Quots for GMP 1000mg Vitamine C Tablet
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Our staff through experienced training. Skilled skilled knowledge, sturdy sense of provider, to satisfy the support wants of shoppers for , We adhere to the honest, efficient, practical win-win running mission and people-oriented business philosophy. Excellent quality, reasonable price and customer satisfaction are always pursued! If you are interested in our products, just try to contact us for more details!
| Appearance | White or almost white crystalline powder or colourless crystals |
| Melting point | About 190ºC |
| Specific Rotation | +20.5º~21.5º |
| PH | 2.1~2.6(in 5% solution) |
| 2.4~2.8(in 2% solution ) | |
| Residue on ignition (sulphate ash ) |
|
| Assay | 99.0%~100.5% |
| Loss on drying | ≤0.1% |
| Heavy metals | ≤10ppm |
| Lead | ≤ 2ppm |
| Mercury | ≤1ppm |
| Cadmium | ≤1ppm |
| Color of solution | ≤BY7 |
| Impurity E (oxalic acid) | ≤0.2% |
| function | Vitamin C is similar in structure to glucose. It is a polyhydroxy compound. The two adjacent enol-type hydroxyl groups in the 2nd and 3rd positions of the molecule are easily dissociated to release H+, so they have acid properties. ascorbic acid. Vitamin C has strong reducibility and is easily oxidized to dehydrogenated vitamin C, but its reaction is reversible, and ascorbic acid and dehydroascorbic acid have the same physiological functions, but dehydroascorbic acid continues to oxidize to form diketone Leuconic acid, the reaction is irreversible and completely loses physiological efficacy. |
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