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| Product Name: Vitamin C CAS:50-81-7 EINECS NO.:200-086-2 MF: C6H8O6 Boiling point: 552.672°C at 760 mmHg Melting point: 190-192℃ Appearance: white powder Standard: USP/BP/EP Packing:25kg/drum Items Standard Results Appearance White crystalline powder White crystalline powder Identification Positive Positive Clarity of solution Clear Clear Color of solution £BY7 <BY7 Assay 99.0~100.0% 99.9% Loss on Drying ≤0.4% 0.04% Residue on ignition £0.1% 0.03% Sulfate Ash £0.1% 0.03% Specific rotation +20.5°~ +21.5° +21.01° pH(with 2% water solution) 2.4-2.8 2.40 PH(with 5% water solution) 2.1-2.6 2.35 Melting range Heavy metals £3ppm <3ppm Iron £2ppm <2ppm Copper £5ppm <5ppm Oxalic acid £0.2% <0.2% Arsenic £1ppm <1ppm Lead £2ppm <2ppm Cadmium £1ppm <1ppm Mercury £1ppm <1ppm Organic volatile impurities Meets the requirements conform Related Substances ImpurityC≤0.15% ImpurityD≤0.15% Any Other Unspecific Impurities Impurity≤0.10% Total Impurity≤0.2% Complies Total Plate Count <1,000cfu/g <1,000cfu/g According to BP2010, E300, USP32, FCC7, EP 7. |
