Complaint
Vitamin C is an organic compound. Vitamin C is usually flake-shaped, sometimes needle-shaped monoclinic crystals. It participates in complex metabolic processes in the body, can promote growth and enhance resistance to diseases, and can be used as nutritional supplements, Antioxidant, also used as wheat flour improver.
| Item | Standard |
| Appearance | White crystalline powder |
| Identification | Positive |
| Clarity of solution | Clear |
| Assay (%) | 99.0~100.5 |
| Loss on drying (%) | ≤ 0.40 |
| Residue on ignition (%) | ≤ 0.10 |
| Sulphate ash | ≤ 0.10 |
| Specific rotation | from +20.5 to +21.5 |
| PH value (2% solution) | 2.4 ~ 2.8 |
| PH value (5% solution) | 2.1 ~ 2.6 |
| Heavy metals | ≤3 ppm |
| Iron | ≤2 ppm |
| Copper | ≤2 ppm |
| Total plate count | ≤ 1000 cfu/g |
| Arsenic | ≤1 ppm |
| Mercury | ≤1 ppm |
| Organic volatile impurities | Meets the requirements |
| Chloride (Cl) (%) | ≤ 0.30 |
| Melting point ( ºC) | about 190 |
| Cadmium | ≤1 ppm |
| Lead | ≤2 ppm |
| Storage | in the shade |
| Packing | 25kg/bag |
Vitamin C: 25kg/box, content ≥99% Nutritional supplement; Antioxidant; Color protectant; Flour treatment agent.
