China Origin Vitamin C Ascorbic Acid Bp/USP, Find details about China Vitamin C, Vc from China Origin Vitamin C Ascorbic Acid Bp/USP
Ascorbic acid is the enolic form of 3-oxo-L- gulofuranolac-tone. It can be prepared by synthesis from glucose, or extracted from plant sources such as rose hips, blackcurrants or citrus fruits.
Ascorbic acid is easily oxidized in air. It is essential for the formation of collagen and intercellular material, bone and teeth and for healing of wounds. It helps maintain elasticity of the skin, aids the absorption of iron and improve resistance to infection. The lack of VC will cause scurvy.
Specifications: (Common VC and DC grade VC)
Analysis Contents | Analysis Standard |
Characteristics | White or almost White crystals Crystalline Powder |
Identification | Positive Reaction |
Melting Point | About 190ºC |
PH | 2.1-2.6 |
Clarity Of Solution | Clear |
Colour Of Solution | ≤BY7 |
Copper | ≤5ppm |
Heavy Metals | ≤10ppm |
Mercury | <0.1mg/kg |
Lead | <2mg/kg |
Arsenic | ≤3ppm |
Cadmium(Cd) | <1mg/kg |
Oxalic Acid | ≤0.2% |
Iron | ≤2ppm |
Loss of Drying | ≤0.4% |
Sulphate Ash(Residue On Ignition) | ≤0.1% |
Specific Optical Rotation | +20.5°-+21.5° |
Organic Volatile Impurities | Pass |
Mesh | 40-80 Mesh |
Assay | 99.0%-100.5% |
Residual Solvents | Methanol: ≤3000ppm |
Total plate count | ≤1000cfu/g |
Yeasts & molds | ≤100cfu/g |
Escherichia coli | Absence in 1g |
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