Items | Standard |
Appearance | White crystalline powder |
Identification | Positive |
Assay (C6H7O6Na·H2O) | 98.0%~100.5% |
Specific rotation[α]D25° | +95.5°~+98.0° |
Oxalate | passes test |
pH(1:20) | 5.5~8.0 |
Lead | 2PPM Max |
Heavy metals(as Pb) | 10PPM Max |
Arsenic | 3PPM Max |
Loss on drying | 0.25% Max |