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Items | Standard (USP) | Test Results | |
Appearance | White crystals or crystalline powder | Conforms | |
Assay | 98.5%-101.5% | 99.2% | |
PH | 5.5-7.0 | 6.1% | |
Specific rotation | +26.6°~+28.8° | +27.8° | |
Loss on drying | ≤0.30% | 0.28% | |
Residue on ignition | ≤0.10% | 0.075% | |
Chloride (Cl) | ≤500ppm | <500 ppm | |
Sulfate (SO4) | ≤300ppm | <300 ppm | |
Iron (Fe) | ≤30ppm | <30ppm | |
Arsenic (As) | ≤3ppm | <3ppm | |
Heavy metals | ≤15ppm | <15ppm | |
Packing | 25kg fiber drum | ||















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