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 |