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 L (+) -Ascorbic Acid CAS 50-81-7 with Good Price
Brand Name | cspc |
Model Number | chunyu08 |
Type | Chewing Gum Bases, Colorants, Flavoring Agents, Preservatives, Sweeteners |
EINECS No. | 200-066-2 |
MF | C6h8o6 |
Other Names | Vitamin C |
CAS No. | 6100-05-6 |
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