| CAS No.: | 50-81-7 |
|---|---|
| Formula: | C6h8o6 |
| EINECS: | 200-066-2 |
| Packaging Material: | Paper |
| Storage Method: | Normal |
| Shelf Life: | 36 Months |
| Samples: |
|---|
| Customization: |
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| Item | Standard |
| Appearance | White or almost white, crystalline powder or colourless crystals |
| Melting point | About 190ºC. with decomposition |
| Infrared absorption spectrum | Infrared absorption spectrum accord with the referance spectrum of ascorbic acid CRS |
| PH(With 5% water solution) | 2.1-2.6 |
| PH(With 2% water solution) | 2.4-2.8 |
| Appearance of solution | Clarity; clear; colour: ≤BY7 |
| Specific optical rotation | 20.5ºC- 21.5ºC |
| Loss on drying | ≤0.4% |
| Impurity E | ≤0.2% |
| Related substance | Impurity C: ≤0.15% |
| Impurity D: ≤0.15% | |
| Unpecified impurities:≤0.10% | |
| Total impurities:≤0.20% | |
| Copper | ≤5.0ppm |
| Iron | ≤2.0ppm |
| Arisenic | ≤3.0ppm |
| Lead | ≤2.0ppm |
| Mercury | ≤1.0ppm |
| Cadmium | ≤1.0ppm |
| Heavy metals | ≤10ppm |
| Sulphated ash | ≤0.1% |
| Assay | 99.0% ~ 100.5% |
Vitamin C is a water-soluble vitamin, chemically named L-(+) -sularate-type 2,3,4,5, 6-pentahydroxy-2-hexenoic acid-4-lactone, also known as L-ascorbic acid, molecular formula is C6H8O6, molecular weight is 176.12. [1-2]
"Vitamin C is usually a sheet, sometimes needle-shaped monoclinic crystal, odorless, acid-tasting, readily soluble in water, and highly reducing." It is involved in the complex metabolic process of the body and can promote growth and enhance resistance to disease. It can be used as a nutritional supplement, antioxidant, and also as a wheat flour amendment. However, excessive supplementation of vitamin C is not beneficial to health, but harmful, so it needs to be used rationally. "Vitamin C is used in the laboratory as an analytical reagent, such as a reducing agent, masking agent, etc."
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