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Ascorbic acid | ||||
Analysis Contents | Analysis Standard | Analysis Results | ||
Characteristics | White or almost White crystals Crystalline Powder | Pass | ||
Identification | Positive Reaction | Positive | ||
Melting Point | About 190℃ | 191.2℃ | ||
PH | 2.1-2.6 | 2.43 | ||
Clarity Of Solution | Clear | Clear | ||
Colour Of Solution | ≤BY7 | <BY7 | ||
Copper | ≤5ppm | <5ppm | ||
Heavy Metals | ≤10ppm | <10ppm | ||
Lead | <2mg/kg | <2mg/kg | ||
Arsenic | ≤3ppm | <3ppm | ||
Cadmium(Cd) | <1mg/kg | <1mg/kg | ||
Oxalic Acid | ≤0.2% | <0.2% | ||
Iron | ≤2ppm | <2ppm | ||
Loss of Drying | ≤0.4% | <0.4% | ||
Sulphate Ash(Residue On Ignition) | ≤0.1% | <0.1% | ||
Specific Optical Rotation | +20.5°–+21.5° | +21.15° | ||
Mesh | 40-80 Mesh | Pass | ||
Residual Solvents | Pass | Pass | ||
Assay | 99.0%-100.5% | 99.92% | ||








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