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| PH(with 5% Water Solution): | 2.1-2.6 | PH(with 2% Water Solution): | 2.4-2.8 |
|---|---|---|---|
| Melting Point: | About 190℃ | Specific Optical Rotation: | +20.5°–+21.5° |
| Oxalic Acid: | Less Than 0.2% | Iron: | Less Than 2ppm |
This Product Is a White Crystalls Or Crystal Powder, Melting Point 190 ℃ ~ 192 ℃. Odorless, Sour; The Color Is Fading Away.
Vitamin C (Also Known As L - Ascorbic Acid) Is The Ramification Of Acidic Hexose, Is Enol Hexose Acid Lactone, Vc Main Source Of Fresh Fruits And Vegetables, Is Higher Primates And a Few Other Creatures Of Essential Nutrients. Vc Has L- Type And d-Type Isomer, Only l-Type Has Physiological Function, And The Reducing And Oxidation Type Have Physiological Activity.
| Analysis Contents | Analysis Standard | Analysis Results | |||
| Characteristics | White or almost White crystals Crystalline Powder | Pass | |||
| Identification | Positive Reaction | Positive | |||
| Melting Point | About 190℃ | 190.2℃ | |||
| PH(with 2% water solution) | 2.4-2.8 | 2.51 | |||
| PH(with 5% water solution) | 2.1-2.6 | 2.38 | |||
| 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 | ≤ 2ppm | <2ppm | |||
| Arsenic | ≤3ppm | <3ppm | |||
| Oxalic Acid | ≤0.2% | <0.2% | |||
| Iron | ≤2ppm | <2ppm | |||
| Impurity E | ≤0.2% | <0.2% | |||
| Loss of Drying | ≤0.4% | <0.4% | |||
| Sulphate Ash(Residue On Ignition) | ≤0.1% | <0.1% | |||
| Specific Optical Rotation | +20.5°～+21.5° | +21.10° | |||
| Residual Solvents | Pass | Pass |
Contact Person: LEE
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