The natural form of Vitamin D3 (Cholecalciferol). ComWin provides various grades of Vitamin D3 suitable for dietary supplements, food fortification, and animal feed.
Vitamin D3 is essential for calcium and phosphorus absorption, promoting healthy bones and teeth. It also plays a vital role in supporting immune system function.
| Chemical Name | Cholecalciferol |
| CAS Number | 67-97-0 |
| Molecular Formula | C27H44O |
| Molecular Weight | 384.64 |
| Molecular Structure |  |
| Packing | 25kg/drum |
| Storage | Keep sealed and protected from light. Store in a cool, dry place. |
| Application | Used as nutritional supplements or nutritional fortifiers. |
| Items | Specification | |
| Appearance | White or Almost White Crystals | |
| Solubility | Practically insoluble in water, freely soluble in cthanol (96 percent), soluble in trimethylpentane and fatty oils | |
| Identification | Meet the Requirements | |
| Specific Optical Rotation | +105.0° ~ +112.0° | |
| Assay | 97.0%~102.0% | |
| Residual Solvents | Methanol | ≤ 0.3% |
| Acetonitrile | ≤ 0.041% | |
| N-Hexane | ≤ 0.029% | |
| Ethyl Acetate | ≤ 0.5% | |
| Related Substance | A: Trans-vitamin D3 | ≤ 0.10% |
| B: Pro-vitamin D3 | ≤ 0.10% | |
| C: Lumisterol3 | ≤ 0.10% | |
| D: Iso-tachysterol3 | ≤ 0.10% | |
| E: Tachysterol3 | ≤ 0.10% | |
| Total | ≤ 1.0% | |
| Standard | EP9.0 | |
Used in softgels, tablets, and liquid drops.
Added to milk, orange juice, and margarine.
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