Complaint
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."
Product Parameters
| Items | Specification |
| Characteristics | White or almost white,Crystalline powder or colourless crystals |
| Identification | Corresponds |
| Melting Point | 189°C ~ 193°C |
| PH (5%,W/V) | 2.1-2.6 |
| PH (2%,W/V) | 2.4-2.8 |
| Specific Optical Rotation | +20.5° ~ +21.5° |
| Apperance of Solution | Clarity: Clear; Colour: ≤BY7 |
| Heavy Metals | ≤10ppm |
| Copper | ≤5 ppm |
| Iron | ≤2 ppm |
| Mercury | <1 ppm |
| Arsenic | ≤3 ppm |
| Cadmium | <1 ppm |
| Lead | <2 ppm |
| Loss of Drying | ≤0.4% |
| Sulphate Ash | ≤0.1% |
| Oxalic Acid (Impurity E) | ≤0.2% |
| Related substances | Impurity C: ≤0.15% Impurity D: ≤0.15% Unspecified impurities: ≤0.10% Total impurities: ≤0.20% |
| Residual solvents | Meets the requirements |
| Assay | 99.0%-100.5% |
| About the goods: -Health products raw materials -Nutritional supplements -Cosmetic raw materials -Plant extract -Various types of raw materials |
| About the price: Due to environmental issues and factory shutdown issues, the prices of certain raw materials may be unstable. Therefore, we need to update prices in real time. Please ask us in advance! |
| About transportation: We mainly sell raw materials, which are usually powder, liquid. So the transportation is very complicated, please carry out the transportation under our guidance. The freight will be quoted by the express company and then we will give the price to the customer. Transportation warning: Even if your goods are qualified, in any international trade.The customs inspection or confiscated for a long time. This is an inevitable risk. We deliver 100 times via FedEx, DHL or EMS, and on average, we will encounter at least 2 customs inspections. If there is a customs inspection, the only thing we can do is to cooperate with the customs. And assist customers in customs clearance with courier companies. |
