ITEM | STANDARD |
Appearance | White crystalline powder |
Assay | 99.0-101.0% |
Odor | Absent |
Water solubililty | Freely soluble |
Ultraviolet absorption | 227±2NM |
Solubility in ethanol | Slightly soluble |
Loss on drying | 1.0 % max |
Sul fate | 0.1% max |
Potassium | 17.0-21 % |
Impurity | 20ppm max |
Heavy metal (pb) | 1.0ppm max |
Fluorid | 3.0ppm max |
Selenium | 10.0ppm max |
Lead | 1.0ppm max |
PH Value | 6.5-7.5 |