Customization: | Available |
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CAS No.: | 62-54-4 |
Formula: | C4h6cao4 |
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Item | Limit |
Characters | This product is white powder or white crystalline powder; Odorless, slightly sour taste, astringent, wet. This product is soluble in water, slightly soluble in methanol, almost insoluble in absolute ethanol, trichloromethane and acetone. |
Identification | Meets the requirements. |
Arsenic | Not more than 3ppm. |
Chloride | Not more than 0.05%. |
Sulfate | Not more than 0.06%. |
Lead | Not more than 10ppm. |
Aluminum | 2ppm , the fluorescence of the Sample solution is NMT that of the Standard solution. |
Barium | The Sample solutions containing 1.0 and 1.5mL of Barium chloride solution remain clear or are only faintly turbid. The Sample solution containing 2.0mL of Barium chloride solution is not more turbid than the Sample solution. |
Fluoride | Not more than 50ppm. |
Magnesium | Not more than 0.05%. |
Nitrate | The blue color persists for NLT 10 min. |
Potassium | Not more than 0.05%. |
Sodium | Not more than 0.5%. |
Strontium | Not more than 0.05%. |
Readily oxidizable substances | The pink color in the supernatant is not completely discharged. |
PH | 6.3-9.6. |
Water determination | Not more than 7.0% |
Assay | 99.0%-100.5% on the anhydrous basis . |