622-6 |
|
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| Testing Item | Standard | Result |
| Solubility in Water | Freely Soluble | Freely Soluble |
| Solubility in Ethanol | Slightly Soluble | Slightly Soluble |
| Ultraviolet Absorption | 227±2nm | 227±2nm |
| Test for Potassium | Positive | Positive |
| Precipitation test | Yellow Precipitate | Yellow Precipitate |
| Assay Content | 99.0~101.0% | 99.51% |
| Loss on Drying(105ºC,2h) | ≤1% | 0.05% |
| Organic Impurities | ≤20μg/g | <20μg/g |
| Impurity A | ≤0.125% | <0.125% |
| Impurity B | ≤20 mg/kg | <20 mg/kg |
| Fluoride | ≤3% | <0.5% |
| Potassium | 17.0-21 mg/kg | 19.04 mg/kg |
| Heavy Metals | ≤5 mg/kg | <5 mg/kg |
| Arsenic | ≤3 mg/kg | ≤3 mg/kg |
| Lead | ≤1 mg/kg | Not detected |
| Selenium | ≤10 mg/kg | Not detected |
| Sulfate | ≤0.1% | ≤0.1% |
| PH (1 in 100 solution) | 5.5-7.5 | 6.66 |
| Total Plate Count | ≤10 cfu/g | ≤10 cfu/g |
| Coliforms-MPN | ≤1 MPN/g | None |
| Yeast and Moulds | ≤10 cfu/g | ≤10 cfu/g |
| E.Coli | Negative | None |
Polifar group is established in beautiful and economically developed city Nanjing in 2013.
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