CAS number: 50-81-7
Molecular formula: C6H8O6
molecular weight: 176.1241
Chemical structure:
Pharmaceutical Grade: Ascorbic acid
Food Grade: Ascorbic acid, Vitamin C sodium, Vitamin C calcium, Vitamin C DC grade
Feed Grade: Ascorbic acid, Vitamin C coated, Vitamin C phosphate 35%
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Analysis Contents | Analysis Standard | Analysis Results | |||
Characteristics | White or almost White crystals Crystalline Powder | Pass | |||
Identification | Positive Reaction | Positive | |||
Melting Point | About 190℃ | 190.7℃ | |||
PH(5% aqueous solution) | 2.1-2.6 | 2.36 | |||
Clarity Of Solution | Clear | Clear | |||
Colour Of Solution | ≤BY7 | <BY7 | |||
Copper | ≤5ppm | <5ppm | |||
Heavy Metals | ≤10ppm | <10ppm | |||
Mercury | <0.1mg/kg | <0.1mg/kg | |||
Lead | <2mg/kg | <2mg/kg | |||
Arsenic | ≤2ppm | <2ppm | |||
Oxalic Acid | ≤0.2% | <0.2% | |||
Iron | ≤2ppm | <2ppm | |||
Impurity E | ≤0.2% | <0.2% | |||
Loss on Drying | ≤0.4% | 0.03% | |||
Sulphate Ash(Residue On Ignition) | ≤0.1% | <0.1% | |||
Specific Optical Rotation | +20.5°–+21.5° | +21.16° | |||
Organic Volatile Impurities | Pass | Pass | |||
Assay | 99.0% -100.5% | 99.75% | |||
Total plate count | ≤1000cfu/g | <100cfu/g | |||
Yeasts & molds | ≤100cfu/g | <10cfu/g | |||
Conclusion: | The Above-Mentioned Product Conforms To BP2019/USP41 |